My Slim 2AA Battery Node

ahmedadelhosni

@Yveaux i remember once that i read that dirtypcbs does not allow for different designs in their panelized boards. Am i correct ?

Yveaux

@ahmedadelhosni apparently not
The board above was produced by ditypcb's. In fact they're one of the few (only?) cheap PCB manufacturers that allow panelization.

ahmedadelhosni

@Yveaux aha. I thought that this means multiple (same) design not different. Thanks

m26872

Updated first post with share stats and info.

Feature requests and example links will come asap.

Cliff Karlsson

This post is deleted!

drock1985

Just ordered my first set of boards; v2.0 in Red; can't wait to try these out!

Thanks @m26872

Matt Pitts

Hi

I've just ordered a set of the PCB boards and looking forward to putting these together mainly into reed switches and motion sensors

I have scanned the whole thread and there doesn't seem to be a comprehensive list of exactly which components are required anywhere here, well not all in one place at least.

Can I just confirm exactly what is required to build a senor node.

1 x PDB board
1 x ATMega328p 28pin PDIP
1 x NRF24L01+ radio module
1 x 4.7uF Decoupling-Capacitor for radio (I assume these are still required??)
1 x right angle pin header for connecting to program and connect batteries
1 x Length of cable ducting for housing
2 x AA batteries
Cables for connecting batteries
Battery connector
1 x senor of choice
I notice there seem to be an assortment of capacitors/regulators in most of the photos on this thread, but no definitive list of which are needed. (I am very new to all this so please excuse my ignorance)

Extras needed
1 x FTDI USB to TTL Serial Adapter

Have I missed anything of my list? Also I would be really grateful for links to some of the above components.

Sorry these are very basic noob questions, but I feel it would really helpful for people such as myself to have everything clearly listed in one place, as the main mysensors build pages do. So people know exactly what is needed.

GertSanders

@Matt-Pitts You can find a BOM for the board here:

https://www.openhardware.io/view/10/My-Slim-2AA-Battery-Node

Soloam

A nice additions would be a place to solder a ATSHA204A on board like the Sensebender! I'll try to make the change in KiCad!

meddie

@Soloam
and a flash module for OTA Sketch Uploads

Matt Pitts

Thanks @GertSanders for showing me the BOM I hadn't realised it was there, but do I need everything listed there to get it working properly?

GertSanders

@Matt-Pitts
I'm assuming that if a designer goes through the trouble of listing items on a bom, they are needed.

But you are right, that is not always the case. I'm not at my Mac (using a miniscreen now), so i can not multitask.

Tom71

Hello,
I have problems to upload the scatch to the bare Amtel. I use an USB-TTL FTL Adaper and connect, RX/TX and Reset Pin with 100n->DTR. But I got always errors on uploading.

The bootloader I have successfull burned with an raspberry pi and gpio (http://www.lxccu.com/hb-raspberry-bootloader-update

sudo bin/avrdude -Cbin/avrdude.conf -p m328p -P gpio -c gpio -U lfuse:w:0x62:m -U hfuse:w:0xde:m -U efuse:w:0x07:m -U lock:w:0x2F:m -e -Uflash:w:1443392692398-atmega328_1a.hex:i
avrdude: safemode: Fuses OK

How can I got it working?
Thank you

Thomas

bjacobse

Have you tried to upload a standard arduino bootloader?, are you using correct baud settings for uploading?

Tom71

@bjacobse No, used the bootloader from here (http://forum.mysensors.org/uploads/files/1443392692398-atmega328_1a.hex). This is an bootloader for the internal clock.
Baud settings to upload the sketch or the bootloader?

m26872

@Tom71 I think the question was if you have been successful with programming a standard bootloader to a standard Arduino board and then uploading and running a sketch?

Tom71

@m26872 Sure, but not with an bootloader (optiboot with intenal clock) on an bare Atmega. Later I will try this: http://forum.mysensors.org/uploads/files/1454449901412-7.png
I build some MySensors with an Arduino Micro, but not with only an Atmega.

Update: I don't know what's different, but this works. Perhaps I forget to connect Reset from FDL -> Pin 1.
Now I can upload simple sketches.

bjacobse

I have not had success to upload a sketch via FTDI on an Arduino ProMini using Optiboot. When I flash an ordinary bootloader (Taken from the Arduino IDE), I can easily upload a sketch via FTDI.
so that's why I recommend to flash a standard bootloader and check if you then can upload a sketch afterwards.

Tom71

@bjacobse Witch bootloader you have taken?

Matt Pitts

Hi I'm just about to start ording parts of the slim node. Looking through the thread I'm thinking based on my limited knowledge of arduino, I might be better off buying chips which already have a bootloader installed?

Can people advise, how difficult is it to upload the boot loader? Thanks

sundberg84

@Matt-Pitts - Not that hard if you read about it. Here are some good links:

bjacobse

@Tom71
well I have not yet started to use the Mysensor specific bootloader. When I use the optiboot, I upload sketch with my USBtiny (so no FTDI), and when I use FTDI for uploading sketch I used the "Arduino Pro or pro mini (3,3V, 8MHz) w/ATmega328"

Tom71

@bjacobse I thought the USBtiny is only to upload the bootloader, not the mysensors software.
I did two things:

Burn the bootloader atmega328_1a.hex to an bare Atmega328p with an Arduino as ISP
Upload an simple scetch to the Atmega with an RX/TX uploader (I used an USB to TTL with an FTDI and also an Ardunino Uno without the Atmega chip, like here http://forum.mysensors.org/uploads/files/1454449901412-7.png) Both are working.

I'm still waiting for the PCB. After receiving I want to build the motion sensor.

bjacobse

@Tom71
USBtiny is a programmer, and can both burn (upload) sketch + burn bootloader

sundberg84

Difference is that if you use a ISP programmer you will use the complete memory. You can use ISP to upload a bootloader which is required to burn a sketch with ftdi into remaining memory but its possible to use a ISP to flash a sketch without bootloader as well.

bjacobse

@Matt-Pitts
Depending of your Arduino, the USBtiny is easy to use. Maybe your Aeduino have the pinheader so then only click the cable and burn bootloader. I use Arduino Pro Mini and have an adapter ZIF socket that fits my Arduino ProMini
https://learn.adafruit.com/usbtinyisp

Tom71

@bjacobse I'm out of fucus. What was the problem? Can you burn the bootloader+sketch with an USBtiny on an bare Atmgea328p? Connected on MISO/MOSI/SCK/RESET/VCC/GND?
The Arduino Pro Mini is different from the Atmgea328p. On the arduino is an external clock.

bjacobse

@Tom71
Can you burn the bootloader+sketch with an USBtiny on an bare Atmgea328p?
I have no idea - I have never tried this.
My originally point is that I have had similar problem to upload a sketch with a FTDI on an Arduino Pro Mini that have been flashed with Optiboot, and when flashed with a "normal" bootloader I could easily upload a sketch with FTDI. I mainly use Arduino Pro Mini 3,3V 8MHz...and that have the crystals etc in place

Tom71

@bjacobse Which Optiboot loader did you exactly use? I can try it. I have an Arduino Pro Mini.

wergeld

I have ordered these. Hopefully they can get here soon-ish. All my prototyping is done and the WAF is dropping steadily with all the wires and components lying around.

One question on this - separating the individual boards from the panel: dremel tool with cuter blade fine? Or do I need to use some other method?

m26872

@wergeld I just make two small cuts from each side by a side cutter, then a gentle bend over some sharp edge like the table or a cutting board.

wergeld

@m26872 Sounds good! Current status is "at board house." Getting twitchy waiting.

drock1985

@wergeld

Just got a notification from DirtyPCB's that mine shipped - placed the order 9 days ago so give it some time. When I ordered mine, they were just re-opening from being closed for a week; I think it was Chinese new year or something.

jacikaas

Hello, I ordered it too yesterday Can't wait to step forward from my breadboards with a lot wires to PCB without wires

@m26872 Thanks for sharing it!

wergeld

@drock1985 Right. I waited until a week after Chinese new year to order. Let the hangovers end and the trainstations empty . I am looking forward to finalizing my sensor network with cases as well. I have several old plastic/wood boxes lying around waiting for a less rats-nest setup.

siod

now I finally set up my first sensor board, and, as expected, I don´t receive any data from it on my gateway :suspect:

I uploaded the sketch following the instructions from here: https://www.arduino.cc/en/Tutorial/ArduinoToBreadboard using a 16MHz Crystal.

The sketch should run, but it doesn´t. Any ideas how to troubleshoot now?

edit: I opened the serial monitor after I uploaded the sketch using the mwthod mentioned above and I get the message "radio init fail".
The same sketch works on my UNO and I have no radio problem.

Do I have to upload the sketch without the 16MHz Crystal to get it work proper?

m26872

@siod

Since external crystal isn't this designs standard, I think you should describe your hardware a bit more.
Uno fuses and bootloader?
"radio init fail" means nRF wiring issue in 99% of all cases.

siod

I just installed the NRF module at it´s desired place as well as the two capacitors and the resistors as described above. The crystal is only used for uploading the sketch to the Atmega328 chip, described here: https://www.arduino.cc/en/Tutorial/ArduinoToBreadboard
alt text

So a wiring issue should not be the problem. Also, the code should have been uploaded well, because when I put the chip back to the breadboard and fire up my Arduino I at least receive the "radio init fail" message.

I just wonder if you guys upload your sketches the same way or if you use a different setup. I know there is a way to upload the sketch without the 16MHz crystal and I would like to know if this could be the problem.

edit: I´ve re-read your first post and also this thread http://forum.mysensors.org/topic/3018/tutorial-how-to-burn-1mhz-8mhz-bootloader-using-arduino-ide-1-6-5-r5/2 ...

Do I have to burn the bootloader using 1MHz or 8 MHz? I don´t get why this makes a difference, only that the batteries would drain faster the higher the MHz rate is.

I already uploaded a bootloader on my chips with a 16MHz crystal. Could I just re-upload a new bottloader using 1 or 8 MHz and overwrite the 16MHz bootloader?

m26872

@siod The lowered MHz is not to drain battery slower. To save power we want to run wihtout buck- or boost (step-up or step-down) voltage regulators. When we do that, we need to ensure all circuit components work in whole battery voltage range. A good trade-off/design is then to make the Atmega work down to the same lower limit as the nRF24L01+, which is ~1.9V. Unfortunately the Atmega is unstable at high frequencies with low voltages. That why we need a low frequency. An external 4MHz should be low enough, but an easier, cheaper and usually good enough solution is to by the ATmega "fuse settings" activate an 8MHz internal crystal together with a "divide by 8" prescaler.
To fascilitate the use of noob-friendly Arduino IDE and concept of loading sketches and debug through a serial interface, we need to have a "bootloader" on the Atmega. The procedure you're referring to is how you put this bootloader to the ATmega. I would strongly recommend a beginner to start with ready made Arduinos in projects before starting to play with blank/bare ATmegas.
Whether you need the 16MHz crystal, 8MHz or none depends it's current fuse settings. Bootloader and fuse settings determine how you load, debug and run your sketch.
I think the guides, project threads, links and references provided here in the forum should be enough when you've come to the point where you can make it all the way.

Tom71

Did anybody tested this board with an ATSHA204A on A2? The ATSHA204A works with 2.0 to 5.5 V.

Keifru

@Tom71
I'm waiting on my PCBs/ATmegas but thats exactly something I'm wondering as well. I'm just trying to think of how the wires look in my head while waiting for everything to get delivered.

siod

ok guys, I finally set up my first sensor and it´s communicating well. I´ve attached two reed switch which work fine, only my temp snesor DHT11 doesn´t work. Are there any known issues with this sensor?

pls have a look at my setup and my code, thank you:

// Simple binary switch example 
// Connect button or door/window reed switch between 
// digitial I/O pin 3 (BUTTON1_PIN below) and GND.

#include <MySensor.h>
#include <SPI.h>

// Define Node ID
#define MY_NODE_ID 1

//Kontaktschalter
#include <Bounce2.h>
#define CHILD1_ID 1 // Kontaktschalter 1
#define CHILD2_ID 2 // Kontaktschalter 1
#define BUTTON1_PIN  5  // Kontaktschalter 1
#define BUTTON2_PIN  6  // Kontaktschalter 2

//Tempsensor
#include <DHT.h>  
#define CHILD_ID_HUM 3
#define CHILD_ID_TEMP 4
#define HUMIDITY_SENSOR_DIGITAL_PIN 4
unsigned long SLEEP_TIME = 30000; // Sleep time between reads (in milliseconds)

MySensor gw;

//Kontaktschalter
Bounce debouncer1 = Bounce(); 
Bounce debouncer2 = Bounce(); 
int oldValueReed1=-1;
int oldValueReed2=-1;

//tempsensor
DHT dht;
float lastTemp;
float lastHum;
boolean metric = true; 

//Messages
// Kontaktschalter
MyMessage msgReed1(CHILD1_ID,V_TRIPPED); // Kontaktschalter 1
MyMessage msgReed2(CHILD2_ID,V_TRIPPED); // Kontaktschalter 2

//TempMessage
MyMessage msgHum(CHILD_ID_HUM, V_HUM);
MyMessage msgTemp(CHILD_ID_TEMP, V_TEMP);

void setup()  
{  
  gw.begin(NULL, MY_NODE_ID, true);

  //Tempsensor
  dht.setup(HUMIDITY_SENSOR_DIGITAL_PIN); 

// Setup Kontaktschalter 1
  pinMode(BUTTON1_PIN,INPUT);
    // Activate internal pull-up
  digitalWrite(BUTTON1_PIN,HIGH);
// Setup Kontaktschalter 2
  pinMode(BUTTON2_PIN,INPUT);
  // Activate internal pull-up
  digitalWrite(BUTTON2_PIN,HIGH);
  
  // After setting up the button, setup debouncer
  debouncer1.attach(BUTTON1_PIN);
  debouncer2.attach(BUTTON2_PIN);
  debouncer1.interval(5);
  debouncer2.interval(5);
  
  // Register binary input sensor to gw (they will be created as child devices)
  // You can use S_DOOR, S_MOTION or S_LIGHT here depending on your usage. 
  // If S_LIGHT is used, remember to update variable type you send in. See "msg" above.
  gw.present(CHILD1_ID, S_DOOR); 
  gw.present(CHILD2_ID, S_DOOR); 
  //Tempsensor
  gw.present(CHILD_ID_HUM, S_HUM);
  gw.present(CHILD_ID_TEMP, S_TEMP); 
  metric = gw.getConfig().isMetric;
}


//  Check if digital input has changed and send in new value
void loop() 
{
  //Kontakstschalter 1
  debouncer1.update();
  // Get the update value
  int valueReed1 = debouncer1.read();
 
  if (valueReed1 != oldValueReed1) {
     // Send in the new value
     gw.send(msgReed1.set(valueReed1==HIGH ? 1 : 0));
     Serial.println("Button 1 geschaltet");
     oldValueReed1 = valueReed1;
  }
  //Kontakstschalter 2
  debouncer2.update();
  // Get the update value
  int valueReed2 = debouncer2.read();
 
  if (valueReed2 != oldValueReed2) {
     // Send in the new value
     gw.send(msgReed2.set(valueReed2==HIGH ? 1 : 0));
     Serial.println("Button 2 geschaltet");
     oldValueReed2 = valueReed2;
  }
  
 //Tempsensor

 delay(dht.getMinimumSamplingPeriod());

  float temperature = dht.getTemperature();
  if (isnan(temperature)) {
      Serial.println("Failed reading temperature from DHT");
  } else if (temperature != lastTemp) {
    lastTemp = temperature;
    if (!metric) {
      temperature = dht.toFahrenheit(temperature);
    }
    gw.send(msgTemp.set(temperature, 1));
    Serial.print("T: ");
    Serial.println(temperature);
  }
  
  float humidity = dht.getHumidity();
  if (isnan(humidity)) {
      Serial.println("Failed reading humidity from DHT");
  } else if (humidity != lastHum) {
      lastHum = humidity;
      gw.send(msgHum.set(humidity, 1));
      Serial.print("H: ");
      Serial.println(humidity);
  }

  //gw.sleep(SLEEP_TIME); //sleep a bit 

}

http://abload.de/image.php?img=20160306_11174141u66.jpg

rsachoc

@siod my understanding was that the voltage which is provided by the slim node wouldn't be suitable for the DHT11 and DHT22, as they require a minimum of 3.3v. There is some discussion here on the DHT22, which I understand has the same voltage requirements as the DHT11.

m26872

@siod I'm pretty sure DHT nor DS18B20s won't work at 1MHz.

siod

Oh man, one problem solved, next just comes up...

So what can I Do now? Just upload the 8MHz bootloader and just use 8MHz instead of 1MHz?

edit: Ok, tested it, it works with the 8MHz Bootloader!

please explain one more time if I could just use the 8MHz Bootloader, I still could not fully understand why I should use the 1 MHz Bootloader (maybe because of my bad english and also my lack of electronics knowledge). Thank you very much!!

edit2: I measured 0,02 Ampere consumption, isn´t that too much?

m26872

@siod Either your Atmega328p or you DHT22 will work unstable as your battery drain and voltage drops. I haven't tested and don't remember the specs, but my guess is that DHT will stop working very soon with battery <3V.

I suggest you choose this or this design.

siod

OK thx for the hint, I guess I will just add a third AA battery, that should solve my problem...

meddie

@siod
Attention this can damage your nrf24 Module.
Greets Eddie

siod

I really don't want to spam this thread...

But from my arduino Uno the nrf24l01 module is also powered by 5V!?!

Edit : ah ok, the arduino is going to regulate down to 3.3v... Then I cant use 3AAs

rsachoc

@siod I was in much the same position as you, but the simple suggestion is to use the SI7021, as per this thread. Otherwise, the links in the other thread are for the 5v builds.

siod

I wasn't aware that the nrf24l01 is so sensitive to voltage higher than 1.9v. I would like to have a sensor design to which I can add different sensors, just for the purpose I need it right now. So most sensors need 3.3v or 5v and I have to decide if I use 3v cells, which are more expensive or use step up / step down regulators which will drain my batteries. I just want to keep the flexibility to add any sort of sensor to my board... What would you suppose to do, also I think I am not the only one who faces those problems. Of course I am a beginner and still have a lot to learn but I also just want to finish this project as I am working on it for a very long time now...

meddie

when you are gonna to use some power up/down converter, them will need more power, so your battery will be faster empty.
If you make your circuit so simple as possible, so you can reach the longest battery time.

m26872

@siod said:

I wasn't aware that the nrf24l01 is so sensitive to voltage higher than 1.9v.

Typo? I suppose you mean 3.3V.

I would like to have a sensor design to which I can add different sensors...

Please reply why you don't like those two designs I linked to in my last post above.

GertSanders

5V as a supply voltage had been the standard for many decades.

As integrated circuits have become more compact and more efficient, 3.3V and 1.8V as supply voltages have become standards as well. 3.3V for most components, 1.8V is more recent and only used in some very highly integrated circuits.

For sensornodes based on batteries, the 3.3V standard is very usefull and most sensors are available for this working voltage.

If you really need 5V for a particular sensor, then think about AC or USB powered nodes. 5V sensors are a bad choice for battery based nodes. The 5V sensors are mostly old designs, and very inefficient when looking at them from a powerconsumption point of view.

So you can want to combine 3.3V and 5V sensors, but our experience is NOT to combine and make a choice for low power (modern) 3.3V sensors when trying to build battery based sensor nodes.

siod

OK guys, thanks for the explanation. In this case I need to buy new temp sensors...

The 3.7v batteries are no option for me because they are too expensive in my eyes. I didn't want to buy new temp sensors as I already bought a couple of the DHT 11 sensors but it seems like there is no other chance now.

I just think the next time I encounter problems is, when I try to setup a new sensor node with attached pir motion sensor... I will read the data sheet of it first and look out for power consumption

ahmedadelhosni

Is there any motion sensor that work on 3.3 V ? I tried powering the below one with 3.3 but it was acting crazy and keeps reporting motions.

http://store.fut-electronics.com/products/pir-motion-sensor-module-adjustable-range

It is written that V range is 3-5 but it worked well with 5v only.

m26872

@ahmedadelhosni Haven't you seen the motion example sensors in the first post of this thread?

ahmedadelhosni

@m26872 yeah I know you have a topic but actually was concerned with door and window sensors that time and forgot to check it again when I needed it

arnoldg

I can't program my slim node through ISP, is there a reason it isn't working.
I use USBASP with jumper 3 connected.
But it can't find the node.

someone have a clue how to solve this.

it doesn't recognise the avr.

This is the error i get:
avrdude: error: programm enable: target doesn't answer. 1
avrdude: initialization failed, rc=-1
Double check connections and try again, or use -F to override
this check.

avrdude done. Thank you.

arnoldg

When i use a ziff programming board, the avr is programmeble. so usbasp is working.

wergeld

Finally got my v2 (red) boards in. Ended up with 30 of them. Will start wiring them up this week!

arnoldg

@arnoldg said:

When i use a ziff programming board, the avr is programmeble. so usbasp is working.

This is solved, with the use of the right boards.txt file i now can burn the bootloader from within arduino.

arnoldg

Below is my first sketch with this awsome 2aa battery powerd board.
i didn't measure the current. but i tryed to be as efficient with the power as possible.

my avr is running on 8Mhz, this is becaus the DTH22 doesn't run on 1Mhz.

#include <SPI.h>
#include <MySensor.h>  
#include <DHT.h>  
#include <Vcc.h>


#define CHILD_ID_TEMP 1               // Child id for temperatur
#define CHILD_ID_HUM 2                // Child id for humidity
#define CHILD_ID_VOLT 3               // Child id for battery reading

#define HUMIDITY_SENSOR_DIGITAL_PIN 3 // Where is my DHT22 data pin connected to

int node_id=6;                        // What is my node id

unsigned long SLEEP_TIME =30000UL;    // Sleep time between reads (in milliseconds)
int sleepcycle=1;                     // Counter to count the amout of time not sending data
int humoffset=2;                      // only data is send if humidity is changed for this amout
int tempoffset=0.5;                   // only data is if temperature is changed for this amout 
int gwsendtimout=20;                  // each 20*sleep_time (10 minutes) data will be send

const float VccMin   = 1.5;           // Minimum expected Vcc level, in Volts.
const float VccMax   = 3.0;           // Maximum expected Vcc level, in Volts.
const float VccCorrection = 1.0/1.0;  // Measured Vcc by multimeter divided by reported Vcc

Vcc vcc(VccCorrection);

MySensor gw;
DHT dht;
//Store last values
float lastTemp = 0 ;                  
float lastHum = 0 ;
float batteryV=0;
int oldBatteryPcnt = 0;             

boolean lastTripped = false ;
boolean metric = true; 

boolean gwsend = true;              // to determin if data has to be send

MyMessage msgHum(CHILD_ID_HUM, V_HUM);
MyMessage msgTemp(CHILD_ID_TEMP, V_TEMP);
MyMessage msgVolt(CHILD_ID_VOLT, V_VOLTAGE);

void setup()  
{ 
  gw.begin(NULL,node_id,false);
  dht.setup(HUMIDITY_SENSOR_DIGITAL_PIN); 

  // Send the Sketch Version Information to the Gateway
  gw.sendSketchInfo("Humidity", "1.1",true);


 
  // Register all sensors to gw (they will be created as child devices)
  gw.present(CHILD_ID_HUM, S_HUM,"Humidity douche");
  gw.present(CHILD_ID_TEMP, S_TEMP,"Temperatuur douche");
  gw.present(CHILD_ID_VOLT, S_MULTIMETER,"Battery voltage");
   
  metric = gw.getConfig().isMetric;
}

void loop()      

{  
  // get the battery Voltage
   batteryV  = vcc.Read_Volts();
   int batteryPcnt = vcc.Read_Perc(VccMin, VccMax);

   if (oldBatteryPcnt != batteryPcnt) {
     // Power up radio after sleep
     gwsend=true;
     oldBatteryPcnt = batteryPcnt;
   }
    
  delay(dht.getMinimumSamplingPeriod());

  float temp1 = dht.getTemperature();
  float humidity = dht.getHumidity();

  if (isnan(temp1)) {
//      Serial.println("Failed reading temperature from DHT");
  } else if ((temp1 <= lastTemp-tempoffset)||(temp1 >= lastTemp+tempoffset)) {
    lastTemp = temp1;
    if (!metric) {
      temp1 = dht.toFahrenheit(temp1);
    }
    gwsend=true;
  }

  if (isnan(humidity)) {
    //      Serial.println("Failed reading humidity from DHT");
  } else if ((humidity <= lastHum-humoffset)||(humidity >= lastHum+humoffset)) {
      lastHum = humidity;
      gwsend=true;
    }

  if (sleepcycle>gwsendtimout){
    gwsend=true;
   }

if (gwsend){     
    gw.sendBatteryLevel(oldBatteryPcnt);
    gw.send(msgVolt.set(batteryV, 1));
    gw.send(msgTemp.set(lastTemp, 1));  
    gw.send(msgHum.set(lastHum, 1));
    gwsend=false;
    sleepcycle=1;
  }
  sleepcycle++;  
  gw.sleep(SLEEP_TIME);
}

wergeld

Finally had time to solder it. Not my best job, I admit. One of the caps I tried to mount was not flush enough so I had to clip it off. Hopefully not a critical component! I made the radio removable using some header strips. Now to figure out what temp sensor to use. I have currently used just a thermister. Can DHT22 work down at ~1.9V?

Anyway this was fun - highly recommend a needle point solder tip!

AWI

@wergeld congratulations
For the temp sensor I suggest a si7021 board. Almost the same price as as dht22 but more accurate, reliable and versatile. It uses the I2C bus (pin A4, A5)

wergeld

@AWI said:

@wergeld congratulations
For the temp sensor I suggest a si7021 board. Almost the same price as as dht22 but more accurate, reliable and versatile. It uses the I2C bus (pin A4, A5)

@AWI I saw the si7021 on another forum. Ordered a couple of the low voltage ones as I want to make my nodes with as few components as possible. I could still use my thermistor while I wait. This is a fun build!

Soloam

Hello, I made a small modification to this project, hope that is ok! Now I need some help validating it! I opened a new topic to avoid going side topic in this one:

http://forum.mysensors.org/topic/3642/m26872-slim-node-mod

Thank you all

m26872

@Soloam I'm happy that you've picked up the design. That's what this openhardware is all about. Also very good that you made a new topic! So, let's continue there. I'll follow.

rollercontainer

I ordered a proto pack on 15th of April and received it on 30th of April. Pretty fast, I think.

rollercontainer

Hm, I built some nodes and messured the current with a Fluke 179: 15mA even with a minimal sketch with sleeping enabled. AVRs are not from china, but the NRF24 are. So, is the radio the problem?

Greetings

rollercontainer

(i am using MySensors 2.0.0beta)

m26872

Could be radio, but who knows? What troubleshooting steps have you taken? Hw-, sw-variations etc. Please post your sketch. Perhaps are there any SlimNode users with working MyS 2.0.0 beta that can share some info.

GertSanders

@m26872
I have had a bad radio which would not go to sleep and consumed around that amount all the time (also when I used SLEEP in the 2.0 library).

Switching the radio to another one fixed it. All my radio's are from China, so they are normally OK. But you can get bad ones once in a while. Given the low cost I do not care and swap them when needed.

rollercontainer

Ok, where to buy NRF24's which are genuine for sure and not too expensive in europe?

GertSanders

@rollercontainer
No idea, I'm quite happy with the radio's from China (1 bad one on 25 pcs so far).

rollercontainer

Thx, Gert. Are you using 1.5 or 2.0.0beta?

GertSanders

@rollercontainer
I use the 2.0 beta

rollercontainer

Bought another 2 radios from different dealers. The one with the blob on the die is going down to 2mA, but isnt working at all (node does not come up). The next one is working, but again 15mA. This is frustrating. Anyone here with a good source for radio modules?

Even with a stripped down sketch without any sensors with only delay and sleep in the loop, the current stays the same.

GertSanders

@rollercontainer
I get my radio's from an Aliexpress store called AAA+ (or something with a lot of A's in the name).

Bobcat

@26872, It's my first post here and I had to register so that I could give you my regards for your work and for sharing it with us! Just ordered a batch of your v2 boards.

I have similar design sensors running on proto-pcbs, but your ready-made pcb makes everything much more convenient.

Just had a question on stability of running regular Arduino 8mhz internal clock bootloader for prolonged time. Anyone tried this and had success running the 328 down to 2v (or so) @ 8mhz? If this is a doomed idea, I will have to attach the boost circuit to this design, but it would be nice to avoid all that parasite current consumption.

GertSanders

@Bobcat
I have had an atmega328 run down to 1V6 at 8Mhz before failing completely, so working down to 2V should be OK. The nrf24 will likely stop around that point as well (lower limit is 1V9 for that chip).

Bobcat

@GertSanders
Thank you for the reply! Was the atmega doing some clock critical tasks when it went below 2v? I am thinking to attach BME280 (Pressure/Temp/Hum) which also operates in the same voltage range, but not sure if the I2C will be working properly when atmega goes overclocked.

GertSanders

@Bobcat
The nice thing about I2C is that the clock is generated by the atmega328 (the master), so even if this clock slows down due to low voltage (this happens a little when using the internal oscillator), the I2C devices on that bus just follow.
We can also use SI7021 (temperature and humidity sensor) at these low voltages for the same reason.

badmannen

Hello all

I´m Henrik, first post here and sort of beginner at this ( use to do some embedded stuff some 15 years ago and picked it up again recently )

I just did a shopping list for this project, Version 2.0 if I got it correct
here it is: http://my.aliexpress.com/wishlist/shared.htm?groupId=3106453469
As an example it should be about 20 euros if you buy to be able to make 5 whole sets.

I added 3 additional and optional things to the original BOM:
battery holder + battery connector to make it easier to change them ( I think )
straight pins

I did this for people searching for the components needed that does not have any or very few before starting the project.

Only thing extra needed I think would be some additional cable and a arduino UNO or some other way to program the single chips. But I assume you already have a UNO if you read this
And a soldering iron and that stuff.

(if even one person found this useful I guess it fulfilled its purpose)

//Henrik

badmannen

can someone tell me if I can find Version 2 on the new site: http://dangerousprototypes.com/store/pcbs
?

I never ordered any pcb´s like this before so I don´t want to get it wrong =D.
If the models are not there to choose from unlike the old website, what file do I need to upload to have them print the board?

thanks for any help

hek

@badmannen

@m26872 has prepared for ordering this board directly on openhardware.io. Easy and you give something back to him.

hugows

Received mine from DirtyPCBs - I just wanted to test the whole system. I guess my first question is: how do you guys break them apart? Since tthey come in 3-circuits-per-board with little holes.
I don't want to ruin them!

m26872

@hugows
https://forum.mysensors.org/topic/2067/my-slim-2aa-battery-node/273

hugows

Thanks, it worked!
Sorry that I couldn't find the post you linked..

alt text

hugows

Are there any guides on how to assemble the 2.0 version?
How should I, as I beginner, find this out?
I know about the schematics and the BOM, but, for example, I could only find R1, C1, C2 and C3 marked. The schematics shows C4 and C5, just an example - how do I find where those go?

Thanks in advance,
hugo

thazlett144

@hugows C4 goes over the ground and VCC of the NRF radio. I'm not sure about but C5, from some pictures I have seen I think it goes in the same place as C4 but I may be wrong. I have left that out without an issue.

OP - this board is great! it take the pain out of soldering the radio to a pro mini / nano. I really like these.

hugows

@thazlett144 Thanks. like this then?

alt text

One more thing: can I mount R1, C1, C2, C3 on the bottom side? My "height requirements" aren't as strict, since my cable duct is almost 2cm tall.

--

To check, I will be soldering this 8 components in this order:

R1
C1
C2
C3
C4 electrolitic (then bend it)
Atmega socket
NRF24 radio
6 pin angled connector

thazlett144

C4 in your picture looks correct to me. You could put C4 up on the edge under where the radio would be as well. You have VCC up on the edge. I think the pins adjacent to that are ground too. EDIT: I think I replied before you edited your picture

You can solder the components underneath if you need to yes. I don't see why that would be an issue.

m26872

I'll add the C4 and C5 ref-silk to the list of requests for improvements.

hugows

@m26872 C5 would be in paralllel to C4, right?
Also, those are the capacitors for improving the radio transmission, correct?

Thanks for this awesome board, @m26872!

m26872

@hugows Yes, C4 is the standard recommended cap on the radio module supply and should be between Vcc and Gnd as near the radio as possible. The chinese clones are known to be very supply noise sensitive. C5 is of low ESR type and there to further increase the filtering. In theory it should be even closer than C4.

A battery supply is stable by nature and you should probably stay fine without some of the caps in other cases as well. The design is intended to provide flexibility and margin in general. It's easy to throw in a few extra parts and then maybe avoid some troubleshooting.

siod

I've set up two sensors with 2 reed switches and 1 HTU21D attached. When I was testing them around 60 cm away from my gateway they worked very fine. Now I moved them to their final destination which is around 8-10 meters away from the gateway and now they don't reach the gateway anymore. Any idea what could cause this? Any way to increase the range?

wergeld

@siod
Is there any obstruction between the nodes and the gateway? Trees, walls, etc? Depending on what is in between the radios you can dramatically lose signal.

siod

each one goes around a corner and so one wall is partly between the nodes and the gateway and it´s not even concrete. I have one node in my basement attached to an arduino nano and I have no range problems...

The batteries are all fully loaded.

edit:
I would like to post my Node sketch as well as my gateway sketch and MyConfig.h. Maybe there is some optimization potential:

Node sktech:

// Sensor Node Schlafzimmer mit HTU21D Temp/Hum Sensor, Fensterkontakte an Interrupt PINS Digital 5&6. Sleep Time 15 Minutwn, wake up wenn Fenster geöffnet/geschlossen wird.
#define MY_RADIO_NRF24 //MySensor Library auf NRF24 Funkmodul einstellen, muss vor MySensor.h Initialisierung geschehen
// Define Node ID
#define MY_NODE_ID 4

//Batterysensor
int BATTERY_SENSE_PIN = A0;  // select the input pin for the battery sense point
int oldBatteryPcnt = 0;
#define CHILD_ID_BATT 7

//Kontaktschalter
//#include <Bounce2.h>
#define CHILD1_ID 1 // Kontaktschalter 1
#define CHILD2_ID 2 // Kontaktschalter 2
#define BUTTON1_PIN  2  // Kontaktschalter 1
#define BUTTON2_PIN  3  // Kontaktschalter 2
int oldValueReed1=-1;
int oldValueReed2=-1;

//Tempsensor
#include <SparkFunHTU21D.h>
#include <Wire.h>
#define CHILD_ID_HUM 3
#define CHILD_ID_TEMP 4
unsigned long SLEEP_TIME = 900000; // Sleep time between reads (in milliseconds)

#include <MySensors.h>
#include <SPI.h>

//tempsensor
HTU21D myHumidity;
float lastTemp;
float lastHum;
//boolean metric = true; 

//Messages
//Battery
MyMessage msgbatt(CHILD_ID_BATT,V_VOLTAGE);
// Kontaktschalter
MyMessage msgReed1(CHILD1_ID,V_TRIPPED); // Kontaktschalter 1
MyMessage msgReed2(CHILD2_ID,V_TRIPPED); // Kontaktschalter 2
//TempMessage
MyMessage msgHum(CHILD_ID_HUM, V_HUM);
MyMessage msgTemp(CHILD_ID_TEMP, V_TEMP);

//Presentation; present sensors to gateway!
void presentation(){
  // Send the sketch version information to the gateway and Controller
  sendSketchInfo("Küche Messstation", "2.0", true);
    
  // Register binary input sensor to gw (they will be created as child devices)
  // You can use S_DOOR, S_MOTION or S_LIGHT here depending on your usage. 
  // If S_LIGHT is used, remember to update variable type you send in. See "msg" above.
  present(CHILD1_ID, S_DOOR); 
  present(CHILD2_ID, S_DOOR); 
    
  //Tempsensor
  present(CHILD_ID_HUM, S_HUM);
  present(CHILD_ID_TEMP, S_TEMP); 
  //metric = getConfig().isMetric;

  //Battery
  present(CHILD_ID_BATT,V_VOLTAGE);
}

//Setup
void setup()  
{  
  //Serial.begin(9600);
  Serial.println("Hello!");
  //Batterysensor
     // use the 1.1 V internal reference
#if defined(__AVR_ATmega2560__)
   analogReference(INTERNAL1V1);
#else
   analogReference(INTERNAL);
#endif

//Tempsensor
  Serial.println("Setting up TempSensor...");
  myHumidity.begin();
  Serial.println("...done!");

// Setup Kontaktschalter 1
  pinMode(BUTTON1_PIN,INPUT);
    // Activate internal pull-up
  digitalWrite(BUTTON1_PIN,HIGH);
// Setup Kontaktschalter 2
  pinMode(BUTTON2_PIN,INPUT);
  // Activate internal pull-up
  digitalWrite(BUTTON2_PIN,HIGH);
}

//Starte den Loop
void loop() 
{
  //Batterysensor
  // get the battery Voltage
  delay(1000);
   int sensorValue = analogRead(BATTERY_SENSE_PIN);
   #ifdef DEBUG
   #endif
   
   // 1M, 470K divider across battery and using internal ADC ref of 1.1V
   // Sense point is bypassed with 0.1 uF cap to reduce noise at that point
   // ((1e6+470e3)/470e3)*1.1 = Vmax = 3.44 Volts
   // 3.44/1023 = Volts per bit = 0.003363075
   float batteryV  = sensorValue * 0.003363075;
   int batteryPcnt = sensorValue / 10;

   #ifdef DEBUG
   Serial.print("Battery Voltage: ");
   Serial.print(batteryV);
   Serial.println(" V");

   Serial.print("Battery percent: ");
   Serial.print(batteryPcnt);
   Serial.println(" %");
   #endif

   if (oldBatteryPcnt != batteryPcnt) {
     // Power up radio after sleep
     sendBatteryLevel(batteryPcnt,true);
     send(msgbatt.set(batteryPcnt),true);
     oldBatteryPcnt = batteryPcnt;
   }
   
  //Kontakstschalter 1
   // Short delay to allow buttons to properly settle
  sleep(10);
  // Get the update value
  int valueReed1 = digitalRead(BUTTON1_PIN);
 
  if (valueReed1 != oldValueReed1) {
     // Send in the new value
     send(msgReed1.set(valueReed1==HIGH ? 1 : 0),true);
     Serial.println("Button 1 geschaltet");
     oldValueReed1 = valueReed1;
  }
  //Kontakstschalter 2
  // Get the update value
  int valueReed2 = digitalRead(BUTTON2_PIN);
 
  if (valueReed2 != oldValueReed2) {
     // Send in the new value
     send(msgReed2.set(valueReed2==HIGH ? 1 : 0),true);
     Serial.println("Button 2 geschaltet");
     oldValueReed2 = valueReed2;
  }
 
 //Tempsensor
Serial.println("Starte Messung...");
  
    float temp = myHumidity.readTemperature();

  if (isnan(temp)) {
      Serial.println("Failed reading temperature from DHT");
  } else if (temp != lastTemp) {
    lastTemp = temp;
    send(msgTemp.set(temp, 1),true);
    Serial.print("T: ");
    Serial.println(temp);
  }
  
 float humd = myHumidity.readHumidity();
  if (isnan(humd)) {
      Serial.println("Failed reading humidity from DHT");
  } else if (humd != lastHum) {
      lastHum = humd;
      send(msgHum.set(humd, 1),true);
      Serial.print("H: ");
      Serial.println(humd);
  }

 Serial.println("Sleep...");
 sleep(BUTTON1_PIN - 2, CHANGE, BUTTON2_PIN - 2, CHANGE, SLEEP_TIME); //sleep a bit 
  
}

Gateway sketch:

#include <SPI.h>

// Enable debug prints to serial monitor
#define MY_DEBUG 

// Enables and select radio type (if attached)
#define MY_RADIO_NRF24
//#define MY_RADIO_RFM69

#define MY_GATEWAY_MQTT_CLIENT

// Set this nodes subscripe and publish topic prefix
#define MY_MQTT_PUBLISH_TOPIC_PREFIX "mygateway1-out"
#define MY_MQTT_SUBSCRIBE_TOPIC_PREFIX "mygateway1-in"

// Set MQTT client id
#define MY_MQTT_CLIENT_ID "mysensors-1"

// W5100 Ethernet module SPI enable (optional if using a shield/module that manages SPI_EN signal)
//#define MY_W5100_SPI_EN 4  

// Enable Soft SPI for NRF radio (note different radio wiring is required)
// The W5100 ethernet module seems to have a hard time co-operate with 
// radio on the same spi bus.
#if !defined(MY_W5100_SPI_EN) && !defined(ARDUINO_ARCH_SAMD)
  #define MY_SOFTSPI
  #define MY_SOFT_SPI_SCK_PIN 14
  #define MY_SOFT_SPI_MISO_PIN 16
  #define MY_SOFT_SPI_MOSI_PIN 15
#endif  

// When W5100 is connected we have to move CE/CSN pins for NRF radio
#ifndef MY_RF24_CE_PIN 
  #define MY_RF24_CE_PIN 5
#endif
#ifndef MY_RF24_CS_PIN 
  #define MY_RF24_CS_PIN 6
#endif

// Enable these if your MQTT broker requires usenrame/password
//#define MY_MQTT_USER "username"
//#define MY_MQTT_PASSWORD "password"

// Enable MY_IP_ADDRESS here if you want a static ip address (no DHCP)
#define MY_IP_ADDRESS 192,168,1,51

// If using static ip you need to define Gateway and Subnet address as well
#define MY_IP_GATEWAY_ADDRESS 192,168,1,1
#define MY_IP_SUBNET_ADDRESS 255,255,255,0

// MQTT broker ip address or url. Define one or the other. 
//#define MY_CONTROLLER_URL_ADDRESS "m20.cloudmqtt.com"
#define MY_CONTROLLER_IP_ADDRESS 192, 168, 1, 50

// The MQTT broker port to to open 
#define MY_PORT 1883      

 /*
// Flash leds on rx/tx/err
#define MY_LEDS_BLINKING_FEATURE
// Set blinking period
#define MY_DEFAULT_LED_BLINK_PERIOD 300

// Enable inclusion mode
#define MY_INCLUSION_MODE_FEATURE
// Enable Inclusion mode button on gateway
#define MY_INCLUSION_BUTTON_FEATURE
// Set inclusion mode duration (in seconds)
#define MY_INCLUSION_MODE_DURATION 60 
// Digital pin used for inclusion mode button
#define MY_INCLUSION_MODE_BUTTON_PIN  3 

// Uncomment to override default HW configurations
//#define MY_DEFAULT_ERR_LED_PIN 16  // Error led pin
//#define MY_DEFAULT_RX_LED_PIN  16  // Receive led pin
//#define MY_DEFAULT_TX_LED_PIN  16  // the PCB, on board LED
*/

#include <Ethernet.h>
#include <MySensors.h>

void setup() { 
}

void presentation() {
  // Present locally attached sensors here    
}


void loop() {
  // Send locally attech sensors data here
}

MyConfig.h

/*
 * The MySensors Arduino library handles the wireless radio link and protocol
 * between your home built sensors/actuators and HA controller of choice.
 * The sensors forms a self healing radio network with optional repeaters. Each
 * repeater and gateway builds a routing tables in EEPROM which keeps track of the
 * network topology allowing messages to be routed to nodes.
 *
 * Created by Henrik Ekblad <henrik.ekblad@mysensors.org>
 * Copyright (C) 2013-2015 Sensnology AB
 * Full contributor list: https://github.com/mysensors/Arduino/graphs/contributors
 *
 * Documentation: http://www.mysensors.org
 * Support Forum: http://forum.mysensors.org
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * version 2 as published by the Free Software Foundation.
 */

/**
 * @file MyConfig.h
 *
 * MySensors specific configurations
 */
#ifndef MyConfig_h
#define MyConfig_h
#include <stdint.h>


/**********************************
*  Serial and debug options
***********************************/

// Enable MY_DEBUG in sketch to show debug prints. This option will add a lot to the size of the
// final sketch but is helpful to see what is actually is happening during development
//#define MY_DEBUG

// Enable MY_SPECIAL_DEBUG in sketch to activate I_DEBUG messages if MY_DEBUG is disabled.
// I_DEBUG requests are:
// R: routing info (only repeaters): received msg XXYY (as stream), where XX is the node and YY the routing node
// V: CPU voltage
// F: CPU frequency
// M: free memory
// E: clear MySensors EEPROM area and reboot (i.e. "factory" reset)
//#define MY_SPECIAL_DEBUG

// Enable MY_DEBUG_VERBOSE_SIGNING flag for verbose debug prints related to signing.
// Requires DEBUG to be enabled.
// This will add even more to the size of the final sketch!
//#define MY_DEBUG_VERBOSE_SIGNING

// Enable this in sketch if you want to use TX(1), RX(0) as normal I/O pin
//#define MY_DISABLED_SERIAL

// Enable MY_CORE_ONLY flag if you want to use core functions without loading the framework
//#define MY_CORE_ONLY

// Turn off debug if serial pins is used for other stuff
#ifdef MY_DISABLED_SERIAL
#undef MY_DEBUG
#endif

/**
 * @def MY_BAUD_RATE
 * @brief Serial output baud rate (debug prints and serial gateway speed).
 */
#ifndef MY_BAUD_RATE
#define MY_BAUD_RATE 115200
#endif

// Disables over-the-air reset of node
//#define MY_DISABLE_REMOTE_RESET

/**********************************
*  Radio selection and node config
***********************************/

// Selecting uplink transport layer is optional (for a gateway node).

//#define MY_RADIO_NRF24
//#define MY_RADIO_RFM69
//#define MY_RS485

/**
* @def MY_TRANSPORT_SANITY_CHECK
* @brief If enabled, node will check transport in regular intervals to detect HW issues and re-initialize in case of failure. This feature is enabled for all repeater nodes (incl. GW)
*/
//#define MY_TRANSPORT_SANITY_CHECK
/**
* @def MY_TRANSPORT_SANITY_CHECK_INTERVAL
* @brief Interval (in ms) of transport sanity checks
*/
#ifndef MY_TRANSPORT_SANITY_CHECK_INTERVAL
#define MY_TRANSPORT_SANITY_CHECK_INTERVAL ((uint32_t)60000)
#endif
/**
 * @def MY_REGISTRATION_FEATURE
 * @brief If enabled, node has to register to gateway/controller before allowed to send sensor data.
 */
#define MY_REGISTRATION_FEATURE

 /**
 * @def MY_REGISTRATION_RETRIES
 * @brief Number of registration retries if no reply received from GW/controller
 */

#ifndef MY_REGISTRATION_RETRIES
#define MY_REGISTRATION_RETRIES 3
#endif

 /**
 * @def MY_REGISTRATION_DEFAULT
 * @brief Node registration default - this applies if no registration response is recieved from controller
 */

#define MY_REGISTRATION_DEFAULT true

 /**
 * @def MY_REGISTRATION_CONTROLLER
 * @brief If enabled, node registration request has to be handled by controller
 */
 // #define MY_REGISTRATION_CONTROLLER

 /**
 * @def MY_CORE_COMPATIBILITY_CHECK
 * @brief If enabled, library compatibility is checked during node registration. Incompatible libraries are unable to send sensor data.
 */
#define MY_CORE_COMPATIBILITY_CHECK

/**
 * @def MY_NODE_ID
 * @brief Node id defaults to AUTO (tries to fetch id from controller).
 */
#ifndef MY_NODE_ID
#define MY_NODE_ID AUTO
#endif

/**
 * @def MY_PARENT_NODE_ID
 * @brief Node parent defaults to AUTO (tries to find a parent automatically).
 */
#ifndef MY_PARENT_NODE_ID
#define MY_PARENT_NODE_ID AUTO
#endif

/**
 * @def MY_PARENT_NODE_IS_STATIC
 * @brief Enable MY_PARENT_NODE_IS_STATIC to disable fall back if parent node fails
 */
//#define MY_PARENT_NODE_IS_STATIC

// Enables repeater functionality (relays messages from other nodes)
// #define MY_REPEATER_FEATURE

/**
 * @def MY_SMART_SLEEP_WAIT_DURATION
 * @brief The wait period before going to sleep when using smartSleep-functions.
 *
 * This period has to be long enough for controller to be able to send out
 * potential buffered messages.
 */
#ifndef MY_SMART_SLEEP_WAIT_DURATION
#define MY_SMART_SLEEP_WAIT_DURATION 500
#endif

/**********************************
*  Over the air firmware updates
***********************************/

// Enable MY_OTA_FIRMWARE_FEATURE in sketch to allow safe over-the-air firmware updates.
// This feature requires external flash and the DualOptiBoot boot-loader.
// Note: You can still have OTA FW updates without external flash but it
// requires the MYSBootloader and disabled MY_OTA_FIRMWARE_FEATURE
//#define MY_OTA_FIRMWARE_FEATURE

/**
 * @def MY_OTA_FLASH_SS
 * @brief Slave select pin for external flash.
 */
#ifndef MY_OTA_FLASH_SS
#define MY_OTA_FLASH_SS 8
#endif

/**
 * @def MY_OTA_FLASH_JDECID
 * @brief Flash jdecid.
 */
#ifndef MY_OTA_FLASH_JDECID
#define MY_OTA_FLASH_JDECID 0x1F65
#endif


/**********************************
*  Gateway config
***********************************/

/**
 * @def MY_GATEWAY_MAX_RECEIVE_LENGTH
 * @brief Max buffersize needed for messages coming from controller.
 */
#ifndef MY_GATEWAY_MAX_RECEIVE_LENGTH
#define MY_GATEWAY_MAX_RECEIVE_LENGTH 100
#endif

/**
 * @def MY_GATEWAY_MAX_SEND_LENGTH
 * @brief Max buffer size when sending messages.
 */
#ifndef MY_GATEWAY_MAX_SEND_LENGTH
#define MY_GATEWAY_MAX_SEND_LENGTH 120
#endif

/**
 * @def MY_GATEWAY_MAX_CLIENTS
 * @brief Max number of parallel clients (sever mode).
 */
#ifndef MY_GATEWAY_MAX_CLIENTS
#define MY_GATEWAY_MAX_CLIENTS 1
#endif



/**********************************
*  Information LEDs blinking
***********************************/
// This feature enables LEDs blinking on message receive, transmit
// or if some error occurred. This was commonly used only in gateways,
// but now can be used in any sensor node. Also the LEDs can now be
// disabled in the gateway.

#define MY_LEDS_BLINKING_FEATURE

// The following setting allows you to inverse the blinking feature MY_LEDS_BLINKING_FEATURE
// When MY_WITH_LEDS_BLINKING_INVERSE is enabled LEDSs are normally turned on and switches
// off when blinking

//#define MY_WITH_LEDS_BLINKING_INVERSE

// The following defines can be used to set the port pin, that the LED is connected to
// If one of the following is defined here, or in the sketch, MY_LEDS_BLINKING_FEATURE will be
// enabled by default. (Replace x with the pin number you have the LED on)
//#define MY_DEFAULT_ERR_LED_PIN x
//#define MY_DEFAULT_TX_LED_PIN x
//#define MY_DEFAULT_RX_LED_PIN x

/**********************************************
*  Gateway inclusion button/mode configuration
**********************************************/
// Enabled inclusion mode feature
//#define MY_INCLUSION_MODE_FEATURE

// Enables inclusion-mode button feature on the gateway device
//#define MY_INCLUSION_BUTTON_FEATURE

// Disable inclusion mode button if inclusion mode feature is not enabled
#ifndef MY_INCLUSION_MODE_FEATURE
#undef MY_INCLUSION_BUTTON_FEATURE
#endif

/**
 * @def MY_INCLUSION_MODE_BUTTON_PIN
 * @brief The default input pin used for the inclusion mode button.
 */
#ifndef MY_INCLUSION_MODE_BUTTON_PIN
	#if defined(ARDUINO_ARCH_ESP8266)
		#define MY_INCLUSION_MODE_BUTTON_PIN 5
	#else
		#define MY_INCLUSION_MODE_BUTTON_PIN 3
	#endif
#endif

/**
 * @def MY_INCLUSION_MODE_DURATION
 * @brief Number of seconds (default one minute) inclusion mode should be enabled.
 */

#ifndef MY_INCLUSION_MODE_DURATION
#define MY_INCLUSION_MODE_DURATION 60
#endif

/**
 * @def MY_INCLUSION_BUTTON_PRESSED
 * @brief The logical level indicating a pressed inclusion mode button.
 */
#if defined(MY_INCLUSION_BUTTON_EXTERNAL_PULLUP)
#define MY_INCLUSION_BUTTON_PRESSED HIGH
#else
#define MY_INCLUSION_BUTTON_PRESSED LOW
#endif

/**********************************
*  Message Signing Settings
***********************************/
/**
 * @def MY_SIGNING_ATSHA204
 * @brief Enables HW backed signing functionality in library.
 *
 * For any signing related functionality to be included, this define or @ref MY_SIGNING_SOFT has to be enabled.
 */
//#define MY_SIGNING_ATSHA204

/**
 * @def MY_SIGNING_SOFT
 * @brief Enables SW backed signing functionality in library.
 *
 * For any signing related functionality to be included, this define or @ref MY_SIGNING_ATSHA204 has to be enabled.
 */
//#define MY_SIGNING_SOFT

/**
 * @def MY_SIGNING_REQUEST_SIGNATURES
 * @brief Enable this to inform gateway to sign all messages sent to this node.
 *
 * If used for a gateway, gateway will only request signatures from nodes that in turn
 * request signatures from gateway.
 */
//#define MY_SIGNING_REQUEST_SIGNATURES

/**
 * @def MY_VERIFICATION_TIMEOUT_MS
 * @brief Define a suitable timeout for a signature verification session
 *
 * Consider the turnaround from a nonce being generated to a signed message being received
 * which might vary, especially in networks with many hops. 5s ought to be enough for anyone.
 */
#ifndef MY_VERIFICATION_TIMEOUT_MS
#define MY_VERIFICATION_TIMEOUT_MS 5000
#endif

/**
 * @def MY_SIGNING_NODE_WHITELISTING
 * @brief Enable to turn on whitelisting
 *
 * When enabled, a signing node will salt the signature with it's unique signature and nodeId.<br>
 * The verifying node will look up the sender in a local table of trusted nodes and
 * do the corresponding salting in order to verify the signature.<br>
 * For this reason, if whitelisting is enabled on one of the nodes in a sign-verify pair, both
 * nodes have to implement whitelisting for this to work.<br>
 * Note that a node can still transmit a non-salted message (i.e. have whitelisting disabled)
 * to a node that has whitelisting enabled (assuming the receiver does not have a matching entry
 * for the sender in it's whitelist). The whitelist to use is defined as the value of the flag.
 */
//#define MY_SIGNING_NODE_WHITELISTING {{.nodeId = GATEWAY_ADDRESS,.serial = {0x09,0x08,0x07,0x06,0x05,0x04,0x03,0x02,0x01}}}

/**
 * @def MY_SIGNING_ATSHA204_PIN
 * @brief Atsha204 default pin setting
 *
 * Pin where ATSHA204 is attached
 */
#ifndef MY_SIGNING_ATSHA204_PIN
#define MY_SIGNING_ATSHA204_PIN 17
#endif

/**
 * @def MY_SIGNING_SOFT_RANDOMSEED_PIN
 * @brief Pin used for random generation in soft signing
 *
 * Do not connect anything to this when soft signing is enabled
 */
#ifndef MY_SIGNING_SOFT_RANDOMSEED_PIN
#define MY_SIGNING_SOFT_RANDOMSEED_PIN 7
#endif

/**********************************
*  RS485 Driver Defaults
***********************************/

/**
 * @def MY_RS485_BAUD_RATE
 * @brief The RS485 BAUD rate.
 */
#ifndef MY_RS485_BAUD_RATE
#define MY_RS485_BAUD_RATE 9600
#endif

/**
 * @def MY_RS485_MAX_MESSAGE_LENGTH
 * @brief The maximum message length used for RS485.
 */
#ifndef MY_RS485_MAX_MESSAGE_LENGTH
#define MY_RS485_MAX_MESSAGE_LENGTH 40
#endif

/**********************************
*  NRF24L01P Driver Defaults
***********************************/

// Enables RF24 encryption (all nodes and gateway must have this enabled, and all must be personalized with the same AES key)
//#define MY_RF24_ENABLE_ENCRYPTION

/**
 * @def MY_DEBUG_VERBOSE_RF24
 * @brief Enable MY_DEBUG_VERBOSE_RF24 flag for verbose debug prints related to the RF24 driver. Requires DEBUG to be enabled.
 */
//#define MY_DEBUG_VERBOSE_RF24

/**
 * @def MY_RF24_SPI_MAX_SPEED
 * @brief MY_RF24_SPI_MAX_SPEED to overrule default nRF24L01+ SPI speed.
 */
//#define MY_RF24_SPI_MAX_SPEED 4000000

/**
 * @def MY_RF24_CE_PIN
 * @brief Default RF24 chip enable pin setting. Override in sketch if needed.
 */
#ifndef MY_RF24_CE_PIN
	#if defined(ARDUINO_ARCH_ESP8266)
		#define MY_RF24_CE_PIN 4
	#elif defined(ARDUINO_ARCH_SAMD)
		#define MY_RF24_CE_PIN 27
	#else
		#define MY_RF24_CE_PIN 9
	#endif
#endif

/**
 * @def MY_RF24_CS_PIN
 * @brief Default RF24 chip select pin setting. Override in sketch if needed.
 */
#ifndef MY_RF24_CS_PIN
	#if defined(ARDUINO_ARCH_ESP8266)
		#define MY_RF24_CS_PIN 15
	#elif defined(ARDUINO_ARCH_SAMD)
		#define MY_RF24_CS_PIN 3
	#else
		#define MY_RF24_CS_PIN 10
	#endif
#endif

/**
 * @def MY_RF24_PA_LEVEL
 * @brief Default RF24 PA level. Override in sketch if needed.
 */
#ifndef MY_RF24_PA_LEVEL
#define MY_RF24_PA_LEVEL RF24_PA_MAX
#endif

/**
 * @def MY_RF24_CHANNEL
 * @brief RF channel for the sensor net, 0-125.
 * Frequence: 2400 Mhz - 2525 Mhz Channels: 126
 * http://www.mysensors.org/radio/nRF24L01Plus.pdf
 * 0 => 2400 Mhz (RF24 channel 1)
 * 1 => 2401 Mhz (RF24 channel 2)
 * 76 => 2476 Mhz (RF24 channel 77)
 * 83 => 2483 Mhz (RF24 channel 84)
 * 124 => 2524 Mhz (RF24 channel 125)
 * 125 => 2525 Mhz (RF24 channel 126)
 * In some countries there might be limitations, in Germany for example only the range 2400,0 - 2483,5 Mhz is allowed
 * http://www.bundesnetzagentur.de/SharedDocs/Downloads/DE/Sachgebiete/Telekommunikation/Unternehmen_Institutionen/Frequenzen/Allgemeinzuteilungen/2013_10_WLAN_2,4GHz_pdf.pdf
 */
#ifndef MY_RF24_CHANNEL
#define MY_RF24_CHANNEL	76
#endif

/**
 * @def MY_RF24_DATARATE
 * @brief RF24 datarate (RF24_250KBPS for 250kbs, RF24_1MBPS for 1Mbps or RF24_2MBPS for 2Mbps).
 */
#ifndef MY_RF24_DATARATE
#define MY_RF24_DATARATE RF24_250KBPS
#endif

/**
 * @def MY_RF24_BASE_RADIO_ID
 * @brief RF24 radio network identifier.
 *
 * This acts as base value for sensor nodeId addresses. Change this (or channel) if you have more than one sensor network.
 */
#ifndef MY_RF24_BASE_RADIO_ID
#define MY_RF24_BASE_RADIO_ID 0x00,0xFC,0xE1,0xA8,0xA8
#endif

/**
 * @def MY_RF24_ADDR_WIDTH
 * @brief RF24 address width.
 *
 * This defines the width of the base address.
 */
#ifndef MY_RF24_ADDR_WIDTH
#define MY_RF24_ADDR_WIDTH 5
#endif

/**
 * @def MY_RF24_SANITY_CHECK
 * @brief RF24 sanity check to verify functional RF module
 *
 * This reads back and compares configuration registers. Disable if using non-P modules
 */
#define MY_RF24_SANITY_CHECK

// Enable SOFTSPI for NRF24L01, useful for the W5100 Ethernet module
//#define MY_SOFTSPI

/**
 * @def MY_SOFT_SPI_SCK_PIN
 * @brief Soft SPI SCK pin.
 */
#ifndef MY_SOFT_SPI_SCK_PIN
#define MY_SOFT_SPI_SCK_PIN 14
#endif

/**
 * @def MY_SOFT_SPI_MISO_PIN
 * @brief Soft SPI MISO pin.
 */
#ifndef MY_SOFT_SPI_MISO_PIN
#define MY_SOFT_SPI_MISO_PIN 16
#endif

/**
 * @def MY_SOFT_SPI_MOSI_PIN
 * @brief Soft SPI MOSI pin.
 */
#ifndef MY_SOFT_SPI_MOSI_PIN
#define MY_SOFT_SPI_MOSI_PIN 15
#endif

/**********************************
*  RFM69 Driver Defaults
***********************************/

/**
 * @def MY_RFM69_FREQUENCY
 * @brief RFM69 frequency to use (RF69_433MHZ for 433MHz, RF69_868MHZ for 868MHz or RF69_915MHZ for 915MHz).
 *
 * This must match the hardware version of the RFM69 radio.
 */
#ifndef MY_RFM69_FREQUENCY
#define MY_RFM69_FREQUENCY   RF69_868MHZ
#endif

/**
 * @def MY_IS_RFM69HW
 * @brief Enable this if you're running the RFM69HW model.
 */
//#define MY_IS_RFM69HW

/**
 * @def MY_RFM69HW
 * @brief Set to true if @ref MY_IS_RFM69HW is set.
 */
#ifdef MY_IS_RFM69HW
	#define MY_RFM69HW true
#else
	#define MY_RFM69HW false
#endif

/**
 * @def MY_RFM69_NETWORKID
 * @brief RFM69 Network ID. Use the same for all nodes that will talk to each other.
 */
#ifndef MY_RFM69_NETWORKID
#define MY_RFM69_NETWORKID     100
#endif

/**
 * @def MY_RF69_IRQ_PIN
 * @brief RF69 IRQ pin.
 */
#ifndef MY_RF69_IRQ_PIN
#define MY_RF69_IRQ_PIN RF69_IRQ_PIN
#endif

/**
 * @def MY_RF69_SPI_CS
 * @brief RF69 SPI chip select pin.
 */
#ifndef MY_RF69_SPI_CS
#define MY_RF69_SPI_CS RF69_SPI_CS
#endif

/**
 * @def MY_RF69_IRQ_NUM
 * @brief RF69 IRQ pin number.
 */
#ifndef MY_RF69_IRQ_NUM
	#if defined(ARDUINO_ARCH_ESP8266)
		#define MY_RF69_IRQ_NUM MY_RF69_IRQ_PIN
	#else
		#define MY_RF69_IRQ_NUM RF69_IRQ_NUM
	#endif
#endif

// Enables RFM69 encryption (all nodes and gateway must have this enabled, and all must be personalized with the same AES key)
//#define MY_RFM69_ENABLE_ENCRYPTION

/**************************************
* Ethernet Gateway Transport  Defaults
***************************************/

// The gateway options available
//#define MY_GATEWAY_W5100
//#define MY_GATEWAY_ENC28J60
//#define MY_GATEWAY_ESP8266

/**
 * @def MY_PORT
 * @brief The Ethernet TCP/UDP port to open on controller or gateway.
 */
#ifndef MY_PORT
#define MY_PORT 5003
#endif

// Static ip address of gateway (if this is disabled, DHCP will be used)
//#define MY_IP_ADDRESS 192,168,178,66

// Enables UDP mode for Ethernet gateway (W5100)
//#define MY_USE_UDP

/**
 * @def MY_IP_RENEWAL_INTERVAL
 * @brief DHCP, default renewal setting in milliseconds.
 */
#ifndef MY_IP_RENEWAL_INTERVAL
#define MY_IP_RENEWAL_INTERVAL 60000
#endif

/**
 * @def MY_MAC_ADDRESS
 * @brief Ethernet MAC address.
 *
 * This needs to be unique on the network.
 */
#ifndef MY_MAC_ADDRESS
#define MY_MAC_ADDRESS 0xAD, 0xAD, 0xBE, 0xAD, 0xFE, 0xED
#endif

// Controller ip-address, if this is defined, gateway will act as a client trying to contact controller on MY_PORT.
// If MY_CONTROLLER_IP_ADDRESS is left un-defined, gateway acts as server allowing incoming connections.
//#define MY_CONTROLLER_IP_ADDRESS 192, 168, 178, 254

/**
 * @defgroup MyLockgrp MyNodeLock
 * @ingroup internals
 * @{
 * @brief The node lock feature is a security related feature. It locks a node that suspect itself for being
 * under some form of attack.
 *
 * This is achieved by having a counter stored in EEPROM which decrements when suspicious activity is detected.
 * If the counter reaches 0, node will not work anymore and will transmit a @ref I_LOCKED message to the
 * gateway/controller with 30m intervals. Payload is a string with a reason for the locking.
 * The string is abbreviated to accomodate a signature. The following abbreviations exist at the moment:
 * - LDB (Locked During Boot)
 * - TMNR (Too Many Nonce Requests)
 * - TMFV (Too Many Failed Verifications)
 *
 * Typically, the counter only decrements when suspicious activity happens in a row.
 * It is reset if legit traffic is present.

 * Examples of malicious activity are:
 * - Repeatedly incorrectly checksummed OTA firmware
 * - Repeated requests for signing nonces without properly signed messages arriving
 * - Repeatedly failed signature verifications
 *
 * If counter reaches zero, node locks down and EEPROM has to be erased/reset to reactivate node.
 * Node can also be unlocked by grounding a pin (see @ref MY_NODE_UNLOCK_PIN).
 *
 * The size of the counter can be adjusted using @ref MY_NODE_LOCK_COUNTER_MAX.
 *
 * @def MY_NODE_LOCK_FEATURE
 * @brief Enable this to activate intrusion prevention mechanisms on the node.
 */
//#define MY_NODE_LOCK_FEATURE

/**
 * @def MY_NODE_UNLOCK_PIN
 * @brief By grounding this pin durig reset of a locked node, the node will unlock.
 *
 * If using a secure bootloader, grounding the pin is the only option to reactivate the node.
 * If using stock Android bootloader or a DualOptiBoot it is also possible to download a sketch
 * using serial protocol to erase EEPROM to unlock the node.
 */
#ifndef MY_NODE_UNLOCK_PIN
#define MY_NODE_UNLOCK_PIN 14
#endif

/**
 * @def MY_NODE_LOCK_COUNTER_MAX
 * @brief Maximum accepted occurances of suspected malicious activity in a node.
 *
 * Counter decrements on reoccuring incidents but resets if legitimate behaviour is identified.
 */
#ifndef MY_NODE_LOCK_COUNTER_MAX
#define MY_NODE_LOCK_COUNTER_MAX 5
#endif
/** @}*/ // Node lock group

#endif

// Doxygen specific constructs, not included when built normally
// This is used to enable disabled macros/definitions to be included in the documentation as well.
#if DOXYGEN
#define MY_SIGNING_ATSHA204
#define MY_SIGNING_SOFT
#define MY_SIGNING_REQUEST_SIGNATURES
#define MY_SIGNING_NODE_WHITELISTING {{.nodeId = GATEWAY_ADDRESS,.serial = {0x09,0x08,0x07,0x06,0x05,0x04,0x03,0x02,0x01}}}
#define MY_IS_RFM69HW
#define MY_PARENT_NODE_IS_STATIC
#define MY_REGISTRATION_CONTROLLER
#define MY_DEBUG_VERBOSE_RF24
#define MY_TRANSPORT_SANITY_CHECK
#endif

edit2:

Now I get this this from the node on my gateway´s serial monitor:

0;255;3;0;9;TSP:MSG:READ 4-4-255 s=255,c=3,t=7,pt=0,l=0,sg=0:
0;255;3;0;9;TSP:MSG:BC
0;255;3;0;9;TSP:MSG:FPAR REQ (sender=4)
0;255;3;0;9;TSP:CHKUPL:OK
0;255;3;0;9;TSP:MSG:GWL OK
0;255;3;0;9;!TSP:MSG:SEND 0-0-4-4 s=255,c=3,t=8,pt=1,l=1,sg=0,ft=0,st=fail:0
0;255;3;0;9;TSP:MSG:READ 4-4-255 s=255,c=3,t=7,pt=0,l=0,sg=0:
0;255;3;0;9;TSP:MSG:BC
0;255;3;0;9;TSP:MSG:FPAR REQ (sender=4)
0;255;3;0;9;TSP:CHKUPL:OK (FLDCTRL)
0;255;3;0;9;TSP:MSG:GWL OK
0;255;3;0;9;!TSP:MSG:SEND 0-0-4-4 s=255,c=3,t=8,pt=1,l=1,sg=0,ft=0,st=fail:0
0;255;3;0;9;TSP:MSG:READ 4-4-255 s=255,c=3,t=7,pt=0,l=0,sg=0:
0;255;3;0;9;TSP:MSG:BC
0;255;3;0;9;TSP:MSG:FPAR REQ (sender=4)
0;255;3;0;9;TSP:CHKUPL:OK (FLDCTRL)
0;255;3;0;9;TSP:MSG:GWL OK
0;255;3;0;9;!TSP:MSG:SEND 0-0-4-4 s=255,c=3,t=8,pt=1,l=1,sg=0,ft=0,st=fail:0
0;255;3;0;9;TSP:MSG:READ 4-4-255 s=255,c=3,t=7,pt=0,l=0,sg=0:
0;255;3;0;9;TSP:MSG:BC
0;255;3;0;9;TSP:MSG:FPAR REQ (sender=4)
0;255;3;0;9;TSP:CHKUPL:OK (FLDCTRL)
0;255;3;0;9;TSP:MSG:GWL OK
0;255;3;0;9;!TSP:MSG:SEND 0-0-4-4 s=255,c=3,t=8,pt=1,l=1,sg=0,ft=0,st=fail:0
0;255;3;0;9;TSP:MSG:READ 4-4-255 s=255,c=3,t=7,pt=0,l=0,sg=0:
0;255;3;0;9;TSP:MSG:BC
0;255;3;0;9;TSP:MSG:FPAR REQ (sender=4)
0;255;3;0;9;TSP:CHKUPL:OK
0;255;3;0;9;TSP:MSG:GWL OK
0;255;3;0;9;!TSP:MSG:SEND 0-0-4-4 s=255,c=3,t=8,pt=1,l=1,sg=0,ft=0,st=fail:0
0;255;3;0;9;TSP:MSG:READ 4-4-255 s=255,c=3,t=7,pt=0,l=0,sg=0:
0;255;3;0;9;TSP:MSG:BC
0;255;3;0;9;TSP:MSG:FPAR REQ (sender=4)
0;255;3;0;9;TSP:CHKUPL:OK (FLDCTRL)
0;255;3;0;9;TSP:MSG:GWL OK
0;255;3;0;9;!TSP:MSG:SEND 0-0-4-4 s=255,c=3,t=8,pt=1,l=1,sg=0,ft=0,st=fail:0
0;255;3;0;9;TSP:MSG:READ 4-4-255 s=255,c=3,t=7,pt=0,l=0,sg=0:
0;255;3;0;9;TSP:MSG:BC
0;255;3;0;9;TSP:MSG:FPAR REQ (sender=4)
0;255;3;0;9;TSP:CHKUPL:OK (FLDCTRL)
0;255;3;0;9;TSP:MSG:GWL OK
0;255;3;0;9;!TSP:MSG:SEND 0-0-4-4 s=255,c=3,t=8,pt=1,l=1,sg=0,ft=0,st=fail:0
0;255;3;0;9;TSP:MSG:READ 4-4-255 s=255,c=3,t=7,pt=0,l=0,sg=0:
0;255;3;0;9;TSP:MSG:BC
0;255;3;0;9;TSP:MSG:FPAR REQ (sender=4)
0;255;3;0;9;TSP:CHKUPL:OK (FLDCTRL)
0;255;3;0;9;TSP:MSG:GWL OK
0;255;3;0;9;!TSP:MSG:SEND 0-0-4-4 s=255,c=3,t=8,pt=1,l=1,sg=0,ft=0,st=fail:0
0;255;3;0;9;TSP:SANCHK:OK
0;255;3;0;9;TSP:MSG:READ 4-4-255 s=255,c=3,t=7,pt=0,l=0,sg=0:
0;255;3;0;9;TSP:MSG:BC
0;255;3;0;9;TSP:MSG:FPAR REQ (sender=4)
0;255;3;0;9;TSP:CHKUPL:OK (FLDCTRL)
0;255;3;0;9;TSP:MSG:GWL OK
0;255;3;0;9;!TSP:MSG:SEND 0-0-4-4 s=255,c=3,t=8,pt=1,l=1,sg=0,ft=0,st=fail:0
0;255;3;0;9;TSP:MSG:READ 4-4-255 s=255,c=3,t=7,pt=0,l=0,sg=0:
0;255;3;0;9;TSP:MSG:BC
0;255;3;0;9;TSP:MSG:FPAR REQ (sender=4)
0;255;3;0;9;TSP:CHKUPL:OK (FLDCTRL)
0;255;3;0;9;TSP:MSG:GWL OK
0;255;3;0;9;!TSP:MSG:SEND 0-0-4-4 s=255,c=3,t=8,pt=1,l=1,sg=0,ft=0,st=fail:0
0;255;3;0;9;TSP:MSG:READ 4-4-255 s=255,c=3,t=7,pt=0,l=0,sg=0:
0;255;3;0;9;TSP:MSG:BC
0;255;3;0;9;TSP:MSG:FPAR REQ (sender=4)
0;255;3;0;9;TSP:CHKUPL:OK (FLDCTRL)
0;255;3;0;9;TSP:MSG:GWL OK

and so on...

edit: I restarted my gateway and the nodes, it is working for a while, but after 1 or 2 days 1 or more nodes freeze. Does anybody else have equal problems?

carleki

I have ordered the 2.0 boards, they are on their way to my home

I'm plannign to use them as :

temperature node
door sensor

For the door sensor, can you tell me if I'm good :
I have to use a 1MOhm resistor between the pin of atmega and one wire of the reed switch ? So I will have the longest battery life (my atmegas are burned at 1 Mhz or 8 Mhz)

Am I right ?

My Slim 2AA Battery Node

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