Posts made by se-O-matic

With Home Assistant as Operating System it might not work, if the radio is connected to the GPIO of the Pi. The HASS-Os has some restrictions to run software like the Pi gateway beside Homeassistant.

I have currently a setup with a RFM69 connected to the GPIO for the RPI ethernet gateway. Homeassistant runs in a container and the mysensors plugin connects in Homeassistant to localhost or 127.0.0.1. But I have problems with the stability (I think so) with this combination, as seen in this forum.
In my opinion is a Serial (USB-Serial-Converter) Gateway with Homeassistant the best choice. So I want to build another gateway and resinstall my Pi with HASS-Os.

No, it does not recover.

The Problem is not easy to debug. I now want to build a serial gateway. With that, I am more flexible to test. Maybe to run MySensors on a second raspberry pi with a standard Home Assistant HASS-Os image. Or I check the MySensors network with MyController.
At this moment i run the whole system on 64 Bit raspbian, with HA in docker, which is a little bit experimental and i had to fix some lines in the ethernet gateway to compile it for 64 bit. So this is experimental, too.

Hi,
thanks for the reply.
Yes, a restart of the raspberry is enough.

This is the code of the temperatur sensors:

/*
 * My Sensors Node for temperature and humidity
 * 
 * Hardware: MSN R00
 * BME280 (temp, hum) at I2C
 * 
 * Runs at 2 x AA batterys
 * 
 */

// RFM69CW at 433 MHz / Raspebrry Pi as ethernet gateway
#define MY_RADIO_RFM69
#define MY_RFM69_NEW_DRIVER
#define MY_RFM69_FREQUENCY RFM69_433MHZ 
#include <MySensors.h>

// BME280 library from Adafruit, need the Adafruit "Unified Sensor library", too
#include <Adafruit_BME280.h>

// Define child IDs and messages
#define CHILD_ID_TEMP  0
#define CHILD_ID_HUM   1
MyMessage msgTemp(CHILD_ID_TEMP, V_TEMP);
MyMessage msgHum(CHILD_ID_HUM, V_HUM);

// Define strings, which are send to the controller
#define SKETCHSTR "Temp Humidity Sensor"
#define SKETCHVER "1.0"

// Sleep time for sensor 
uint32_t SLEEP_TIME = 300000;    // sleep time between reads (seconds * 1000 milliseconds)

// Constructor for sensor
Adafruit_BME280 bme;
#define BME280_TEMP_OFFSET -1.0    // calibration ofsset for the temperature

// Battery stuff
#define EMPTY 536         // Brown Out ATMega   //536 equal to 1.8 V
#define SCALE 0.2415      // (100/950-EMPTY)    //950 equal to 3.2 V
int BATTERY_SENSE_PIN = A0;   // select the input pin for the battery sense point
int batteryPcnt = 0, oldBatteryPcnt = 0;

// Global variables for sensor values
float temp = 25.0, hum = 50.0;
float temp_last = 0.0, hum_last = 0.0;

// Helper for calculate battery percentage
int calc_pcnt(int value){
  int batteryPcnt = ((value - EMPTY) * SCALE);
  batteryPcnt = (batteryPcnt > 100) ? 100 : batteryPcnt;
  batteryPcnt = (batteryPcnt < 0) ? 0 : batteryPcnt;
  return batteryPcnt;
}

void setup() {
  // use the 1.1 V internal reference
  analogReference(INTERNAL);

  //BME280 stuff
  bme.begin(0x77);
  bme.setSampling(Adafruit_BME280::MODE_FORCED,
                  Adafruit_BME280::SAMPLING_X1,   // temperature
                  Adafruit_BME280::SAMPLING_NONE, // pressure
                  Adafruit_BME280::SAMPLING_X1,   // humidity
                  Adafruit_BME280::FILTER_OFF );

  oldBatteryPcnt = calc_pcnt(analogRead(BATTERY_SENSE_PIN));
}

void presentation()
{
  // Send the sketch version information to the gateway and Controller
  sendSketchInfo(SKETCHSTR, SKETCHVER);
 
  present(CHILD_ID_TEMP, S_TEMP, "Temperature");
  present(CHILD_ID_HUM, S_HUM, "Humidity");
}

void loop() {
  //read temp and hum and lux
  bme.takeForcedMeasurement();
  temp = bme.readTemperature();
  temp = temp + BME280_TEMP_OFFSET;
  hum = bme.readHumidity();

  if(temp != temp_last){
    send(msgTemp.set(temp, 2));
    temp_last = temp;
  }
  if(hum != hum_last){
    send(msgHum.set(hum, 2));
    hum_last = hum;
  }

  // send the battery level
  batteryPcnt = calc_pcnt(analogRead(BATTERY_SENSE_PIN));
  if (batteryPcnt < oldBatteryPcnt) {
      sendBatteryLevel(batteryPcnt);
      oldBatteryPcnt = batteryPcnt;
  }
 
  sleep(SLEEP_TIME);
}

It's also hosted on github: https://github.com/se-o-matic/msn/blob/master/Software/msn_BME280/msn_BME280.ino

Thanks!

Hi,
i'm running a sensor network for a couple of years without problems. The setup is described below.
Some days ago i build an other sensor node and now suddenly a random sensor is missing a view days after HomeAssistant restart.
So, after a restart everything works perfect. But after a view days the temperature reading of one node, not always the same node, didnt work. The values for humidity and battery level still work from this node. After a restart of the Pi everything works again.
One time I didnt restart for a couple of days, even more temperature sensors failed. And again the humidity readings still work. After a restart everything works again.

My network:
A Raspberry Pi 3 with 64 Bit Raspbian. Homeassistant running in Docker.
A RFM69 rf module is connected to the GPIO of the RPI to run a ethernet gateway. I had to recompile it because of the 64 Bit structure.
I have several sensors based of an arduino structure and the RFM69 modules:

• 3 Temperature/Humidity PLUS ONE NEW Temp/Hum sensor
• 1 Temp/Hum/Light sensor
• 1 USB charger sensor (report two current values, if switched on)
• 1 power meter sensor (actually offline to rewrite the code for an new power meter with different protocol)

Additionally a couple of actuators and switches over zigbee (SonOff USB stick), like curtains and wall plugs.
And one BTLE temp/hum sensor.

Now I 'm a little helpless where to start the debugging. I think the problem occurs between the mysensors gateway and HomeAssistant.
Is this a space problem for storing the data?
Maybe I can switch to a more convenient setup, like an mysensors USB gateway and the HASS-OS from HomeAssistant instead of the "experimental" docker stuff?

I hope someone has a good idea to help.

Thanks!
se-O-matic

Hello,

finally, ... I had time to test the "Option 2".
Because the stock of all shops are empty, I used my old RPI 3 B+. But after all, the CPU runs at 50%. Even the 1 GB ram is half free.

The way wasn't as easy as I thought. But now the setup runs pretty good.
This steps I had to make:

1. A fresh install of Raspian Lite (I used 64-Bit, if this is needed? I dont know)
2. Installed "Home Assistant Supervised", which runs in a docker. (I found a tutorial based on this informations: https://github.com/home-assistant/supervised-installer)
3. Installed the MySensors Gateway with some changes! (https://www.mysensors.org/build/raspberry)
   3b. The manual works fine for 32 Bit raspbian. For 64 Bit you have to edit two files bevor the compile starts. (https://forum.mysensors.org/topic/11456/is-mysensors-rpi-gw-32bit-only/8)
   In my case i have to change the section for the BCM2837 (= RPI3) as described in the post.

Now, I have a clean setup for my smarthome with MySensors Nodes and Zigbee Nodes.

The RFM69 ist directly connected to the GPIO of the PI.

The power consumption is araound 2 W. Somewhat lower when idle.

Thanks for the answers.

I want to keep the raspberry pi as central. This should fit all my needs in my rental apartment.
For HA, I have chosen a SD-card with application class A2.

For a clean setup, i will try to run HA in docker. So can i use the same Raspberry as gateway and for the controller.
So I dont have to use a "rare" mega328p for a serial gateway.

I report my results, when I find some time to work on it.

Hi,

currently I'm using MySensors RPI-Gateway and MyController on the same RPI 2 .
I connected a RFM69 Modul directly to the GPIO of the Pi.
This system works fine for many Years.

Now its time for an upgrade.
I want to use HA and I want to add ZigBee devices. For that I purchased the SonOff Dongle-P and I grapped a RPI 3 for testing HA parallel to my running setup.

Now I want to tidy up. Two RPI for a task, which one alone can do is not the best solution.
The question of all questions is now, how to combine HA, MySensors and Zigbee in the best way?

Option 1 (I have to build the serial GW, and ICs (328P) are rare at the moment):
HassOS + MySensors Serial Gateway (RFM69 connected to an ATMEGA328 connected to the UART-pins from the RPI) + ZigBee USB Stick. (I dont want to use a UART<-> USB chip, when a RPI has native UART on the GPIO)

Option 2 (Favorite, because I dont have to build hardware stuff):
HA running in Docker + MySensors RPI Gatway (RFM69 connected directly to the GPIO) + ZigBee USB Stick. (I found a tutorial for installing HA in Docker with Supervisor)

Are there any pitfalls in the Options above?
Can I use the UART Port "/dev/ttyAMA0" in HassOS?
Are there any limitations in Option2, when HA running in Docker?

I hope someone can give some tips.

Thanks!
Sebastian

Hi
I made a universal device for mysensors to building easy different nodes. The PCB fits in a small case (Strapubox 6090), so simple sensors can build with minimal effort.

The minimal assembly consists of a Mega328P microcontroller (as seen on many Arduinos), a RFM69CW rf module with 868 or 433 MHz and some little stuff for reverse protection and battery monitoring.

With different assembly options, this PCB can be used for:

• Temperature, humidity and pressure measurements (With BME280 assembled)
• Temp-Sensor above with additional light level (with extra BH1750 on the proto field)
• Cheap temperature measurement (With DS18B20 assembled on the small proto field)
• IR-reader for digital Power meter (with external IR Head connected to the UART)
• Prototyping on Breadboards with soldered pin header

The PCB features also

• ISP pins are connected to the pin header for easy flashing the bootloader
• Arduino pro mini compatible pin header for connecting a cheap USB-UART-board without wires
• Optional LED (for example for active transmission)
• Mounting holes for fitting in the “Strapubox 6090” case
• A snap off proto board, which fit under or on top of the MSN PCB.

Hardware and software can be found on my github repository. Github/se-O-matic/msn/

MSN as temperature sensors (BME280), complete assembly (without batteries):

MSN as power-meter reader with ir-head:

Greets!