Posts made by hiddenuser

@gohan said in Easy/Newbie PCB for MySensors:

Thanks @gohan for the feedback. Can I have the link to your solar project!

@gohan @sundberg84
This is my setup. my battery reading is a constant 2.75v, this is not true the multi meter says ~4v

Thanks @sundberg84 and @gohan

I have used made the board for 3.3v set up as per the instruction. I have usd the output from tp4056 into the Battery connector of the board I have a step board from https://www.aliexpress.com/item/New-Electric-Unit-1-PC-NEW-DC-0-8-3-3V-to-DC-3-3V-StepUP/32724361266.html According to the specification given in the same link it is supposed to stabilize to 3.3v above 3v but the sensor reports something else back to the gateway.

I do not have an electronics background. I wend through the pdf files and order the parts and looks like I got the wrong resistor and capacitor or wrong part. Looks like I have to wait for an expert to comment let me know which resistor/capacitor goes where what part size. I would love to hear from someone

IS it possible to use TP4056 (https://www.aliexpress.com/item/5-pcs-Micro-USB-5V-1A-18650-TP4056-Lithium-Battery-Charger-Module-Charging-Board-With-Protection/32728720869.html?spm=a2g0s.9042311.0.0.A0lkC7) this instead of using the step up booster?
Thanks!!

@Miroslav-Kadaně Thanks!!

@gohan I have a lot c version with me

@llegoff nice board!!! I think I am going to build this. However just wondering if this will support rfm69hcw?
Thanks

@NeverDie Not sure if you are referring to me?

Does any one have links to dirty pcb or OSH Park? Thanks a lot

@Koresh Might be a dumb question I am planning to work on this board, where do I find the complete part list.

@petewill Thanks Pete!!! .. I shall give it a try.

Can't wait to try this baby!!!!

@Koresh waiting for the final PCB design + BOM so I can go shop

@doug Can't wait for you to release the BOM

@Ed1500 @gohan Thanks. I am trying to create an ehternet gateway so I can do OTAs.

@Ed1500 Thanks for you feedback. I have switched over to using W5100. However I have noticed that for some reason I am missing a data which is sent over nrf24. The gaps in the data are random and I can't seem to figure out why this is happening. BTW I am using domoticz on a pi to get the data. Initially I was using mysensor over usb to get the data and used to work fine. In order to get the update OTA I am trying to switch to ethernet Gateway and does not seem to work

//#define MY_DEBUG

#define MY_RADIO_NRF24
#define MY_GATEWAY_W5100

#define MY_SOFTSPI
#define MY_SOFT_SPI_SCK_PIN 14
#define MY_SOFT_SPI_MISO_PIN 16
#define MY_SOFT_SPI_MOSI_PIN 15

#define MY_RF24_CE_PIN 5
#define MY_RF24_CS_PIN 6


#define MY_IP_ADDRESS 192,168,0,66   // If this is disabled, DHCP is used to retrieve address
#define MY_PORT 5003

#define MY_MAC_ADDRESS 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED


#define MY_DEFAULT_ERR_LED_PIN 7  // Error led pin
#define MY_DEFAULT_RX_LED_PIN  7  // Receive led pin
#define MY_DEFAULT_TX_LED_PIN  7  // Transmit led pin


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


void setup(){
  delay(10000);
}

void loop(){
}
``

I am not sure where I went wrong the below code hangs half way through. I am using ENC28J60
https://www.aliexpress.com/item/Mini-ENC28J60-Webserver-module-Ethernet-Shield-board-for-Arduino-Nano-v3-0/2037927977.html?spm=2114.40010208.4.8.mUp9p8

#ifndef config_h
#define config_h
#include <stdint.h>

/**********************************
   MySensors configuration
**********************************/
//#define MY_BAUD_RATE 9600
#define MY_DEBUG
//#define MY_BAUD_RATE 38400
//#define MY_BAUD_RATE 115200
//#define MY_NODE_ID 100

#define MY_RADIO_NRF24

// Enable gateway ethernet module type
#define MY_GATEWAY_ENC28J60
//#define MY_GATEWAY_W5100
// Enabled repeater feature for this node
//#define MY_REPEATER_FEATURE


// Enable Soft SPI for NRF radio (note different radio wiring is required)
// The ENC28J60 ethernet module seems to have a hard time co-operate with
// radio on the same spi bus.
#define MY_SOFTSPI
#define MY_SOFT_SPI_SCK_PIN 14
#define MY_SOFT_SPI_MISO_PIN 16
#define MY_SOFT_SPI_MOSI_PIN 15


// When ENC28J60 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


// Gateway IP address
#define MY_IP_ADDRESS 192,168,0,66

// The port to keep open on node server mode / or port to contact in client mode
#define MY_PORT 5003

// Controller ip address. Enables client mode (default is "server" mode).
// Also enable this if MY_USE_UDP is used and you want sensor data sent somewhere.
//#define MY_CONTROLLER_IP_ADDRESS 192, 168, 0, 55

// The MAC address can be anything you want but should be unique on your network.
// Newer boards have a MAC address printed on the underside of the PCB, which you can (optionally) use.
// Note that most of the Ardunio examples use  "DEAD BEEF FEED" for the MAC address.
#define MY_MAC_ADDRESS 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xFE

// 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

#define MY_DEFAULT_ERR_LED_PIN 7  // Error led pin
#define MY_DEFAULT_RX_LED_PIN  8  // Receive led pin
#define MY_DEFAULT_TX_LED_PIN  9  // the PCB, on board LED



//#define MY_DISABLED_SERIAL


// Turn off debug if serial pins is used for other stuff
#ifdef MY_DISABLED_SERIAL
#undef MY_DEBUG
#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 (100u)
#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 (120u)
#endif

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


/**
* @def MY_RX_MESSAGE_BUFFER_FEATURE
* @brief This enabled the receiving buffer feature.
*
* This feature is currently not supported for RFM69 and RS485, for RF24 MY_RF24_IRQ_PIN has to be defined.
*/
//#define MY_RX_MESSAGE_BUFFER_FEATURE

/**
 * @def MY_RX_MESSAGE_BUFFER_SIZE
 * @brief Declare the amount of incoming messages that can be buffered.
 */
#ifdef MY_RX_MESSAGE_BUFFER_FEATURE
#ifndef MY_RX_MESSAGE_BUFFER_SIZE
#define MY_RX_MESSAGE_BUFFER_SIZE  (20)
#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


#endif

#include "config.h"


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

void setup() {
}
void loop() {
}

Output:

0;255;3;0;9;MCO:BGN:INIT GW,CP=RNNGA--,VER=2.1.1
0;255;3;0;9;TSM:INIT
0;255;3;0;9;TSF:WUR:MS=0
0;255;3;0;9;TSM:INIT:TSP OK
0;255;3;0;9;TSM:INIT:GW MODE
0;255;3;0;9;TSM:READY:ID=0,PAR=0,DIS=0
0;255;3;0;9;MCO:REG:NOT NEEDED
IP: 192.168.0.66
0;255;3;0;9;MCO:BGN:STP
0;255;3;0;9;MCO:BGN:INIT OK,TSP=1
0;255;3;0;9;Eth: connect
0;255;3;0;9;Eth: 0;0;3;0;2;
0;255;3;0;9;Eth: 0;0;3;0;2;Get Version
0;255;3;0;9;Eth: 0;0;3;0;18;PING
0;255;3;0;9;TSF:MSG:READ,1-1-255,s=255,c=3,t=7,pt=0,l=0,sg=0:
0;255;3;0;9;TSF:MSG:BC
0;255;3;0;9;TSF:MSG:FPAR REQ,ID=1
0;255;3;0;9;TSF:PNG:SEND,TO=0
0;255;3;0;9;TSF:CKU:OK
0;255;3;0;9;TSF:MSG:GWL OK

ketch uses 26,232 bytes (85%) of program storage space. Maximum is 30,720 bytes.
Global variables use 1,286 bytes (62%) of dynamic memory, leaving 762 bytes for local variables. Maximum is 2,048 bytes.

Pin 6,7, A1,A4

I am building a soil moisture. My atmega328p using custom bootloader Optiboot 1MHz. I am using mysensors easy pcb . it seems to t be chewing on the batteries. I am not sure if it's my code:

#define MY_DEBUG
#define MY_RF24_PA_LEVEL RF24_PA_LOW
#define MY_BAUD_RATE 38400
//#define MY_BAUD_RATE 9600
#define MY_NODE_ID 13

#define MY_RADIO_NRF24
#define VIEW_READING

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


#define round(x) ((x)>=0?(long)((x)+0.5):(long)((x)-0.5))
#define N_ELEMENTS(array) (sizeof(array)/sizeof((array)[0]))
#define NUM_READS 10
#define CHILD_ID_MOISTURE 0
#define CHILD_ID_BATTERY 1
#define SLEEP_TIME 1800000 //300000//10000 // Sleep time between reads (in milliseconds), was 10000
#define STABILIZATION_TIME 500 // Let the sensor stabilize before reading default BOD settings
#define VOLTAGE_PIN A0


int index;
long buffer[NUM_READS];
const long Known_Resistor = 4700;

/// @brief Structure to be used in percentage and resistance values matrix to be filtered (have to be in pairs)
typedef struct {
  int moisture; //!< Moisture
  long resistance; //!< Resistance
} values;


MyMessage soil_msg(CHILD_ID_MOISTURE, V_LEVEL);
MyMessage voltage_msg(CHILD_ID_BATTERY, V_VOLTAGE);


void presentation() {
  sendSketchInfo("Soil Moisture", "2.0");
  present(CHILD_ID_MOISTURE, S_MOISTURE);
  present(CHILD_ID_BATTERY, S_MULTIMETER);
}


void setup() {
  pinMode(6, OUTPUT);
  pinMode(7, OUTPUT);
  digitalWrite(6, LOW);
  digitalWrite(7, LOW);
}




void loop() {
  long moistureLevel = readAggSoilMoisture();

  //float coeff = 100.00 / float(dryLevel);
  float voltage = readVoltage() ;//* 1.57368; // Coeff

  float batteryPcnt = voltage / 3.3 * 100;

#ifdef VIEW_READING
  Serial.print("--Voltage:"); Serial.println(voltage);
  Serial.print("--Battery %:"); Serial.println(batteryPcnt);
  Serial.print("--Soil Sensor value:"); Serial.println(moistureLevel );
#endif

  send(soil_msg.set(moistureLevel, 1));
  //send(soil_msg.set(moistureLevel * coeff, 1));
  sendBatteryLevel(batteryPcnt);
  send(voltage_msg.set(voltage, 3), 1);



  sleep(SLEEP_TIME);
}

float readVoltage() {
  analogReference(INTERNAL);
  fakeRead(VOLTAGE_PIN);
  int sensorValue = analogRead(VOLTAGE_PIN);
  float voltage = sensorValue * 0.003363075;
  analogReference(DEFAULT);
  fakeRead(VOLTAGE_PIN);
  return voltage;

}

void fakeRead(int pin) {
  for (int counter = 0; counter < 5; counter++) {
    analogRead(pin);
    delay(STABILIZATION_TIME);
  }
}


// Averaging algorithm
void addReading(long resistance){
  buffer[index] = resistance;
  index++;
  if (index >= NUM_READS) {
    index = 0;
  }
}

long average(){
  long sum = 0;
  for (int i = 0; i < NUM_READS; i++) {
    sum += buffer[i];
  }
  return (long)(sum / NUM_READS);
}

int readAggSoilMoisture()
{

  measureRawSoilMoisture(6, 7, A1);
  long read1 = average();

  measureRawSoilMoisture(7, 6, A4);
  long read2 = average();
  long sensor1 = (read1 + read2) / 2;
  return int( ((sensor1 / (float)Known_Resistor) * 100.00));
}

void measureRawSoilMoisture (int phase_b, int phase_a, int analog_input)
{
  // read sensor, filter, and calculate resistance value
  // Noise filter: median filter

  for (int i = 0; i < NUM_READS; i++) {

    // Read 1 pair of voltage values
    digitalWrite(phase_a, HIGH);                 // set the voltage supply on
    delayMicroseconds(25);
    int supplyVoltage = analogRead(analog_input);   // read the supply voltage
    delayMicroseconds(25);
    digitalWrite(phase_a, LOW);                  // set the voltage supply off
    delay(1);

    digitalWrite(phase_b, HIGH);                 // set the voltage supply on
    delayMicroseconds(25);
    int sensorVoltage = analogRead(analog_input);   // read the sensor voltage
    delayMicroseconds(25);
    digitalWrite(phase_b, LOW);                  // set the voltage supply off

    // Calculate resistance
    // the 0.5 add-term is used to round to the nearest integer
    // Tip: no need to transform 0-1023 voltage value to 0-5 range, due to following fraction
    long resistance = abs(Known_Resistor * (supplyVoltage - sensorVoltage ) / sensorVoltage) ;

    //Serial.print (" ");
    //Serial.print (supplyVoltage);
    //Serial.print (" ");
    //Serial.print (sensorVoltage);

    //delay(1);
    delay(STABILIZATION_TIME);
    addReading(resistance);
    //Serial.print (" ");
    //Serial.print (resistance);
    //Serial.print ("\t");
  }
  //digitalWrite(phase_a, LOW);
  //digitalWrite(phase_b, LOW);
  //Serial.println();
}

@sundberg84 Thanks a lot.... My ebay seller sent me a Atmega168 5v. I have noticed that you boards supports 5v version too. Would I be able to power it using raw (12v).

Thanks a lot .

Awesome board!!!
How do I access A2, A3 and D8?

Thanks a lot

Hello All,
Wondering if any one of the successful implenters would be able to share their soil moisture graphs,both for a day and over months..

I have added

socat PTY,link=/dev/ttyS81,mode=666,group=dialout,raw PTY,link=/dev/ttyUSB026,mode=666,group=dialout,raw &

to /etc/rc.local

pi@Host-I:~ $ ls -l /dev/ttyU*
lrwxrwxrwx 1 root root 10 Mar 13 16:27 /dev/ttyUSB020 -> /dev/pts/1
lrwxrwxrwx 1 root root 10 Mar 13 16:27 /dev/ttyUSB026 -> /dev/pts/3

On /dev/ttyUSB020 I have my NRF24 module connected and Domoticz and use it with no issues. I want to bring Nod-Red into the equation so I created /dev/ttyUSB026

for some reason I cant connect Node-Red to /dev/ttyUSB020
Node-Red keeps saying
Error: Permission denied, cannot open /dev/ttyUSB020

Hi there,
I have a RPI running my gateway(/dev/ttyUSB020) and domoticz is running on the rpi too. How do I used MYSBootloader to push sketches to my sensors?
Thanks

I have used resistor ( 470K+1M ) to measure the voltage on a 5 minute interval. The Soil sensor is out in the garden where the container housing the arduino pro min gets exposed to sun. The voltage reading is high during 1 PM to 4 PM, when its under the sun. I am not sure if this is because of the heat.

The code is given below. Please note I multiply my actual voltage with calibration variable. however during the high voltage time the calibration variable does not seem to work.

• Battery powers the soil sensor.
• The voltage regulator has been removed.
• MCU powered using vcc pin.

//#define MY_DEBUG
#define MY_RF24_PA_LEVEL RF24_PA_LOW
#define MY_BAUD_RATE 38400
#define MY_RADIO_NRF24
#define VIEW_READING

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


#define round(x) ((x)>=0?(long)((x)+0.5):(long)((x)-0.5))
#define N_ELEMENTS(array) (sizeof(array)/sizeof((array)[0]))
#define NUM_READS 10
#define CHILD_ID_MOISTURE 0
#define CHILD_ID_BATTERY 1
#define SLEEP_TIME 300000//10000 // Sleep time between reads (in milliseconds), was 10000
#define STABILIZATION_TIME 500 // Let the sensor stabilize before reading default BOD settings
#define VOLTAGE_PIN A0


int index;
long buffer[NUM_READS];
const long Known_Resistor = 4700;

/// @brief Structure to be used in percentage and resistance values matrix to be filtered (have to be in pairs)
typedef struct {
  int moisture; //!< Moisture
  long resistance; //!< Resistance
} values;


MyMessage soil_msg(CHILD_ID_MOISTURE, V_LEVEL);
MyMessage voltage_msg(CHILD_ID_BATTERY, V_VOLTAGE);


void presentation() {
  sendSketchInfo("Soil Moisture", "2.0");
  present(CHILD_ID_MOISTURE, S_MOISTURE);
  present(CHILD_ID_BATTERY, S_MULTIMETER);
}


void setup() {
  pinMode(6, OUTPUT);
  pinMode(7, OUTPUT);
  digitalWrite(6, LOW);
  digitalWrite(7, LOW);
}




void loop() {
  //float dryLevel = readNoMoisture();
  long moistureLevel = readAggSoilMoisture();

  //float coeff = 100.00 / float(dryLevel);
  float voltage = readVoltage() * 1.57368; 

  float batteryPcnt = voltage / 3.3 * 100;

#ifdef VIEW_READING
  Serial.print("--Voltage:"); Serial.println(voltage);
  Serial.print("--Battery %:"); Serial.println(batteryPcnt);
  Serial.print("--Soil Sensor value:"); Serial.println(moistureLevel );
#endif

  send(soil_msg.set(moistureLevel, 1));
  sendBatteryLevel(batteryPcnt);
  send(voltage_msg.set(voltage, 3), 1);



  sleep(SLEEP_TIME);
}

float readVoltage() {
  analogReference(INTERNAL);
  fakeRead(VOLTAGE_PIN);
  int sensorValue = analogRead(VOLTAGE_PIN);
  float voltage = sensorValue * 0.003363075;
  analogReference(DEFAULT);
  fakeRead(VOLTAGE_PIN);
  return voltage;

}

void fakeRead(int pin) {
  for (int counter = 0; counter < 5; counter++) {
    analogRead(pin);
    delay(STABILIZATION_TIME);
  }
}


// Averaging algorithm
void addReading(long resistance)
{
  buffer[index] = resistance;
  index++;
  if (index >= NUM_READS) {
    index = 0;
  }
}

long average()
{
  long sum = 0;
  for (int i = 0; i < NUM_READS; i++) {
    sum += buffer[i];
  }
  return (long)(sum / NUM_READS);
}

int readAggSoilMoisture()
{

  measureRawSoilMoisture(6, 7, A1);
  long read1 = average();

  measureRawSoilMoisture(7, 6, A2);
  long read2 = average();
  long sensor1 = (read1 + read2) / 2;
  return int( ((sensor1 / (float)Known_Resistor) * 100.00));
}



void measureRawSoilMoisture (int phase_b, int phase_a, int analog_input)
{
  // read sensor, filter, and calculate resistance value
  // Noise filter: median filter

  for (int i = 0; i < NUM_READS; i++) {

    // Read 1 pair of voltage values
    digitalWrite(phase_a, HIGH);                 // set the voltage supply on
    delayMicroseconds(25);
    int supplyVoltage = analogRead(analog_input);   // read the supply voltage
    delayMicroseconds(25);
    digitalWrite(phase_a, LOW);                  // set the voltage supply off
    delay(1);

    digitalWrite(phase_b, HIGH);                 // set the voltage supply on
    delayMicroseconds(25);
    int sensorVoltage = analogRead(analog_input);   // read the sensor voltage
    delayMicroseconds(25);
    digitalWrite(phase_b, LOW);                  // set the voltage supply off

    // Calculate resistance
    // the 0.5 add-term is used to round to the nearest integer
    // Tip: no need to transform 0-1023 voltage value to 0-5 range, due to following fraction
    long resistance = abs(Known_Resistor * (supplyVoltage - sensorVoltage ) / sensorVoltage) ;

  
    delay(1);
    delay(STABILIZATION_TIME);
    addReading(resistance);
 
  }

}

@tbowmo Thanks

Looks Nice!!! Excuse me for my ignorance.

• What's c1 marked on the board?
• Would I be able to use this with jModule?

I removed the both the LED and the Voltage Regulator of an Arduino pro min 3.3v . The simple sketch on it's own works fine. However when I connect an NRF24L01 it does not communicate back to the gateway..

Hey I have followed https://www.mysensors.org/build/battery and removed the onboard LED and 3.3 VDC regulator. I have powered using VCC pin. Do I need to external power the nrf module ?