Combining relay and temperature sketch

[Tim76]

@gohan output of the serial port

0 MCO:BGN:INIT NODE,CP=RNNNA--,VER=2.1.1
3 MCO:BGN:BFR
144 TSM:INIT
145 TSF:WUR:MS=0
153 TSM:INIT:TSP OK
154 TSM:INIT:STATID=51
157 TSF:SID:OK,ID=51
158 TSM:FPAR
195 TSF:MSG:SEND,51-51-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=OK:
986 TSF:MSG:READ,0-0-51,s=255,c=3,t=8,pt=1,l=1,sg=0:0
990 TSF:MSG:FPAR OK,ID=0,D=1
2202 TSM:FPAR:OK
2203 TSM:ID
2204 TSM:ID:OK
2206 TSM:UPL
2211 TSF:MSG:SEND,51-51-0-0,s=255,c=3,t=24,pt=1,l=1,sg=0,ft=0,st=OK:1
2232 TSF:MSG:READ,0-0-51,s=255,c=3,t=25,pt=1,l=1,sg=0:1
2237 TSF:MSG:PONG RECV,HP=1
2240 TSM:UPL:OK
2241 TSM:READY:ID=51,PAR=0,DIS=1
2246 TSF:MSG:SEND,51-51-0-0,s=255,c=3,t=15,pt=6,l=2,sg=0,ft=0,st=OK:0100
2284 TSF:MSG:READ,0-0-51,s=255,c=3,t=15,pt=6,l=2,sg=0:0100
2291 TSF:MSG:SEND,51-51-0-0,s=255,c=0,t=17,pt=0,l=5,sg=0,ft=0,st=OK:2.1.1
2301 TSF:MSG:SEND,51-51-0-0,s=255,c=3,t=6,pt=1,l=1,sg=0,ft=0,st=OK:0
4329 TSF:MSG:SEND,51-51-0-0,s=255,c=3,t=11,pt=0,l=25,sg=0,ft=0,st=OK:Greenhouse main controlle
4340 TSF:MSG:SEND,51-51-0-0,s=255,c=3,t=12,pt=0,l=3,sg=0,ft=0,st=OK:1.0
4350 TSF:MSG:SEND,51-51-0-0,s=17,c=0,t=6,pt=0,l=0,sg=0,ft=0,st=OK:
4359 TSF:MSG:SEND,51-51-0-0,s=18,c=0,t=6,pt=0,l=0,sg=0,ft=0,st=OK:
4369 TSF:MSG:SEND,51-51-0-0,s=1,c=0,t=3,pt=0,l=0,sg=0,ft=0,st=OK:
4376 TSF:MSG:SEND,51-51-0-0,s=2,c=0,t=3,pt=0,l=0,sg=0,ft=0,st=OK:
4384 TSF:MSG:SEND,51-51-0-0,s=3,c=0,t=3,pt=0,l=0,sg=0,ft=0,st=OK:
4397 TSF:MSG:SEND,51-51-0-0,s=4,c=0,t=3,pt=0,l=0,sg=0,ft=0,st=OK:
4407 TSF:MSG:SEND,51-51-0-0,s=5,c=0,t=3,pt=0,l=0,sg=0,ft=0,st=OK:
4418 TSF:MSG:SEND,51-51-0-0,s=6,c=0,t=3,pt=0,l=0,sg=0,ft=0,st=OK:
4434 TSF:MSG:SEND,51-51-0-0,s=7,c=0,t=3,pt=0,l=0,sg=0,ft=0,st=OK:
4449 TSF:MSG:SEND,51-51-0-0,s=8,c=0,t=3,pt=0,l=0,sg=0,ft=0,st=OK:
4459 TSF:MSG:SEND,51-51-0-0,s=9,c=0,t=3,pt=0,l=0,sg=0,ft=0,st=OK:
4489 TSF:MSG:SEND,51-51-0-0,s=10,c=0,t=3,pt=0,l=0,sg=0,ft=0,st=OK:
4505 TSF:MSG:SEND,51-51-0-0,s=11,c=0,t=3,pt=0,l=0,sg=0,ft=0,st=OK:
4515 TSF:MSG:SEND,51-51-0-0,s=12,c=0,t=3,pt=0,l=0,sg=0,ft=0,st=OK:
4528 TSF:MSG:SEND,51-51-0-0,s=13,c=0,t=3,pt=0,l=0,sg=0,ft=0,st=OK:
4540 TSF:MSG:SEND,51-51-0-0,s=14,c=0,t=3,pt=0,l=0,sg=0,ft=0,st=OK:
4556 TSF:MSG:SEND,51-51-0-0,s=15,c=0,t=3,pt=0,l=0,sg=0,ft=0,st=OK:
4564 TSF:MSG:SEND,51-51-0-0,s=16,c=0,t=3,pt=0,l=0,sg=0,ft=0,st=OK:
4571 MCO:REG:REQ
4576 TSF:MSG:SEND,51-51-0-0,s=255,c=3,t=26,pt=1,l=1,sg=0,ft=0,st=OK:2
4583 TSF:MSG:READ,0-0-51,s=255,c=3,t=27,pt=1,l=1,sg=0:1
4588 MCO:PIM:NODE REG=1
4590 MCO:BGN:STP
4591 MCO:BGN:INIT OK,TSP=1
4596 MCO:SLP:MS=750,SMS=0,I1=255,M1=255,I2=255,M2=255
4601 MCO:SLP:TPD
4602 MCO:SLP:WUP=-1
4636 TSF:MSG:SEND,51-51-0-0,s=0,c=1,t=0,pt=7,l=5,sg=0,ft=0,st=OK:20.2
4690 TSF:MSG:SEND,51-51-0-0,s=1,c=1,t=0,pt=7,l=5,sg=0,ft=0,st=OK:20.5
4755 TSF:MSG:SEND,51-51-0-0,s=2,c=1,t=0,pt=7,l=5,sg=0,ft=0,st=OK:20.4
7763 MCO:SLP:MS=750,SMS=0,I1=255,M1=255,I2=255,M2=255
7768 MCO:SLP:TPD
7770 MCO:SLP:WUP=-1
10898 MCO:SLP:MS=750,SMS=0,I1=255,M1=255,I2=255,M2=255
10902 MCO:SLP:TPD
10904 MCO:SLP:WUP=-1

[gohan]

I'm talking about adding code to your sketch so that it prints in serial monitor the values before they are sent for presentations and you debug from those, I can't debug it for you from here 😀

[Tim76]

@gohan oh.... ok..... pretty new at coding, but I guess you allready figured that out.....;-)

[gohan]

No problem, it's normal, everybody started from being new at coding.
For debugging add only 1 or 2 temp sensors and same for relays, work it out simple and then add more

[Tim76]

@gohan hey Gohan,
I will not be able to continue to work on my code till after the weekend....😑

[gohan]

No problem, I'm here anyway 😀

[Tim76]

@gohan
Due to work related schedule problems I won't be able to work on this code for a few weeks...... :angry:

[Newzwaver]

Did you get this working and if so can you share?

[bluezr1]

@newzwaver I'm curious aswell, been pounding my head all night trying to get a temperature and relay into one sketch.

[Newzwaver]

HI

I did get it to work and will post the sketch later today after work. I have it working on the ESP8266 and Arduino.

[Newzwaver]

I figured why wait, this has the temp, hum and 2 relays working not problem. One relay controls my fan for my AV and the other controls my doorbell for my HTD Lync system.

/**
 * 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.
 *
 *******************************
 *
 * REVISION HISTORY
 * Version 1.0: Henrik EKblad
 * Version 1.1 - 2016-07-20: Converted to MySensors v2.0 and added various improvements - Torben Woltjen (mozzbozz)
 * 
 * DESCRIPTION
 * This sketch provides an example of how to implement a humidity/temperature
 * sensor using a DHT11/DHT-22.
 *  
 * For more information, please visit:
 * http://www.mysensors.org/build/humidity
 * 
 */

// Enable debug prints
#define MY_DEBUG
#define MY_NODE_ID 29
// Enable and select radio type attached 
#define MY_RADIO_NRF24
//#define MY_RADIO_RFM69
//#define MY_RS485

// Enable repeater functionality for this node
#define MY_REPEATER_FEATURE


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

  
// Set this to the pin you connected the DHT's data pin to
#define DHT_DATA_PIN 3

#define RELAY_1  4  // Arduino Digital I/O pin number for first relay (second on pin+1 etc)
#define RELAY_2  5  // Arduino Digital I/O pin number for first relay (second on pin+1 etc)

#define NUMBER_OF_RELAYS 2 // Total number of attached relays
#define RELAY_ON 1  // GPIO value to write to turn on attached relay
#define RELAY_OFF 0 // GPIO value to write to turn off attached relay

// Set this offset if the sensor has a permanent small offset to the real temperatures
#define SENSOR_TEMP_OFFSET 0

// Sleep time between sensor updates (in milliseconds)
// Must be >1000ms for DHT22 and >2000ms for DHT11
static const uint64_t UPDATE_INTERVAL = 60000;

// Force sending an update of the temperature after n sensor reads, so a controller showing the
// timestamp of the last update doesn't show something like 3 hours in the unlikely case, that
// the value didn't change since;
// i.e. the sensor would force sending an update every UPDATE_INTERVAL*FORCE_UPDATE_N_READS [ms]
static const uint8_t FORCE_UPDATE_N_READS = 10;

#define CHILD_ID_HUM 28
#define CHILD_ID_TEMP 30

float lastTemp;
float lastHum;
uint8_t nNoUpdatesTemp;
uint8_t nNoUpdatesHum;
bool metric = true;

MyMessage msgHum(CHILD_ID_HUM, V_HUM);
MyMessage msgTemp(CHILD_ID_TEMP, V_TEMP);
DHT dht;
void before()
{
  for (int sensor=1, pin=RELAY_1; sensor<=NUMBER_OF_RELAYS; sensor++, pin++) {
    // Then set relay pins in output mode
    pinMode(pin, OUTPUT);
    // Set relay to last known state (using eeprom storage)
    digitalWrite(pin, loadState(sensor)?RELAY_ON:RELAY_OFF);
  }
}

void presentation()  
{ 
  // Send the sketch version information to the gateway
  sendSketchInfo("AVCABRelayTempAndHumidity", "1.1");

  // Register all sensors to gw (they will be created as child devices)
  present(CHILD_ID_HUM, S_HUM);
  present(CHILD_ID_TEMP, S_TEMP);

  metric = getControllerConfig().isMetric;
}


void setup()
{
  dht.setup(DHT_DATA_PIN); // set data pin of DHT sensor
  if (UPDATE_INTERVAL <= dht.getMinimumSamplingPeriod()) {
    Serial.println("Warning: UPDATE_INTERVAL is smaller than supported by the sensor!");
  }
  // Sleep for the time of the minimum sampling period to give the sensor time to power up
  // (otherwise, timeout errors might occure for the first reading)
  sleep(dht.getMinimumSamplingPeriod());
}


void receive(const MyMessage &message)     
{  
  // Force reading sensor, so it works also after sleep()
  dht.readSensor(true);

  // Get temperature from DHT library
  float temperature = dht.getTemperature();
  if (isnan(temperature)) {
    Serial.println("Failed reading temperature from DHT!");
  } else if (temperature != lastTemp || nNoUpdatesTemp == FORCE_UPDATE_N_READS) {
    // Only send temperature if it changed since the last measurement or if we didn't send an update for n times
    lastTemp = temperature;
    if (!metric) {
      temperature = dht.toFahrenheit(temperature);
    }
    // Reset no updates counter
    nNoUpdatesTemp = 0;
    temperature += SENSOR_TEMP_OFFSET;
    send(msgTemp.set(temperature, 1));

    #ifdef MY_DEBUG
    Serial.print("T: ");
    Serial.println(temperature);
    #endif
  } else {
    // Increase no update counter if the temperature stayed the same
    nNoUpdatesTemp++;
  }

  // Get humidity from DHT library
  float humidity = dht.getHumidity();
  if (isnan(humidity)) {
    Serial.println("Failed reading humidity from DHT");
  } else if (humidity != lastHum || nNoUpdatesHum == FORCE_UPDATE_N_READS) {
    // Only send humidity if it changed since the last measurement or if we didn't send an update for n times
    lastHum = humidity;
    // Reset no updates counter
    nNoUpdatesHum = 0;
    send(msgHum.set(humidity, 1));
  if (message.type==V_STATUS) {

    // Change relay state
    digitalWrite(message.sensor-1+RELAY_1, message.getBool()?RELAY_ON:RELAY_OFF);
    // Store state in eeprom
    saveState(message.sensor, message.getBool());
    #ifdef MY_DEBUG
    Serial.print("H: ");
    Serial.println(humidity);
    Serial.print("Incoming change for sensor:");
    Serial.print(message.sensor);
    Serial.print(", New status: ");
    Serial.println(message.getBool());
    #endif
  } else {
    // Increase no update counter if the humidity stayed the same
    nNoUpdatesHum++;
  }

  // Sleep for a while to save energy
  sleep(UPDATE_INTERVAL); 
  }}

[rejoe2]

@newzwaver your code is pretty hard to read due to not beeing entirely formatted as code.
Nevertheless there seems not to exist any loop() section and the node is put to sleep after having received anything for a certain periode of time.
This may work in most cases, but imo is not a "lucky code design".

Imo better aproach:
Use the https://www.arduino.cc/en/tutorial/BlinkWithoutDelay - principle. Additionally a wait() is used instead of sleep() for the time to fulfill measurements (DS18B20 in my case).
If you need a working implementation of the blink-without-delay function within MySensors, see the https://www.mysensors.org/build/pulse_power example.
At least three of my nodes (combining temperature and relays) work pretty well like that.

[bluezr1]

@rejoe2 said in Combining relay and temperature sketch:

Thanks Newzwaver

You wouldn't happen to have a sketch with the DS18B20? I have both DHTs and DS18B20s but plan on using this to turn on and off a fan to keep my AV equipment cool. So I'm not that concerned about humidity although it wouldn't be deal breaker if it did.

Thanks,

[rejoe2]

@bluezr1 Sure... But imo it is easier to stick with the given examples, they may be much easier to understand than e.g. this one:grin:

[sincze]

@rejoe2 NIce example thanks.

[rejoe2]

@sincze Thanks too.
Just to mention: I don't use the internal functionality for the servo any more - this part didn't work to my personal satisfaction.
If you're interested: The RS485 variant in the repo is even more complex - it uses three Pins for 1wire with different timings, but may require some tweeks in the libs to compile.

[bluezr1]

Thank you so much Newzwaver. I've been trying to combine two sketches together and this is my first successful one. I may never be as good as most of the people on this forum, although I don't plan on stopping with combining more than one sensor to one node -- need to get rid of my double nodes I have in various places. :)

When I ran your sketch and the relays didn't show up in vera. So after I copied and pasted from the relay sketch posted by hek under void presentation, I ended up with errors. So after comparing the two (yours to hek's) I ended up with this that seems to be working.

As of right now I'm looking into what rejoe2 said about using wait instead of sleep, unless I'll be fine with what I have?

/**
 * 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.
 *
 *******************************
 *
 * REVISION HISTORY
 * Version 1.0: Henrik EKblad
 * Version 1.1 - 2016-07-20: Converted to MySensors v2.0 and added various improvements - Torben Woltjen (mozzbozz)
 * 
 * DESCRIPTION
 * This sketch provides an example of how to implement a humidity/temperature
 * sensor using a DHT11/DHT-22.
 *  
 * For more information, please visit:
 * http://www.mysensors.org/build/humidity
 * 
 */

// Enable debug prints
#define MY_DEBUG

// Enable and select radio type attached 
#define MY_RADIO_NRF24
//#define MY_RADIO_RFM69
//#define MY_RS485

// Enable repeater functionality for this node
//#define MY_REPEATER_FEATURE

#define MY_NODE_ID 10
#include <SPI.h>
#include <MySensors.h>  
#include <DHT.h>

  
// Set this to the pin you connected the DHT's data pin to
#define DHT_DATA_PIN 3

//#define RELAY1_PIN  4  // Arduino Digital I/O pin number for first relay (second on pin+1 etc)
//#define RELAY2_PIN  5  // Arduino Digital I/O pin number for first relay (second on pin+1 etc)

#define RELAY_PIN 4  // Arduino Digital I/O pin number for first relay (second on pin+1 etc)
#define NUMBER_OF_RELAYS 2 // Total number of attached relays
#define RELAY_ON 1  // GPIO value to write to turn on attached relay
#define RELAY_OFF 0 // GPIO value to write to turn off attached relay

// Set this offset if the sensor has a permanent small offset to the real temperatures
#define SENSOR_TEMP_OFFSET 0

// Sleep time between sensor updates (in milliseconds)
// Must be >1000ms for DHT22 and >2000ms for DHT11
static const uint64_t UPDATE_INTERVAL = 1000;

// Force sending an update of the temperature after n sensor reads, so a controller showing the
// timestamp of the last update doesn't show something like 3 hours in the unlikely case, that
// the value didn't change since;
// i.e. the sensor would force sending an update every UPDATE_INTERVAL*FORCE_UPDATE_N_READS [ms]
static const uint8_t FORCE_UPDATE_N_READS = 10;

#define CHILD_ID_HUM 28
#define CHILD_ID_TEMP 30

float lastTemp;
float lastHum;
uint8_t nNoUpdatesTemp;
uint8_t nNoUpdatesHum;
bool metric = true;

MyMessage msgHum(CHILD_ID_HUM, V_HUM);
MyMessage msgTemp(CHILD_ID_TEMP, V_TEMP);
DHT dht;
void before()
{
    for (int sensor=1, pin=RELAY_PIN; sensor<=NUMBER_OF_RELAYS; sensor++, pin++) {
        // Then set relay pins in output mode
        pinMode(pin, OUTPUT);
        // Set relay to last known state (using eeprom storage)
        digitalWrite(pin, loadState(sensor)?RELAY_OFF:RELAY_ON);
    }
}

void presentation()  
{ 
  // Send the sketch version information to the gateway
  sendSketchInfo("AVCABRelayTempAndHumidity", "1.1");

  // Register all sensors to gw (they will be created as child devices)
  present(CHILD_ID_HUM, S_HUM);
  present(CHILD_ID_TEMP, S_TEMP);
  
    for (int sensor=1, pin=RELAY_PIN; sensor<=NUMBER_OF_RELAYS; sensor++, pin++) {
        // Register all sensors to gw (they will be created as child devices)
        present(sensor, S_BINARY);
    }

  metric = getControllerConfig().isMetric;
}


void setup()
{
  dht.setup(DHT_DATA_PIN); // set data pin of DHT sensor
  if (UPDATE_INTERVAL <= dht.getMinimumSamplingPeriod()) {
    Serial.println("Warning: UPDATE_INTERVAL is smaller than supported by the sensor!");
  }
  // Sleep for the time of the minimum sampling period to give the sensor time to power up
  // (otherwise, timeout errors might occure for the first reading)
  sleep(dht.getMinimumSamplingPeriod());
}

void loop()      
{
  // Force reading sensor, so it works also after sleep()
  dht.readSensor(true);

  // Get temperature from DHT library
  float temperature = dht.getTemperature();
  if (isnan(temperature)) {
    Serial.println("Failed reading temperature from DHT!");
  } else if (temperature != lastTemp || nNoUpdatesTemp == FORCE_UPDATE_N_READS) {
    // Only send temperature if it changed since the last measurement or if we didn't send an update for n times
    lastTemp = temperature;
    if (!metric) {
      temperature = dht.toFahrenheit(temperature);
    }
    // Reset no updates counter
    nNoUpdatesTemp = 0;
    temperature += SENSOR_TEMP_OFFSET;
    send(msgTemp.set(temperature, 1));

    #ifdef MY_DEBUG
    Serial.print("T: ");
    Serial.println(temperature);
    #endif
  } else {
    // Increase no update counter if the temperature stayed the same
    nNoUpdatesTemp++;
  }

  // Get humidity from DHT library
  float humidity = dht.getHumidity();
  if (isnan(humidity)) {
    Serial.println("Failed reading humidity from DHT");
  } else if (humidity != lastHum || nNoUpdatesHum == FORCE_UPDATE_N_READS) {
    // Only send humidity if it changed since the last measurement or if we didn't send an update for n times
    lastHum = humidity;
    // Reset no updates counter
    nNoUpdatesHum = 0;
    send(msgHum.set(humidity, 1));

    #ifdef MY_DEBUG
    Serial.print("H: ");
    Serial.println(humidity);
    #endif
  } else {
    // Increase no update counter if the humidity stayed the same
    nNoUpdatesHum++;
  }

  // Sleep for a while to save energy
  sleep(UPDATE_INTERVAL); 
}
  
void receive(const MyMessage &message)
{
    // We only expect one type of message from controller. But we better check anyway.
    if (message.type==V_STATUS) {
        // Change relay state
        digitalWrite(message.sensor-1+RELAY_PIN, message.getBool()?RELAY_OFF:RELAY_ON);
        // Store state in eeprom
        saveState(message.sensor, message.getBool());
        // Write some debug info
        Serial.print("Incoming change for sensor:");
        Serial.print(message.sensor);
        Serial.print(", New status: ");
        Serial.println(message.getBool());
    }
}```

[rejoe2]

@bluezr1 Great to hear about you having first positive results.

Nevertheless, imo the sketch you posted is designed against some basic principles.

First: all main functions should be placed in the loop() section (not present in this sketch). The posted sketch does all the measurements within an exceptional routine called receive(). This should be reserved for all functionality that really is related to receive any info from controller side - obviously doing measurements does not belong to that category.

I also started as complete noob to coding around 30 months ago and just followed the examples (mostly from Build section), so be assured: you will also learn how to do this just by following these examples and ask yourself why things are solved the way they are.

If you need a good example of a combined sketch, have a look at the atmospheric pressure one (or the DHT (humidity?) sketch you have used here): They already have two children... From the BME180-Preassure you may follow the route to the BME280 examples available in the forum here or in my repo (#98, RS485).

Btw: In the header section of your sketch there are also two defines left not necessary (just as a info, this does not cause any trouble for the moment).

[sincze]

haha combining sketches... frees up some hardware ;-) for other stuff.

[bluezr1]

@rejoe2 I listened to what you said and then went back over it, it's working much better now. What you said "why things are solved the way they are" made me stand back for a moment. I do Maintenance for a living and work on everything from HVAC, boilers, Kitchen equipment to hanging drywall. There's always one thing I always tell myself when troubleshooting something, what's the sequence of operation. Well I'm not to savvy with writing code although the same principles applies. Maybe I just needed someone to tell me that, I don't know.

Anyways, thank you

I updated the sketch I posted in my last post with the changes I made.