DHT12 + 2Relay + 2Button - Combining Problem

michlb1982

Hello
I tried to combine a DHT12 + 2 Relay incl. Buttons.
![alt text]( image url)
Well it works (somtimes longer.. sometimes not..), i combined the Scetches of both but often i have the problme, that the Relays don't act anymore and the buttons didn't either since the beginning...

i found something on google that i have to change the sleep to wait command so it works little better but after some time it also even quits working.

what is my mistake???

#define MY_DEBUG
#define MY_RADIO_NRF24
#define MY_REPEATER_FEATURE

#define RELAY_ON 1
#define RELAY_OFF 0

#define SSR_A_ID 1   // Id of the sensor child
#define SSR_B_ID 2   // Id of the sensor child

#define CHILD_ID_HUM 0
#define CHILD_ID_TEMP 0//1
#define SENSOR_TEMP_OFFSET 0

#include <SPI.h>
#include <MySensors.h>
#include <Bounce2.h>
#include <DHT12.h>
#include <Wire.h>
 
const int buttonPinA = 7;
const int buttonPinB = 8;
const int relayPinA = 6;
const int relayPinB = 5;
int oldValueA = 0;
int oldValueB = 0;
bool stateA = false;
bool stateB = false;

float lastTemp;
float lastHum;
uint8_t nNoUpdatesTemp;
uint8_t nNoUpdatesHum;
bool metric = true;
static const uint8_t FORCE_UPDATE_N_READS = 10;//10
static const uint64_t UPDATE_INTERVAL = 30000;//30000

Bounce debouncerA = Bounce();
Bounce debouncerB = Bounce();

MyMessage msgA(SSR_A_ID, V_STATUS);
MyMessage msgB(SSR_B_ID, V_STATUS);
MyMessage msgHum(CHILD_ID_HUM, V_HUM);
MyMessage msgTemp(CHILD_ID_TEMP, V_TEMP);

DHT12 dht12; 

void setup()
{
  //Serial.begin(115200);
  Wire.begin();
  pinMode(buttonPinA, INPUT_PULLUP); // Setup the button Activate internal pull-up
  pinMode(buttonPinB, INPUT_PULLUP); // Setup the button Activate internal pull-up


  // After setting up the buttons, setup debouncer
  debouncerA.attach(buttonPinA);
  debouncerA.interval(5); //5
  debouncerB.attach(buttonPinB);
  debouncerB.interval(5);//5

  // Make sure relays are off when starting up
  digitalWrite(relayPinA, RELAY_OFF);
  digitalWrite(relayPinB, RELAY_OFF);
  // Then set relay pins in output mode
  pinMode(relayPinA, OUTPUT);
  pinMode(relayPinB, OUTPUT);
  
}

void presentation()  {
  // Send the sketch version information to the gateway and Controller
  sendSketchInfo("2xRelais,2xButton,DHT12", "1.2");

  // Register all sensors to gw (they will be created as child devices)
  present(SSR_A_ID, S_LIGHT);
  present(SSR_B_ID, S_LIGHT);

  present(CHILD_ID_HUM, S_HUM);
  present(CHILD_ID_TEMP, S_TEMP);

  metric = getControllerConfig().isMetric;

}

/*
   Example on how to asynchronously check for new messages from gw
*/
void loop()
{
  debouncerA.update();
  // Get the update value
  int valueA = debouncerA.read();
  if (valueA != oldValueA) {
    send(msgA.set(stateA ? false : true), true); // Send new state and request ack back
  oldValueA = valueA;
  }
 

  debouncerB.update();
  // Get the update value
  int valueB = debouncerB.read();
  if (valueB != oldValueB) {
    send(msgB.set(stateB ? false : true), true); // Send new state and request ack back
  oldValueB = valueB;
  }

    
  // Force reading sensor, so it works also after sleep()
//  dht12.readSensor(true);

  // Get temperature from DHT library
  float temperature = dht12.readTemperature();
  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;

    // apply the offset before converting to something different than Celsius degrees
    temperature += SENSOR_TEMP_OFFSET;

    if (!metric) {
      temperature = dht12.readTemperature();
    }
    // Reset no updates counter
    nNoUpdatesTemp = 0;
    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 = dht12.readHumidity();
  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
  wait(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) {
      
    switch (message.sensor) {
      case 1:
        stateA = message.getBool();
        digitalWrite(message.sensor + 4, stateA ? RELAY_ON : RELAY_OFF);
        break;
      case 2:
        stateB = message.getBool();
        digitalWrite(message.sensor + 4, stateB ? RELAY_ON : RELAY_OFF);
        break;
    }
   
      // Write some debug info
    Serial.print("Incoming change for sensor:");
    Serial.println(message.sensor);
    //Serial.print("from node:");
    //Serial.println(message.sender);
    //Serial.print(", New status: ");
    Serial.println(message.getBool());
  }
}

Thanks for help!

mfalkvidd

@michlb1982 what does the debug log say?

rejoe2

Question: First all worked well, until you added the code for the DHT?
IMO, the

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

part blocks the entire code for most of the time. You should instead use a non-blocking loop structure using millis(). See the https://www.mysensors.org/build/pulse_power example (follow the path, when "#define SLEEP_MODE true" is used).

michlb1982

@rejoe2
thanks for the link.. i will try... and report if it worked..

michlb1982

Hello again.. long time ago.. but still here.

well thankss for the tip... but now i have a other problem...
the relay will work when the order comes from the gateway ... but when i press the button, nothing happens...
any ideas?

here the code:

#define MY_DEBUG
#define MY_RADIO_NRF24
#define MY_REPEATER_FEATURE

// Define Node ID
#define MY_NODE_ID 101

#define RELAY_ON 1
#define RELAY_OFF 0

#define SSR_A_ID 1   // Id of the sensor child
#define SSR_B_ID 2   // Id of the sensor child

#define CHILD_ID_HUM 0
#define CHILD_ID_TEMP 0//1
#define SENSOR_TEMP_OFFSET 0

#include <SPI.h>
#include <MySensors.h>
#include <Bounce2.h>
#include <DHT12.h>
#include <Wire.h>
 
const int buttonPinA = 7;
const int buttonPinB = 8;
const int relayPinA = 6;
const int relayPinB = 5;
int oldValueA = 0;
int oldValueB = 0;
bool stateA = false;
bool stateB = false;

float lastTemp;
float lastHum;
uint8_t nNoUpdatesTemp;
uint8_t nNoUpdatesHum;
bool metric = true;
static const uint8_t FORCE_UPDATE_N_READS = 10;//10
static const uint64_t UPDATE_INTERVAL = 30000;//30000

Bounce debouncerA = Bounce();
Bounce debouncerB = Bounce();

MyMessage msgA(SSR_A_ID, V_STATUS);
MyMessage msgB(SSR_B_ID, V_STATUS);
MyMessage msgHum(CHILD_ID_HUM, V_HUM);
MyMessage msgTemp(CHILD_ID_TEMP, V_TEMP);

DHT12 dht12; 

void setup()
{
  //Serial.begin(115200);
  Wire.begin();
  pinMode(buttonPinA, INPUT_PULLUP); // Setup the button Activate internal pull-up
  pinMode(buttonPinB, INPUT_PULLUP); // Setup the button Activate internal pull-up


  // After setting up the buttons, setup debouncer
  debouncerA.attach(buttonPinA);
  debouncerA.interval(5); //5
  debouncerB.attach(buttonPinB);
  debouncerB.interval(5);//5

  // Make sure relays are off when starting up
  digitalWrite(relayPinA, RELAY_OFF);
  digitalWrite(relayPinB, RELAY_OFF);
  // Then set relay pins in output mode
  pinMode(relayPinA, OUTPUT);
  pinMode(relayPinB, OUTPUT);
  
}

void presentation()  {
  // Send the sketch version information to the gateway and Controller
  sendSketchInfo("2xRelais,2xButton,DHT12", "1.2");

  // Register all sensors to gw (they will be created as child devices)
  present(SSR_A_ID, S_LIGHT);
  present(SSR_B_ID, S_LIGHT);

  present(CHILD_ID_HUM, S_HUM);
  present(CHILD_ID_TEMP, S_TEMP);

  metric = getControllerConfig().isMetric;

}

/*
   Example on how to asynchronously check for new messages from gw
*/
void loop()
{
  debouncerA.update();
  // Get the update value
  int valueA = debouncerA.read();
  if (valueA != oldValueA) {
    send(msgA.set(stateA ? false : true), true); // Send new state and request ack back
  oldValueA = valueA;
  }
 

  debouncerB.update();
  // Get the update value
  int valueB = debouncerB.read();
  if (valueB != oldValueB) {
    send(msgB.set(stateB ? false : true), true); // Send new state and request ack back
  oldValueB = valueB;
  }

    
  // Force reading sensor, so it works also after sleep()
//  dht12.readSensor(true);

  // Get temperature from DHT library
  float temperature = dht12.readTemperature();
  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;

    // apply the offset before converting to something different than Celsius degrees
    temperature += SENSOR_TEMP_OFFSET;

    if (!metric) {
      temperature = dht12.readTemperature();
    }
    // Reset no updates counter
    nNoUpdatesTemp = 0;
    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 = dht12.readHumidity();
  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
  wait(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) {
      
    switch (message.sensor) {
      case 1:
        stateA = message.getBool();
        digitalWrite(message.sensor + 4, stateA ? RELAY_ON : RELAY_OFF);
        break;
      case 2:
        stateB = message.getBool();
        digitalWrite(message.sensor + 4, stateB ? RELAY_ON : RELAY_OFF);
        break;
    }
   
      // Write some debug info
    Serial.print("Incoming change for sensor:");
    Serial.println(message.sensor);
    //Serial.print("from node:");
    //Serial.println(message.sender);
    //Serial.print(", New status: ");
    Serial.println(message.getBool());
  }
}

mfalkvidd

@michlb1982 there are no digitalWrite commands in the loop. Withiut digitalWrite, there will be no changes to the relay.

michlb1982

@mfalkvidd you are right, but in the original Relay-Scetch there is also no digitalWrite command in the loop-section... https://www.mysensors.org/build/relay
only in the viod receive message section is a digitalwrite command....

there is also another problmem...sometimes (i can't say when) there is the RElay not working or works lately.. .maybe it is when the DHT is measuring? i can't explain...

mfalkvidd

@michlb1982 yes you are right, sorry for the confusion. The relay will be switched when the node receives ack for the outgoing message.

Looking at the debug logs (from node and gateway) will probably be the quickest way to figure out what is wrong.

michlb1982

well i can't find anything strange in the node debug messages..

90243 TSF:MSG:READ,0-0-101,s=2,c=1,t=2,pt=0,l=1,sg=0:1
08:25:35.541 -> Incoming change for sensor:2
08:25:35.541 -> 1
92163 TSF:MSG:READ,0-0-101,s=1,c=1,t=2,pt=0,l=1,sg=0:0
08:25:37.478 -> Incoming change for sensor:1
08:25:37.478 -> 0
92843 TSF:MSG:READ,0-0-101,s=2,c=1,t=2,pt=0,l=1,sg=0:0
08:25:38.139 -> Incoming change for sensor:2
08:25:38.139 -> 0
93059 TSF:MSG:READ,0-0-101,s=2,c=1,t=2,pt=0,l=1,sg=0:1
08:25:38.375 -> Incoming change for sensor:2
08:25:38.375 -> 1
93458 TSF:MSG:READ,0-0-101,s=2,c=1,t=2,pt=0,l=1,sg=0:0
08:25:38.769 -> Incoming change for sensor:2
08:25:38.769 -> 0
93674 TSF:MSG:READ,0-0-101,s=2,c=1,t=2,pt=0,l=1,sg=0:1
08:25:38.963 -> Incoming change for sensor:2
08:25:39.003 -> 1
94012 TSF:MSG:READ,0-0-101,s=2,c=1,t=2,pt=0,l=1,sg=0:0
08:25:39.315 -> Incoming change for sensor:2
08:25:39.315 -> 0
94229 TSF:MSG:READ,0-0-101,s=2,c=1,t=2,pt=0,l=1,sg=0:1
08:25:39.524 -> Incoming change for sensor:2
08:25:39.557 -> 1
94721 TSF:MSG:READ,0-0-101,s=2,c=1,t=2,pt=0,l=1,sg=0:0
08:25:40.049 -> Incoming change for sensor:2
08:25:40.049 -> 0
94893 TSF:MSG:SEND,101-101-0-0,s=0,c=1,t=0,pt=7,l=5,sg=0,ft=0,st=OK:23.5
08:25:40.213 -> T: 23.50
94973 TSF:MSG:SEND,101-101-0-0,s=0,c=1,t=1,pt=7,l=5,sg=0,ft=0,st=OK:40.6
08:25:40.284 -> H: 40.60
08:25:40.284 -> 94981 TSF:MSG:READ,0-0-101,s=2,c=1,t=2,pt=0,l=1,sg=0:1
08:25:40.284 -> Incoming change for sensor:2
08:25:40.284 -> 1
95182 TSF:MSG:READ,0-0-101,s=2,c=1,t=2,pt=0,l=1,sg=0:0
08:25:40.495 -> Incoming change for sensor:2
08:25:40.495 -> 0
95396 TSF:MSG:READ,0-0-101,s=2,c=1,t=2,pt=0,l=1,sg=0:1
08:25:40.702 -> Incoming change for sensor:2
08:25:40.702 -> 1
97184 TSF:MSG:READ,0-0-101,s=1,c=1,t=2,pt=0,l=1,sg=0:1
08:25:42.505 -> Incoming change for sensor:1
08:25:42.505 -> 1
97225 TSF:MSG:READ,0-0-101,s=1,c=1,t=2,pt=0,l=1,sg=0:1
08:25:42.547 -> Incoming change for sensor:1
08:25:42.547 -> 1

and the acting time delay is only sometimes... i don't know jet how to reproduce it....
ok with the time delay i can live... but the buttons would be great if the could work...
any ideas left?

mfalkvidd

@michlb1982 when/how many times did you press the button?

There are no send commands in the log, so the button press was never registered.

mfalkvidd

Now I see. During the 30 second wait, no button presses will be registered. You’ll need to use interrupts, or modify the code to not use wait/sleep in the loop.

This is what rejoe2 mentioned in https://forum.mysensors.org/post/93454

michlb1982

@mfalkvidd you are so right!!! the "wait" is the problem... i changed the script.. i use a if to check if the update-interval is over and then i go through the dht loop....
now the bounce are also working..!

here my code...

#define MY_DEBUG
#define MY_RADIO_NRF24
//#define MY_REPEATER_FEATURE

// Define Node ID
#define MY_NODE_ID 101

#define RELAY_ON 1
#define RELAY_OFF 0

#define SSR_A_ID 1   // Id of the sensor child
#define SSR_B_ID 2   // Id of the sensor child

#define CHILD_ID_HUM 0
#define CHILD_ID_TEMP 0//1
#define SENSOR_TEMP_OFFSET 0

#include <SPI.h>
#include <MySensors.h>
#include <Bounce2.h>
#include <DHT12.h>
#include <Wire.h>
 
const int buttonPinA = 7;
const int buttonPinB = 8;
const int relayPinA = 6;
const int relayPinB = 5;
int oldValueA = 0;
int oldValueB = 0;
unsigned long startMillis;
unsigned long currentMillis;

bool stateA = false;
bool stateB = false;

float lastTemp;
float lastHum;
uint8_t nNoUpdatesTemp;
uint8_t nNoUpdatesHum;
bool metric = true;
static const uint8_t FORCE_UPDATE_N_READS = 10;//10
static const uint64_t UPDATE_INTERVAL = 30000;//30000


Bounce debouncerA = Bounce();
Bounce debouncerB = Bounce();

MyMessage msgA(SSR_A_ID, V_STATUS);
MyMessage msgB(SSR_B_ID, V_STATUS);
MyMessage msgHum(CHILD_ID_HUM, V_HUM);
MyMessage msgTemp(CHILD_ID_TEMP, V_TEMP);

DHT12 dht12; 

void setup()
{
  //Serial.begin(115200);
  Wire.begin();
  pinMode(buttonPinA, INPUT_PULLUP); // Setup the button Activate internal pull-up
  pinMode(buttonPinB, INPUT_PULLUP); // Setup the button Activate internal pull-up



  // After setting up the buttons, setup debouncer
  debouncerA.attach(buttonPinA);
  debouncerA.interval(5); //5
  debouncerB.attach(buttonPinB);
  debouncerB.interval(5);//5

  // Make sure relays are off when starting up
  digitalWrite(relayPinA, RELAY_ON);
  digitalWrite(relayPinB, RELAY_ON);
  // Then set relay pins in output mode
  pinMode(relayPinA, OUTPUT);
  pinMode(relayPinB, OUTPUT);
}

void presentation()  {
  // Send the sketch version information to the gateway and Controller
  sendSketchInfo("2xRelais,2xButton,DHT12", "1.2a");

  // Register all sensors to gw (they will be created as child devices)
  present(SSR_A_ID, S_LIGHT);
  present(SSR_B_ID, S_LIGHT);

  present(CHILD_ID_HUM, S_HUM);
  present(CHILD_ID_TEMP, S_TEMP);

  metric = getControllerConfig().isMetric;

}

/*
   Example on how to asynchronously check for new messages from gw
*/
void loop()
{
  currentMillis = millis();
  debouncerA.update();
  // Get the update value
  int valueA = debouncerA.read();
  if (valueA != oldValueA) {
    send(msgA.set(stateA ? false : true), true); // Send new state and request ack back
  oldValueA = valueA;
  }
 

  debouncerB.update();
  // Get the update value
  int valueB = debouncerB.read();
  if (valueB != oldValueB) {
    send(msgB.set(stateB ? false : true), true); // Send new state and request ack back
  oldValueB = valueB;
  }

    
  // Force reading sensor, so it works also after sleep()
//  dht12.readSensor(true);
  if (currentMillis - startMillis >= UPDATE_INTERVAL) 
  {
  // Get temperature from DHT library
  float temperature = dht12.readTemperature();
  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;

    // apply the offset before converting to something different than Celsius degrees
    temperature += SENSOR_TEMP_OFFSET;

    if (!metric) {
      temperature = dht12.readTemperature();
    }
    // Reset no updates counter
    nNoUpdatesTemp = 0;
    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 = dht12.readHumidity();
  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++;
  }
  startMillis = currentMillis;
  Serial.print("Startzeit: ");
  Serial.println(startMillis);
  }
  // Sleep for a while to save energy
  //wait(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) {
      
    switch (message.sensor) {
      case 1:
        stateA = message.getBool();
        digitalWrite(message.sensor + 4, stateA ? RELAY_ON : RELAY_OFF);
        break;
      case 2:
        stateB = message.getBool();
        digitalWrite(message.sensor + 4, stateB ? RELAY_ON : RELAY_OFF);
        break;
    }
   
      // Write some debug info
    Serial.print("Incoming change for sensor:");
    Serial.println(message.sensor);
    //Serial.print("from node:");
    //Serial.println(message.sender);
    //Serial.print(", New status: ");
    Serial.println(message.getBool());
  }
}

mfalkvidd

@michlb1982 great work, thanks for reporting back

rejoe2

@michlb1982 Congratulations also from my side !

One additional remark: In case you want to use more relays and buttons, you may hav a closer look to the use of array functions. Good, but rather complex example: https://forum.mysensors.org/post/51488

DHT12 + 2Relay + 2Button - Combining Problem

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