Cobine working DHT22 and LDR with a RelayWithButtonActuator

Dick

thank you Alex, it did not work. It is strange, in my topic BartE posted a srcipt what workerd almost perfect. Relay change was good and saw it in the Serial minitor changing from 0 to 1. after adding the LDR stuff it went wrong. So it must be something in the LDR add-on. combining is still not easy for me but I am learning.

alexsh1

@Dick With sketches it is like this sometimes - troubleshooting is time consuming.
I would suggest the following. Try to comment out line by line on the LDR code, upload and see if it works. Try to insert as many Serial.print as you could to print the status of variables to the serial port.

I do not have the LDR so cannot help you much on this one. I have multiple other sketches combined together working just fine.

Dick

@alexsh1
That could I do, thanks for the tip and will do that today. Any idea is welcome :smiley:

BartE

@Dick I think this issue sits here you use Digital port 0 (which is the serial debug port) i.s.o. Analog port 0 (A0).

Change this line

 #define LIGHT_SENSOR_ANALOG_PIN 0

to

 #define LIGHT_SENSOR_ANALOG_PIN A0

And you better also add this line to the setup function

pinMode(LIGHT_SENSOR_ANALOG_PIN, INPUT);

Dick

have not tried all the given options but started again with all the previous advises of Bart. Noe I still struggle with an error
"gw.begin(incomingMessage, AUTO, true);" in mij script. I checkt the "{ }" over and over again but it must be something else.
can anybody take a look?

#include <SPI.h>
 #include <MySensor.h>
 #include <DHT.h>
 #include <Bounce2.h>

#define CHILD_ID_HUM1 0
 #define CHILD_ID_HUM2 1
 #define CHILD_ID_TEMP1 3
 #define CHILD_ID_TEMP2 4

#define CHILD_ID_LIGHT 0
 #define LIGHT_SENSOR_ANALOG_PIN A0

// RelayWithActuator stuff
 #define RELAY_PIN 5 // Arduino Digital I/O pin number for relay
 #define BUTTON_PIN 6 // Arduino Digital I/O pin number for button
 #define CHILD_ID 5 // Id of the sensor child
 #define RELAY_ON 1
 #define RELAY_OFF 0
 Bounce debouncer = Bounce();
 
int oldValue=0;

 bool state;
 MySensor gw;
MyMessage msgLight(CHILD_ID,V_LIGHT);
MyMessage msgLightLevel(CHILD_ID_LIGHT, V_LIGHT_LEVEL);
 int lastLightLevel;

#define HEARTBEAT 10
 unsigned int timer = 0;
 // Sleep time between reads (in milliseconds)
 #define SLEEP_TIME 3000

DHT* dht[2];
 byte sensorPin[2] = {3, 4};
 float lastTemp[2] = {0.0, 0.0};
 float lastHum[2] = {0.0, 0.0};

boolean metric = true;
//MyMessage msgHum(CHILD_ID_HUM1, V_HUM);
//MyMessage msgTemp(CHILD_ID_TEMP1, V_TEMP);

void setup()
 {

gw.begin(incomingMessage, AUTO, true);
 
 gw.sendSketchInfo("HumidityAndRelay", "1.0");
 
 for (int i = 0; i < 2; i++)
 {
 dht[i] = new DHT;
 dht[i]->setup(sensorPin[i]);
 }



gw.present(CHILD_ID_HUM1, S_HUM);
 gw.present(CHILD_ID_HUM2, S_HUM);
 gw.present(CHILD_ID_TEMP1, S_TEMP);
 gw.present(CHILD_ID_TEMP1, S_TEMP);

// Setup the button and Activate internal pull-up
 pinMode(BUTTON_PIN,INPUT);
// Activate internal pull-up
  digitalWrite(BUTTON_PIN,HIGH);


// After setting up the button, setup debouncer
 debouncer.attach(BUTTON_PIN);
 debouncer.interval(5);

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

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

 pinMode(LIGHT_SENSOR_ANALOG_PIN, INPUT);

// Set relay to last known state (using eeprom storage)
 state = gw.loadState(CHILD_ID);
 digitalWrite(RELAY_PIN, state?RELAY_ON:RELAY_OFF);

timer = 0;
 metric = gw.getConfig().isMetric;
 }
 
void loop()
 {
 gw.process();
 timer++;

if (timer > (SLEEP_TIME / HEARTBEAT))
 {
 // Reset timer again and for the next timed loop
 timer = 0;
 for (int i = 0; i < 2; i++)
 {
 delay(dht[i]->getMinimumSamplingPeriod());
 float temperature = dht[i]->getTemperature();
 if (isnan(temperature))
 {
 Serial.print(F("Failed reading temperature from DHT"));
 Serial.println(i);
 }
 else if (temperature != lastTemp[i])
 {
 lastTemp[i] = temperature;
 if (!metric)
 {
 temperature = dht[i]->toFahrenheit(temperature);
 }
//gw.send(msgTemp.set(temperature, i));
 Serial.print(F("T"));
 Serial.print(i);
 Serial.print(F("= "));
 Serial.println(temperature);
 }
 float humidity = dht[i]->getHumidity();
 if (isnan(humidity))
 {
 Serial.print("Failed reading humidity from DHT");
 Serial.println(i);
 }
 else if (humidity != lastHum[i])
 {
 lastHum[i] = humidity;
//gw.send(msgHum.set(humidity, 1));
 Serial.print(F("H"));
 Serial.print(i);
 Serial.print(F("= "));
 Serial.println(humidity);
 }

int lightLevel = (1023-analogRead(LIGHT_SENSOR_ANALOG_PIN))/10.23;
//Serial.println(lightLevel);
 if (lightLevel != lastLightLevel) 
 {
gw.send(msgLightLevel.set(lightLevel));
  //lastLightLevel = lightLevel;
  Serial.print("L=");
  
  Serial.println(lightLevel);

 }

  
}




debouncer.update();
  // Get the update value
  int value = debouncer.read();
  if (value != oldValue && value==0) 
  
  {
      gw.send(msg.set(state?false:true), true); // Send new state and request ack back
  }
  
  oldValue = value;
} 


gw.wait(HEARTBEAT); //sleep a bit
 }
 }

void incomingMessage(const MyMessage &message) 
{
 // We only expect one type of message from controller. But we better check anyway.
 if (message.isAck()) 
 {
 Serial.println("This is an ack from gateway");
 }

if (message.type == V_LIGHT) 
{
 // Change relay state
 state = message.getBool();
 digitalWrite(RELAY_PIN, state?RELAY_ON:RELAY_OFF);
 // Store state in eeprom
 gw.saveState(CHILD_ID, state);
 // Write some debug info
 Serial.print("Incoming change for sensor:");
 Serial.print(message.sensor);
 Serial.print(", New status: ");
 Serial.println(message.getBool());


}

mfalkvidd

The auto-formatting feature in the Arduino IDE is very useful for makin the code easier to read (both for yourself and for us forum readers) and spot mistakes.

What is the error message you are getting?

Dick

three errors. hope you can give an advise!

In function 'void loop()':

laatste:163: error: 'msg' was not declared in this scope

   gw.send(msg.set(state?false:true), true); // Send new state and request ack back

At global scope:

laatste:172: error: expected declaration before '}' token

In function 'void setup()':

laatste:47: error: 'incomingMessage' was not declared in this scope

gw.begin(incomingMessage, AUTO, true);

BartE

@Dick
laatste:163: error: 'msg' was not declared in this scope

msg should become msgLight

gw.send(msgLight.set(state ? false : true), true); // Send new state and request ack back

and move one } just below this line

gw.wait(HEARTBEAT); //sleep a bit
}
}

to the very end of you sketch

Dick

no errors anymore. I test the script now and will also put the changes you posted befor.

Dick

tested and also add the changes of your message (9hrs ago).
What I see on the serial monitor is, temp (2x), hum (2x) and light level but nothing of the relay. it is still clicking but no change in the logging from 1 to 0 etc. I already adjusted the script this morning with the 'RelayWithButtonActuator Example'. so only the relay part is not working and not visible in the serial log. Any idea?

BartE

@Dick are you sure it's not a hardware (wire) issue?

What happens if you load the RelayWithButtonActuator example code (with the correct pinning of course) ?

Dick

here the latist version but not working

#include <SPI.h>
 #include <MySensor.h>
 #include <DHT.h>
 #include <Bounce2.h>

#define CHILD_ID_HUM1 0
 #define CHILD_ID_HUM2 1
 #define CHILD_ID_TEMP1 3
 #define CHILD_ID_TEMP2 4

#define CHILD_ID_LIGHT 0
 #define LIGHT_SENSOR_ANALOG_PIN A0

// RelayWithActuator stuff
 #define RELAY_PIN 5 // Arduino Digital I/O pin number for relay
 #define BUTTON_PIN 6 // Arduino Digital I/O pin number for button
 #define CHILD_ID 5 // Id of the sensor child
 #define RELAY_ON 1
 #define RELAY_OFF 0
 Bounce debouncer = Bounce();
 
int oldValue=0;

 bool state;
 MySensor gw;
MyMessage msgLight(CHILD_ID,V_LIGHT);
MyMessage msgLightLevel(CHILD_ID_LIGHT, V_LIGHT_LEVEL);
 int lastLightLevel;

#define HEARTBEAT 10
 unsigned int timer = 0;
 // Sleep time between reads (in milliseconds)
 #define SLEEP_TIME 3000

DHT* dht[2];
 byte sensorPin[2] = {3, 4};
 float lastTemp[2] = {0.0, 0.0};
 float lastHum[2] = {0.0, 0.0};

boolean metric = true;
//MyMessage msgHum(CHILD_ID_HUM1, V_HUM);
//MyMessage msgTemp(CHILD_ID_TEMP1, V_TEMP);

void setup()
 {

gw.begin(incomingMessage, AUTO, true);
 
 gw.sendSketchInfo("HumidityAndRelay", "1.0");
 
 for (int i = 0; i < 2; i++)


 
 {
 dht[i] = new DHT;
 dht[i]->setup(sensorPin[i]);
 }



gw.present(CHILD_ID_HUM1, S_HUM);
 gw.present(CHILD_ID_HUM2, S_HUM);
 gw.present(CHILD_ID_TEMP1, S_TEMP);
 gw.present(CHILD_ID_TEMP1, S_TEMP);

// Setup the button and Activate internal pull-up
 pinMode(BUTTON_PIN,INPUT);
// Activate internal pull-up
  digitalWrite(BUTTON_PIN,HIGH);

  pinMode(LIGHT_SENSOR_ANALOG_PIN, INPUT);


// After setting up the button, setup debouncer
 debouncer.attach(BUTTON_PIN);
 debouncer.interval(5);

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

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

 pinMode(LIGHT_SENSOR_ANALOG_PIN, INPUT);

// Set relay to last known state (using eeprom storage)
 state = gw.loadState(CHILD_ID);
 digitalWrite(RELAY_PIN, state?RELAY_ON:RELAY_OFF);

timer = 0;
 metric = gw.getConfig().isMetric;
 }
 
void loop()
 {
 gw.process();
 timer++;

if (timer > (SLEEP_TIME / HEARTBEAT))
 {
 // Reset timer again and for the next timed loop
 timer = 0;
 for (int i = 0; i < 2; i++)
 {
 delay(dht[i]->getMinimumSamplingPeriod());
 float temperature = dht[i]->getTemperature();
 if (isnan(temperature))
 {
 Serial.print(F("Failed reading temperature from DHT"));
 Serial.println(i);
 }
 else if (temperature != lastTemp[i])
 {
 lastTemp[i] = temperature;
 if (!metric)
 {
 temperature = dht[i]->toFahrenheit(temperature);
 }
//gw.send(msgTemp.set(temperature, i));
 Serial.print(F("T"));
 Serial.print(i);
 Serial.print(F("= "));
 Serial.println(temperature);
 }
 float humidity = dht[i]->getHumidity();
 if (isnan(humidity))
 {
 Serial.print("Failed reading humidity from DHT");
 Serial.println(i);
 }
 else if (humidity != lastHum[i])
 {
 lastHum[i] = humidity;
//gw.send(msgHum.set(humidity, 1));
 Serial.print(F("H"));
 Serial.print(i);
 Serial.print(F("= "));
 Serial.println(humidity);
 }

int lightLevel = (1023-analogRead(LIGHT_SENSOR_ANALOG_PIN))/10.23;
//Serial.println(lightLevel);
 if (lightLevel != lastLightLevel) 
 {
gw.send(msgLightLevel.set(lightLevel));
  //lastLightLevel = lightLevel;
  Serial.print("L=");
  
  Serial.println(lightLevel);

 }

  
}




debouncer.update();
  // Get the update value
  int value = debouncer.read();
  if (value != oldValue && value==0) 
  
  {
      gw.send(msgLight.set(state ? false : true), true); // Send new state and request ack back
  }
  
  oldValue = value;
 


gw.wait(HEARTBEAT); //sleep a bit
 }
 }

void incomingMessage(const MyMessage &message) 
{
 // We only expect one type of message from controller. But we better check anyway.
 if (message.isAck()) 
 {
 Serial.println("This is an ack from gateway");
 }

if (message.type == V_LIGHT) 
{
 // Change relay state
 state = message.getBool();
 digitalWrite(RELAY_PIN, state?RELAY_ON:RELAY_OFF);
 // Store state in eeprom
 gw.saveState(CHILD_ID, state);
 // Write some debug info
 Serial.print("Incoming change for sensor:");
 Serial.print(message.sensor);
 Serial.print(", New status: ");
 Serial.println(message.getBool());


}

}

BartE

@Dick

Change these lines

    oldValue = value;
    gw.wait(HEARTBEAT); //sleep a bit
  }
}

to

    oldValue = value;
  }
  gw.wait(HEARTBEAT); //sleep a bit
}

Dick

and about the test of the RelayWithButtonActuator Example,
it works fine. I adjust the lines now and will test it

Dick

tested but still clicking relay. As you can see that there is nothing to see in the serial log

send: 4-4-0-0 s=255,c=3,t=15,pt=2,l=2,sg=0,st=ok:0
send: 4-4-0-0 s=255,c=0,t=18,pt=0,l=5,sg=0,st=ok:1.5.4
send: 4-4-0-0 s=255,c=3,t=6,pt=1,l=1,sg=0,st=ok:0
read: 0-0-4 s=255,c=3,t=6,pt=0,l=1,sg=0:M
repeater started, id=4, parent=0, distance=1
send: 4-4-0-0 s=255,c=3,t=11,pt=0,l=16,sg=0,st=ok:HumidityAndRelay
send: 4-4-0-0 s=255,c=3,t=12,pt=0,l=3,sg=0,st=ok:1.0
send: 4-4-0-0 s=0,c=0,t=7,pt=0,l=0,sg=0,st=ok:
send: 4-4-0-0 s=1,c=0,t=7,pt=0,l=0,sg=0,st=ok:
send: 4-4-0-0 s=3,c=0,t=6,pt=0,l=0,sg=0,st=ok:
send: 4-4-0-0 s=3,c=0,t=6,pt=0,l=0,sg=0,st=ok:
send: 4-4-0-0 s=5,c=0,t=3,pt=0,l=0,sg=0,st=ok:
T0= 22.20
H0= 61.80
send: 4-4-0-0 s=0,c=1,t=23,pt=2,l=2,sg=0,st=ok:74
L=74
T1= 25.00
H1= 60.20
send: 4-4-0-0 s=0,c=1,t=23,pt=2,l=2,sg=0,st=ok:74
L=74
send: 4-4-0-0 s=0,c=1,t=23,pt=2,l=2,sg=0,st=ok:74
L=74
send: 4-4-0-0 s=0,c=1,t=23,pt=2,l=2,sg=0,st=ok:76
L=76

BartE

@Dick If there is nothing visible in the log, then you can presume there is a hardware issue.

Some possible issues:

loose relays wire (bad connection) --> try a different wire
wrong pin is used (if set as input the pin will "float" resulting in unstable relay behaviour) --> double check your pin number in code and actual PCB
pin double used ie the DHT drive poll this pin for some reason. --> use a different pin in both code and conection to relay

Dick

thank you BartE, I received today an new Uno and some other stuff so I can rebuild it al to see if it is an HW failure. I hope I can start tomorrow. I keep you informed but thanks for your support. to be continued.

BartE

@Dick Not sure what your approach is but normally i start with prototyping using these wires and when all works fine (software and hardware) i solder everything together on a PCB.

Cobine working DHT22 and LDR with a RelayWithButtonActuator

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