Cobine working DHT22 and LDR with a RelayWithButtonActuator

BartE

@Dick
Couple of remarks

This peice of code tries to declare the same variable twice (msg)

MyMessage msg(CHILD_ID,V_LIGHT);
MyMessage msg(CHILD_ID_LIGHT, V_LIGHT_LEVEL);

change to name to msgLight and msgLightLeven

MyMessage msgLight(CHILD_ID,V_LIGHT);
MyMessage msgLightLevel(CHILD_ID_LIGHT, V_LIGHT_LEVEL);

You also have to changethis line:

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

to this

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

Also this line

gw.send(msg.set(lightLevel));

needs to be adapted to

gw.send(msgLightLevel.set(lightLevel));

And i think the last } needs to be removed
Oh and please use the code mark up function for posting source code
(by using the </> icon)

Dick

thank you Bart, I am learning with these adjustment, how things work together aso. I change the code as you mentioned and still getting verifying errors as included. I hope you can help me so I can finish this, for me not so easy project.

E:\Arduino Projects\tempHumand_relay\tempHumand_relay.ino: In function 'void setup()':

tempHumand_relay:43: error: 'incomingMessage' was not declared in this scope

gw.begin(incomingMessage, AUTO, true);

E:\Arduino Projects\tempHumand_relay\tempHumand_relay.ino: In function 'void loop()':

tempHumand_relay:130: error: 'msgLightLevel' was not declared in this scope

   gw.send(msgLightLevel.set(lightLevel));

           ^

tempHumand_relay:145: error: 'msgLight' was not declared in this scope

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

           ^

tempHumand_relay:151: error: a function-definition is not allowed here before '{' token

void incomingMessage(const MyMessage &message) {

tempHumand_relay:170: error: expected '}' at end of input

}

'incomingMessage' was not declared in this scope

Dick

does anyone know how to go on with the final part of this project?

Dick

Compilation finished without errors.
but I sea nothing on my serial monitor. What could be the issue?The script is now

#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 0
// RelayWithActuator stuff
#define RELAY_PIN 5 // Arduino Digital I/O pin number for relay
#define BUTTON_PIN A1 // 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();
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_PULLUP);
// 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);
// 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, );
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);



  
}
}
// Get the button update state (true if a change was detected)
if (debouncer.update() && debouncer.read() == 0) {
gw.send(msgLight.set(state?false:true), true); // Send new state and request ack back
}
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

Is DEBUG enabled in MyConfig.h? If it isn't, you'll see nothing from MySensors on the serial monitor.
If you want your own serial prints to be visible, you need to run

Serial.begin(9600);

(or whatever speed you want to use in the Serial Monitor) inside setup().

You have commented out gw.begin. That means MySensors will not be started. If you don't want to handle incoming messages yet, you can use

gw.begin();

Dick

debug is enabled and I change gw.begin () and it worked, I see temp and two hum mesurements. But also my relay is uncontroling switching every secunds and the changing is not visible in the monitoring window. has that something to do with the
gw.begin(incomming
change?

mfalkvidd

Try commenting out

state = gw.loadState(CHILD_ID);

until you are ready to handle incoming messages.

Dick

I did what you suggested but no result. Perhaps I have to split-up the project into my initial plan (ldr, and 2x temp/Hum) and make another node for the relay because I do not know to solve the current issue.

alexsh1

Try to define BUTTON_PIN to a digital pin and see if it makes a difference.
Change the following in the setup

pinMode(BUTTON_PIN, INPUT);
digitalWrite(BUTTON_PIN, HIGH);

This is my sketch working on arduino+relay on my corner stand lamp and it is working fine on MySensors 1.5.4

// This code is basically the same as the default RelayWithButtonActuator sketch. The only difference is the pin numbering.

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

#define RELAY_PIN  3  // Arduino Digital I/O pin number for relay 
#define BUTTON_PIN  4  // Arduino Digital I/O pin number for button 
#define CHILD_ID 1   // Id of the sensor child
#define RELAY_ON 1
#define RELAY_OFF 0
#define NODE_ADDRESS 2

Bounce debouncer = Bounce(); 
int oldValue=0;
bool state;
MySensor gw;
MyMessage msg(CHILD_ID,V_LIGHT);

void setup()  
{  
  gw.begin(incomingMessage, NODE_ADDRESS, true);

  // Send the sketch version information to the gateway and Controller
  gw.sendSketchInfo("Relay & Button", "1.0");

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


/*
*  Example on how to asynchronously check for new messages from gw
*/
void loop() 
{
  gw.process();
  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;
} 
 
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());
   } 
}

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) ?

Cobine working DHT22 and LDR with a RelayWithButtonActuator

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