@BulldogLowell said:

are examples on the forum on multiple relays on one MCU... try searching the forum.

yes i see but with dth 22 it's difficult
i use simpletimer.h with this

Hello

i have a sketch with dth22 motion and relay

it's not optimal but it works

i want to add another relay but it doesn't work have you a soluce

thanks

#include <MySensor.h>
#include <DHT.h>
#include <SimpleTimer.h>

#define CHILD_ID_HUM 1
#define CHILD_ID_TEMP 2
#define CHILD_ID_MOTION 3
#define CHILD_ID_RELAY 4

#define MOTION_SENSOR_DIGITAL_PIN 3
#define HUMIDITY_SENSOR_DIGITAL_PIN 4
#define INTERRUPT MOTION_SENSOR_DIGITAL_PIN-2 // Usually the interrupt = pin -2 (on uno/nano anyway)
#define RELAY  5// Arduino Digital I/O pin number for first relay (second on pin+1 etc)
#define RELAY_ON 0  // GPIO value to write to turn on attached relay
#define RELAY_OFF 1 // GPIO value to write to turn off attached relay

unsigned long SLEEP_TIME = 600000; // Sleep time between reads (in milliseconds) - 10mins

DHT dht;
SimpleTimer timer;
float lastTemp;
float lastHum;
boolean lastTripped;
boolean metric = true;
MyMessage msgHum(CHILD_ID_HUM, V_HUM);
MyMessage msgTemp(CHILD_ID_TEMP, V_TEMP);
MyMessage msg(CHILD_ID_MOTION, V_TRIPPED);

MySensor gw;
void setup()  
{ 
  // Initialize library and add callback for incoming messages
  gw.begin(incomingMessage, AUTO, true);
  
  dht.setup(HUMIDITY_SENSOR_DIGITAL_PIN); 

  // Send the Sketch Version Information to the Gateway
  gw.sendSketchInfo("HumTempRelayMotion", "1.0");

  // Register all sensors to gw (they will be created as child devices)
  gw.present(CHILD_ID_HUM, S_HUM);
  gw.present(CHILD_ID_TEMP, S_TEMP);
  gw.present(CHILD_ID_MOTION, S_MOTION);
  gw.present(CHILD_ID_RELAY, S_LIGHT);
  pinMode(RELAY, OUTPUT);
  digitalWrite(RELAY, gw.loadState(RELAY)?RELAY_OFF:RELAY_ON);
  
  //Serial.begin(9600);
  timer.setInterval(30000, getMeasure);
  metric = gw.getConfig().isMetric;
  
}

void loop()      
{  
  // Alway process incoming messages whenever possible
  gw.process();
  timer.run();
  
  boolean tripped = digitalRead(MOTION_SENSOR_DIGITAL_PIN) == HIGH;    
  if (tripped != lastTripped) {
    lastTripped = tripped;
    Serial.print("M: ");
    Serial.println(tripped);
    gw.send(msg.set(tripped?"1":"0"));  // Send tripped value to gw
  }

}

void incomingMessage(const MyMessage &message) {
  // We only expect one type of message from controller. But we better check anyway.
  if (message.type==V_LIGHT) {
     // Change relay state
     digitalWrite(message.sensor-CHILD_ID_RELAY+RELAY, message.getBool()?RELAY_ON:RELAY_OFF);
     // Store state in eeprom
     gw.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());
   } 
}

void getMeasure() {
  delay(dht.getMinimumSamplingPeriod());

  float temperature = dht.getTemperature();
  if (isnan(temperature)) {
      Serial.println("Failed reading temperature from DHT");
  } else if (temperature != lastTemp) {
    lastTemp = temperature;
    if (!metric) {
      temperature = dht.toFahrenheit(temperature);
    }
    gw.send(msgTemp.set(temperature, 1));
    Serial.print("T: ");
    Serial.println(temperature);
  }
  
  float humidity = dht.getHumidity();
  if (isnan(humidity)) {
      Serial.println("Failed reading humidity from DHT");
  } else if (humidity != lastHum) {
      lastHum = humidity;
      gw.send(msgHum.set(humidity, 1));
      Serial.print("H: ");
      Serial.println(humidity);
  }
}```

Hello

i want to make a water level sensor for my pool

i have a sensor
it's this
but i don't find a sketch for this
it's analog imput
thanks to share if you have

best regards

@Dalhoj i use this and it's working fine

i want to include another relay and it's ok for me

#include <SPI.h>
#include <MySensor.h>
#include <Wire.h>
#include <DHT.h>
#include <SimpleTimer.h>

#define CHILD_ID_HUM 1
#define CHILD_ID_TEMP 2
#define CHILD_ID_MOTION 3
#define CHILD_ID_RELAY 4

#define HUMIDITY_SENSOR_DIGITAL_PIN 19
#define MOTION_SENSOR_DIGITAL_PIN 3
#define INTERRUPT MOTION_SENSOR_DIGITAL_PIN-2 // Usually the interrupt = pin -2 (on uno/nano anyway)
#define RELAY  8  // Arduino Digital I/O pin number for first relay (second on pin+1 etc)
#define RELAY_ON 0  // GPIO value to write to turn on attached relay
#define RELAY_OFF 1 // GPIO value to write to turn off attached relay

unsigned long SLEEP_TIME = 600000; // Sleep time between reads (in milliseconds) - 10mins

MySensor gw;
DHT dht;
SimpleTimer timer;

float lastTemp;
float lastHum;
boolean lastTripped;
boolean metric = true;

MyMessage msgHum(CHILD_ID_HUM, V_HUM);
MyMessage msgTemp(CHILD_ID_TEMP, V_TEMP);
MyMessage msg(CHILD_ID_MOTION, V_TRIPPED);

void setup()  
{ 
  // Initialize library and add callback for incoming messages
  gw.begin(incomingMessage, AUTO, true);
  
  dht.setup(HUMIDITY_SENSOR_DIGITAL_PIN); 

  // Send the Sketch Version Information to the Gateway
  gw.sendSketchInfo("HumTempRelayMotion", "1.0");

  // Register all sensors to gw (they will be created as child devices)
  gw.present(CHILD_ID_HUM, S_HUM);
  gw.present(CHILD_ID_TEMP, S_TEMP);
  gw.present(CHILD_ID_MOTION, S_MOTION);
  gw.present(CHILD_ID_RELAY, S_LIGHT);
  pinMode(RELAY, OUTPUT);
  digitalWrite(RELAY, gw.loadState(RELAY)?RELAY_OFF:RELAY_ON);
  
  //Serial.begin(9600);
  timer.setInterval(30000, getMeasure);
  metric = gw.getConfig().isMetric;
  
}

void loop()      
{  
  // Alway process incoming messages whenever possible
  gw.process();
  timer.run();
  
  boolean tripped = digitalRead(MOTION_SENSOR_DIGITAL_PIN) == HIGH;    
  if (tripped != lastTripped) {
    lastTripped = tripped;
    Serial.print("M: ");
    Serial.println(tripped);
    gw.send(msg.set(tripped?"1":"0"));  // Send tripped value to gw
  }

}

void incomingMessage(const MyMessage &message) {
  // We only expect one type of message from controller. But we better check anyway.
  if (message.type==V_LIGHT) {
     // Change relay state
     digitalWrite(message.sensor-CHILD_ID_RELAY+RELAY, message.getBool()?RELAY_ON:RELAY_OFF);
     // Store state in eeprom
     gw.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());
   } 
}

void getMeasure() {
  delay(dht.getMinimumSamplingPeriod());

  float temperature = dht.getTemperature();
  if (isnan(temperature)) {
      Serial.println("Failed reading temperature from DHT");
  } else if (temperature != lastTemp) {
    lastTemp = temperature;
    if (!metric) {
      temperature = dht.toFahrenheit(temperature);
    }
    gw.send(msgTemp.set(temperature, 1));
    Serial.print("T: ");
    Serial.println(temperature);
  }
  
  float humidity = dht.getHumidity();
  if (isnan(humidity)) {
      Serial.println("Failed reading humidity from DHT");
  } else if (humidity != lastHum) {
      lastHum = humidity;
      gw.send(msgHum.set(humidity, 1));
      Serial.print("H: ");
      Serial.println(humidity);
  }
}

Hello

i want to make a similar project but i want to add a dht22 with this sketch
have you a sketch with a dht because i have a problem with mine

thanks