Humidity, temperature, motion and bunch of relays...

[Tomasz Pazio]

Hi everybody,
I'm trying to have a sketch for my leaving room which should have 8 relays, humidity, temperature and motion sensors.
I was able to merge few sketches to one and it works fine with 4 relays but i have problem with second "array" or sensors
this is my working sketch

#include <MySensor.h>
#include <SPI.h>
#include <Wire.h>
#include <DHT.h>
#include <SimpleTimer.h>
#define CHILD_ID_HUM 20
#define CHILD_ID_TEMP 21
#define CHILD_ID_MOTION 22

#define RELAY_1  14  // Arduino Digital I/O pin number for first relay (second on pin+1 etc)
#define NUMBER_OF_RELAYS 4 // Total number of attached relays
#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
#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)
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 and Controller
  gw.sendSketchInfo("HumTempRelayMotion", "1.4");
   // Register all sensors to gw 
    gw.present(CHILD_ID_HUM, S_HUM);
    gw.present(CHILD_ID_TEMP, S_TEMP);
    gw.present(CHILD_ID_MOTION, S_MOTION);
  // Fetch relay status
   for (int sensor=1, pin=RELAY_1; sensor<=NUMBER_OF_RELAYS;sensor++, pin++) {
    // Register all sensors to gw (they will be created as child devices)
    gw.present(sensor, S_LIGHT);
    // Then set relay pins in output mode
    pinMode(pin, OUTPUT);   
    // Set relay to last known state (using eeprom storage) 
    digitalWrite(pin, gw.loadState(sensor)?RELAY_ON:RELAY_OFF);

}
  //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-1+RELAY_1, 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);
        }
}

[Dwalt]

@Tomasz-Pazio

What is not working? The sensors (DHT & PIR) or the relays?

You have a function "void getMeasure' but you don't specifically call for it in your main loop.

What is the timer for?

[Tomasz Pazio]

Sorry I was to fast. I have problem with second "array" or sensors, first is working on pins 14-17 so analog. Second part should work on pins 5-8 but I have no idea how to make this. All works fine now but on 4 relays, I need to add 4 more.

[Dwalt]

@Tomasz-Pazio I read too fast as well, did not see 'timer.setInterval(30000, getMeasure);

You could use an Array to link the relay pins to Relay 1-8.

[Tomasz Pazio]

@Dwalt think that I undersand the idea but no idea how to write this in code, google gives a lot of examples but hard for me to code this

[BulldogLowell]

@Tomasz-Pazio

an approach with the relays would be like this bit of (untested) code:

#include <MySigningNone.h>
#include <MyTransportNRF24.h>
#include <MyTransportRFM69.h>
#include <MyHwATMega328.h>
#include <MySensor.h>
#include <SPI.h>

#define NUMBER_OF_RELAYS 8
#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

const int relayPin[NUMBER_OF_RELAYS] = {5,6,7,8,14,15,16,17};  //<<<<<<<pin numbers

MyTransportNRF24 radio(RF24_CE_PIN, RF24_CS_PIN, RF24_PA_LEVEL_GW);  

MyHwATMega328 hw;

MySensor gw(radio, hw);

void setup()  
{   
  gw.begin(incomingMessage, AUTO, true);
  gw.sendSketchInfo("multiRelay", "1.0");
  for (int i = 0; i < NUMBER_OF_RELAYS; i++) 
  {
    gw.present(i, S_LIGHT);
    pinMode(relayPin[i], OUTPUT);   
    digitalWrite(relayPin[i], LOW);
  }
}

void loop() 
{
  gw.process();
}

void incomingMessage(const MyMessage &message) 
{
  if (message.type == V_LIGHT) 
  {
     digitalWrite(relayPin[message.sensor], message.getBool()? RELAY_ON : RELAY_OFF);
   } 
}

[Tomasz Pazio]

@BulldogLowell works fine with this thanks for support.

[petoulachi]

Hey !

I'm trying to use your code to do a Motion/temp/humidity sensor, but I dont know why the motion sensor is sending 0/1/0/1... if there is nothing moving ?!

Here is my code :

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

#define CHILD_ID_HUM 0
#define CHILD_ID_TEMP 1
#define CHILD_ID_MOT 2
#define MOTION_SENSOR_DIGITAL_PIN 3
#define HUMIDITY_SENSOR_DIGITAL_PIN 4
//#define INTERRUPT MOTION_SENSOR_DIGITAL_PIN-2

unsigned long SLEEP_TIME = 30000; // Sleep time between reads (in milliseconds)

MySensor gw;
DHT dht;
SimpleTimer timer;
float lastTemp;
float lastHum;
boolean lastTripped;

MyMessage msgHum(CHILD_ID_HUM, V_HUM);
MyMessage msgTemp(CHILD_ID_TEMP, V_TEMP);
MyMessage msgMot(CHILD_ID_MOT, V_TRIPPED);


void setup()  
{ 
  gw.begin();
  dht.setup(HUMIDITY_SENSOR_DIGITAL_PIN); 

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

  pinMode(MOTION_SENSOR_DIGITAL_PIN, INPUT);
  // 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_MOT, S_MOTION);

  timer.setInterval(30000, getMeasure);
}

void loop()      
{  
  timer.run();

  boolean tripped = digitalRead(MOTION_SENSOR_DIGITAL_PIN) == HIGH;    
  if (tripped != lastTripped) 
  {
    lastTripped = tripped;
    Serial.print("M: ");
    Serial.println(tripped);
    gw.send(msgMot.set(tripped?"1":"0"));  // Send tripped value to gw
   }
}

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;
    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);
   }
}

Do you have any idea what could be causing that ?

Regards !

[AWI]

@petoulachi it looks like your input pin for the sensor is floating. You can enable the internal pull-up to check ( INPUT_PULLUP i.s.o. INPUT)

[petoulachi]

I'm sorry I'm a newbie with arduino so I don't understand what you want me to test ?

[petoulachi]

If you were meaning that I have to do

pinMode(MOTION_SENSOR_DIGITAL_PIN, INPUT_PULLUP);

instead of

pinMode(MOTION_SENSOR_DIGITAL_PIN, INPUT);

It changes nothing !

[petoulachi]

I found where was the problem, I'm really a newbee... The motion sensor was plugged to the 3.3VCC, not 5V, doing this strange behaviour !