Hi guys i have a pir sensor and a relay, I have a code for the combination of pir and relay.I want to control the relay with the mymqtt app from my phone with on,off: on means sensor is on and after that run the code of pir and relay where pir take prices val=0 no motion val=1 yes motion and if val=1 relay low for example.in other situation off pir means the other code the code of pir and relay didn't run.i think must create an if(payload==0) {
digitalWrite(pir,LOW);
client.publish("mytopic",pir sensor is on); and after i want this code to run
int lamp = 8; // choose the pin for the RELAY
int inputPin = 4; // choose the input pin (for PIR sensor)
int val = 0; // variable for reading the pin status
void setup() {
pinMode(lamp, OUTPUT); // declare lamp as output
pinMode(inputPin, INPUT); // declare sensor as input
Serial.begin(9600);
}
void loop(){
val = digitalRead(inputPin); // read input value
Serial.println(val);
if( val== 1) {
digitalWrite(lamp,HIGH); // turn ON the lamp
} else {
digitalWrite(lamp,LOW); // turn OFF the lamp
}
} and finaly when i press the off pir no activate and above code didnt run