Arduino Nano PIR with dynamic presence control by matghir

Last crawled date: 3 years, 1 month ago

Arduino Nano with PIR module and Solid State Ralay, PIR pin 3, Relay pin 4 (low level trigger)
//CODE
int sensore=0;
int spento=0;
void setup() {
Serial.begin(9600);
pinMode(4,OUTPUT);
pinMode(3,INPUT);
digitalWrite(4,HIGH);
}
void loop() {
Serial.println(sensore);
sensore=digitalRead(3);
if(sensore){
digitalWrite(4,LOW);
spento=0;}
else
spento++;delay(100);
if(spento >500) //TIME ON 500*100=50000millisec change as you need
digitalWrite(4,HIGH);
}
//END
Material:
https://www.aliexpress.com/item/ree-Shipping-HC-SR501-Adjust-Infrared-IR-Pyroelectric-Infrared-PIR-module-Motion-Sensor-Detector-Module-We/32710944048.html?spm=a2g0s.9042311.0.0.YVdXux
https://www.aliexpress.com/item/1pcs-Nano-V3-0-ATmega168P-CH340-MicroUSB-Compatible-for-Arduino-Nano-V3-0-hei/32691701798.html?spm=a2g0s.9042311.0.0.YVdXux
https://www.aliexpress.com/item/5V-1-Channel-SSR-G3MB-202P-Solid-State-Relay-Module-240V-2A-Output-with-Resistive-Fuse/32796321054.html?spm=a2g0s.9042311.0.0.YVdXux
You also need a 5v USB source