Arduino Nano PIR with dynamic presence control
thingiverse
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
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