How to make a motion(PIR) sensor light

 Materials:- 

• Arduino uno =  https://bit.ly/30v5XcY
• PIR sensor    =  https://bit.ly/30hBAIJ
• Relay           = https://bit.ly/2ZPVydK

Diagram:-

Connections:-

PIR motion sensor to Arduino

• PIR VCC = Arduino 3.3V
• PIR GND = Arduino GND
• PIR  out   = Arduino D7

Relay to Arduino

• Relay VCC = Arduino 5V
• Relay GND = Arduino GND
• Relay IN1 = Arduino D9

Downloads:-

Code = https://bit.ly/3ip9zoZ

Code

int pir = 7;

int relay = 9;

void setup() {

pinMode(pir, INPUT);

pinMode(relay, OUTPUT);

}

void loop() {

  int val =digitalRead(pir);

if(val== 1){

  digitalWrite(relay, HIGH);

}else{

  digitalWrite(relay, LOW);

}

}