Arduino Project 048 - Human Body Infrared Detector and Relay Light
Project 48 Human Body Infrared Detector and Relay Light
/* * Coding by Ronwang * This example code is in the public domain * Hardware Support by Autaba Website :https://www.autabaec.com * HC-SR501 PIR Sensor Works & Interface It With Arduino * https://lastminuteengineers.com/pir-sensor-arduino-tutorial/ * Project 48 Human Body Infrared Detector and Relay Light */ int ledPin = 13; // choose the pin for the LED int inputPin = 8; // choose the input pin (for PIR sensor) int pirState = LOW; // we start, assuming no motion detected int val = 0; // variable for reading the pin status void setup() { pinMode(ledPin, OUTPUT); // declare LED as output pinMode(inputPin, INPUT); // declare sensor as input Serial.begin(9600); } void loop(){ val = digitalRead(inputPin); // read input value if (val == HIGH)// check if the input is HIGH { digitalWrite(ledPin, HIGH); // turn LED ON if (pirState == LOW) { Serial.println("Motion detected!");// print on output change pirState = HIGH; } } else { digitalWrite(ledPin, LOW); // turn LED OFF if (pirState == HIGH) { Serial.println("Motion ended!");// print on output change pirState = LOW; } } }
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