Motion sensor

Turn on an AC lamp using Arduino, 5V relay and motion sensor

BuildCircuit6 years ago5 years ago02 mins

This is a simple motion sensor project using Arduino. A 220V AC lamp is connected to a 5V relay and the relay is activated once the motion sensor senses motion and sends a signal to the Arduino. List of materials Arduino Uno ( Rev 3 ) Sensor ( PIR ) HC-SR501 Keyes SRD-05VDC-SL-C Relay Module or any 5V relay module…

BuildCircuit13 years ago4 years ago11 mins

Here’s a simple motion sensor. Sketch has been taken from Arduino site. The sensor’s output pin goes to HIGH if motion is present. However, even if motion is present it goes to LOW from time to time, which might give the impression no motion is present. This program deals with this issue by ignoring LOW-phases shorter…