Using an HC-SR501 Motion Sensor with a Relay and Arduino Code

Using an HC-SR501 Motion Sensor with a Relay and Arduino Code

By Ahmad Shamshiri
May 4, 2025

This video shows you how to control a relay when motion is detected. You can turn on an alarm, an AC bulb, or any other load by detecting motion using an Arduino and an HC-SR501 motion sensor.

141-Arduino source code for an HC-SR501 motion sensor to control an AC bulb or load

Language: C++

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Using an HC-SR501 Motion Sensor with a Relay and Arduino Code

Using an HC-SR501 Motion Sensor with a Relay and Arduino Code

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Files📁

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Using an HC-SR501 Motion Sensor with a Relay and Arduino Code

Using an HC-SR501 Motion Sensor with a Relay and Arduino Code

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