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The objective of this experiment is to use a PIR motion sensor to control a fan as a on/off switch. The PIR sensor will be used to detect if there is someone in front of the fan where then the raw ...

Let me introduce another simple microcontroller-based do-it-yourself circuit that detects motion and excites a light source in a flash. The “snooper” here is an ordinary passive infrared (PIR) motion ...

Recently, I exhausted my stock of common passive infrared (PIR) motion sensor modules and was looking for a new one to play with. I searched the web for a small type with self-contained electronics.