Recommended · for beginners

Arduino Temperature Controlled Fan Speed

Why people recommend it

Recommended for learning to switch or speed-control a 12V fan from an Arduino with a MOSFET, covering the circuit and sensible precautions in detail.

Watch for: Suits first projects mixing 12V loads with a microcontroller

In their words

I connected it exactly as in this video.
Jan on electronics.stackexchange.com, Aug 2019. CC BY-SA.

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