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Raspberry Pi GPIO Cooling Fan Expansion Board with LED Compatible for Raspberry Pi 4B/3B+/3B|Demo Board| - AliExpress
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GitHub - hamzab70/Raspberry-Pi-Fan-Script: Simple Bash script to control the fan speed using the Rapsberry Pi GPIO and a transistor.
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ARGON Fan Hat for Raspberry Pi 4 GPIO Expansion Board with Cooling Fan Function Power Button for Raspberry Pi 4 Model B/3B+/3B|Demo Board Accessories| - AliExpress
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Amazon.co.jp: GeeekPi Power Hat Board, Fan Control LED Dual Cooling Fan Module GPIO Expansion Board with Dual Fan Switch, Compatible with Raspberry Pi 4 Model B/3B+/3B/2/1 : Computers
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Greenhome GPIO Expansion Board LED Cooling Fan Module for Raspberry Pi 4B 3B+ 3B 2B+ 2B B - Walmart.com
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