Smart Fan HAT cools the Pi and passes the GPIO

Sequent8217s 20 8220Smart Fan HAT8221 for the Raspberry Pi passes along the 40-pin GPIO for other HATs and offers an MCU controlled step-up supply for precise control. There is also an optional DIN-rail kit. The Raspberry Pi 4 and other high-end Arm SBCs are increasingly requiring an accessory that was traditionally needed only on x86 8230.

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