This is the second fan switch I've used, as the other didn't operate at 5v.
This is a decent size, sturdy, and quick setup. I've used this on both Pi4 and Jetson Nano. I have the GeekPi cluster case with 3 units and a 12CM 5v fan. The fan does not have a tach option, so it's always on and a bit loud. This unit along with a python script on the Jetson Nano, if any of the nodes report in with a high temperature it will kick in the fan for a time.
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