Temperature Controlled Fan Controller
thingiverse
Post a make if you make one! :) Board in use($4 USD shipped roughly): https://www.ebay.com/itm/PWM-4-Wire-Fan-Temperature-Controller-Speed-Governor-for-PC-Fan-Alarm-DC-12V-US/372494832448 On aliexpress.com - https://www.aliexpress.com/af/PWM-fan-controller-dc-board-a23.html There are two .5mm friction 'ribs' that the board pushes in against to keep in place. The lid presses in to place. I'm using an old wall wart to power it with a 5.2mm connector. Socket for the box($6 for 10 - or maybe one of your maker buddies has one): https://www.ebay.com/itm/10-2Pcs-DC-Power-Supply-Jack-Socket-Female-Panel-Mount-Connector-5-5-x-2-1mmErE/173927130706 I didn't mess with the settings of the module as it's perfect with default settings for what I am looking for it to do and that is spin up around 85F. Runs at 20% when powered and at/below 30C. Speed increases from 20% at 30C/86F to 100% at 35C/95F linearly.
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