Air Scrubber Fan Controller
prusaprinters
This is a box to house the components required to control a 4-wire fan used in my Air Scrubber project for my LACK enclosure.The information is displayed on a 128x32 OLED display. https://ebay.us/rxHI4iThe control is performed by an Arduino Pro Mini (16MHz 5v). https://ebay.us/T4mzeEThe fan speed is selected by a 4 position rotary switch. https://ebay.us/NkEpefKnob (23mm) for rotary switch. https://ebay.us/hsyoyOThe supply voltage for the fan is through a (5v) relay switched off by the Arduino. https://ebay.us/6b8B6jConnector is 4 pin JST. https://ebay.us/Kgg9Wj12vRocker Switch. https://ebay.us/8zmu28 I've used 90 degree spade connectors12v to 5v buck converter. https://www.adafruit.com/product/4739 or https://tinyurl.com/5b9vddtf from Pimoroni UK.Wiring for internal electronics 24awg. https://ebay.us/5w8QUT & https://ebay.us/QNX6JpThe Gcode is in PETG with 0.2 layer height & 0.4 nozzle. No supports are required.It's a fiddley assembly and I wish I had allowed more space and offset the power in and on/off switch.
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