Motion activated solder fan
thingiverse
It's a motion-activated solder fan. The only problems are is that some 80 mm fans might be tight so some sanding might be required. Parts needed *Relay:https://www.amazon.com/dp/B00LW15A4W?psc=1&ref=ppx_yo2_dt_b_product_details *Motion Sensor: Sipytoph 2PCS HC-SR501 PIR Motion IR Sensor Module Body Pyroelectric Infrared Detector Module for Arduino Raspberry Pi with 40Pin Dupont Wire *Fan: Kingwin 80mm Silent Fan for Computer Cases, Mining Rig, CPU Coolers, Computer Cooling Fan, Long Life Bearing, and Provide Excellent Ventilation for PC Cases-[Black] CF-08LB *12 volt PSU .8 amps *PSU Board parts *protoboard PCB *10 uF capacitor *1 uF Capacitor *LM7805 voltage regulator
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