Motion Sensor for Halloween Animatronics – HC-SR501 PIR + PC817 Optocoupler Enclosure #3DThursday #3DPrinting

Shared by tupsyvejle on MakerWorld: An enclosure for a DIY motion-trigger module aimed at Halloween animatronics. BOM: HC-SR501 PIR motion sensor, Sharp PC817 optocoupler, 9V battery clip (Type T),…