Door Knocker/Thumper/Banger powered by Wiper Motor - Halloween Scare

myminifactory

Homemade Door Knocker/Thumper/Banger using a Rubber Mallet, 3D Printed Parts, Wood, and a Wiper Motor. A Spooky Halloween Scare! Main Video Link: https://youtu.be/lFoxJc9jLHI Video for Control Circuit: https://youtu.be/YMU_4FIxcbk Upgrade Video: https://youtu.be/prDvl66kK8A Get the Upgrade PDF File from the 3D Printer Models Page on Google Website. Download Here. Parts Needed for Knocker Mechanism: One Rubber Mallet One 5/16" x 2.5" Smooth Screw with Thread One 1/4" x 2" Smooth Screw with Thread One 5/16" Nylon Lock Washer One 1/4" Nylon Lock Washer Four 5/16" Washers Four 1/4" Washers 3D Printed Parts Parts List for Circuit: 1x 12v Relay - https://amzn.to/2t4jlVU 1x 1N4148 Diode - https://amzn.to/2WCIKU5 1x 2N2222A Transistor - https://amzn.to/2MKK9Dq 1x 1k ohm Resistor - https://amzn.to/2WFL6kS 1x HC-SR501 or HC-SR505 PIR Module HC-SR501 - https://amzn.to/2MN52hh HC-SR505 - https://amzn.to/2GjZzgX 1x Prototyping Board - https://amzn.to/2MKkHOk 1x Set of Connectors - https://amzn.to/2GpHKNB More Details on Parts in Video