Tea Time Shock Project
Circuit:
The cicuit consists of a 9-vlot battery, a transormer from an electric shock pen, an Adafruit Power Relay FeatherWing, an arduino UNO, and a makeshift box with aluminium on both sides of the box. https://i.imgur.com/PONSclv.jpg
I tried making this circuit https://electronics.stackexchange.com/questions/72667/electric-chewing-gum-prank-circuit-diagram for about 1.5 months but the former worked.
Code:
There is Arduino code and Processing code in this repo.