Electronic Catapult
This machine can shoot some lighter objects with a DC motor.
Supplies
DC motor, L2982, arduino board, breadboard, wire, popsicle stick, spoon.
Stick the popsicle
stick on the DC motor, then put the thick cardboard on top, and then make the thick cardboard into a small carton.
After connecting
the arduino circuit, put it in a small carton, and then write the program (as shown in the figure below) and plug it in to complete it.