Self ajusting parking disc europe

Mechanic Parts for an ordinary cardboard parking disc (Europe)

Step 1:

Remove the back of the parking disc. (The rivet in the middle must continue to hold the front and the ldial.

Step 2:

Glue the large gear with the flat side in the middle around the rivet.

Step 3:

Screw the stepper motor onto the motor mount using M4 screws and nuts.

Step4:

Put a small gear on the stepper motor. Place the roundaround spacer on the gear (as a placeholder for the base plate).

Screw the motor mount onto the base plate (M3)

Step 5:

Glue the base plate at the corners from the back to the front of the parking disc. Distance: 1mm

(The ground plate can be a 1.6mm PCB also)

Have fun with programming the microcontroller, driving an ULN2803A.