Light equipment for Anycubic Prusa i3 Upgraded

For led support use a simply plastic long as you want (each printer, one measure).
I have developed a simply electronics circuit for modulate light.
The knob (potentiometer) increase/decrease led light.
Warning, it can be very dangerous.
If you are not prepared with electronics, get help from someone you trust or a professional.

For the circuit i have used a Mosfet BDX33C and 1KOhm linear potentiometer.
For decrease voltage from 12v (printer voltage) to 5v (circuit and led voltage), i ha