automatic 3D printer shutter

This is the automatic printer shutter!
With the mz80 sensor on it, it sends a signal to the arduino that it is off or on, and the arduino can automatically turn off the printer by turning on and off the relays connected to the cables from which the printer is powered.

For the making video: https://youtu.be/4XN0bHsPKvw

Circuit diagram and Arduino code: https://github.com/omerikinci/auto-circuit-breaker-for-3d-printers?tab=readme-ov-file

the necessary materials:

- many thin cables
- 3-wire long usb cable
- printer power cable
- 7 pcs m3 12mm screws
- on/of toggle switch
- 12x12 push button
- 1 green led
- 1 red led
- MZ80
- Arduino UNO/NANO
- AC TO DC converter 9V
- 2 arduino relay modules,
- 2 pcs 1k resistor
- 1 pcs 10k resistor
- Glue