Ender 3 pro, finished job turn off and filament end turn off

thingiverse

I hate having my printer on when the job is finished. so I made a small system to turn off the power when it is done printing or when the filament ends. It requires some electronics and soldering. I hope I got the wiring schematics right... Turn off delay is about 90sec. the box with switches just clips onto the plastic housing. the 220v relay is in the second box. ( just a relay breakout board) The electronics is a time delay so it doesnt turn off immediately as soon as a switch is pushed. the switch on top is to deactivate the switches. the electronics get powered by a USB charger or powerbank. the ender pro has the resume after power loss so you could put in a new filament and resume. you will need: 1 USB cable some wires, 1 power cable 1 power plug (smallest version) 2 small screws M3 1 long screw M3 2 Microswitches with the little wheel. 1 arduino/raspi single relay module 1 3mm led 1 mini flip switch on/on 1 transistor BC337-25 or similar 1 small Capacitor 100pF 16v 1 resistor 330ohm 1 resistor 20ohm 1 resistor 470ohm 1 Diode Repost since my first post somehow got lost..