Ender-5 rear mount pi

#WIP
[Raspberry Pi mount](https://www.thingiverse.com/thing:4140386) redone from scratch in OpenScad to use a YYG-2 SLA-05VDC-SL-C.

# Warning

I am not an electronics professional and you follow these instructions at your own risk. This is mainly based on [Octoprint plugins for better and safer printing - PSU relay control](https://www.youtube.com/watch?v=ozCqqlPJ3a0) where mistakenly an **underrated 10A relay** is used which is considered dangerous (see the updated video description and comments). The 30A YYG-2 used here should be fine (especially with the decent flat shoe screw terminal) but if you see any mistakes please be sure to leave a comment.

# Requirements

- [YYG-2 SLA-05VDC-SL-C](https://de.aliexpress.com/i/4000589358083.html) (make sure to get the 5V version with flat shoe terminal)
- [LM2596](https://de.aliexpress.com/i/32721507753.html)
- [Raspberry Pi](https://www.raspberrypi.org/products/raspberry-pi-3-model-b/)
- fork cable shoes
- 16AWG wire for the 24