A6 MKS upgrade electronics box

This is an enclosure for an Anet A6 that (tightly) fits:

* [MKS Gen v1.4](https://www.amazon.com/gp/product/B072ZZ3YQW/ref=as_li_tl?ie=UTF8&tag=revensanchez-20&camp=1789&creative=9325&linkCode=as2&creativeASIN=B072ZZ3YQW&linkId=53e7e2cb61e1c02941856751b5508739)*
* [Mosfet](https://www.amazon.com/gp/product/B072ZZ3YQW/ref=as_li_tl?ie=UTF8&tag=revensanchez-20&camp=1789&creative=9325&linkCode=as2&creativeASIN=B072ZZ3YQW&linkId=53e7e2cb61e1c02941856751b5508739)*
* [Raspberry Pi 3](https://www.amazon.com/gp/product/B072ZZ3YQW/ref=as_li_tl?ie=UTF8&tag=revensanchez-20&camp=1789&creative=9325&linkCode=as2&creativeASIN=B072ZZ3YQW&linkId=53e7e2cb61e1c02941856751b5508739)*
* [3A Buck converter](https://www.amazon.com/gp/product/B072ZZ3YQW/ref=as_li_tl?ie=UTF8&tag=revensanchez-20&camp=1789&creative=9325&linkCode=as2&creativeASIN=B072ZZ3YQW&linkId=53e7e2cb61e1c02941856751b5508739)*

I upgraded my A6 to a MKS Gen v1.4 as it was the simplest (and cheapest) route to upgrade the stepper drivers