PiGRRL Zero Plus with Backlight Control

This is a PiGRRL Zero with brightness control.

* This is a purely software remix of the PiGRRL Zero Plus. Please ignore any model files attached to this project.
* This remix has **NO SOUND**

Here is a demo of how it looks:



The four brightness settings I went with were:
Full: 1023/1023
Half: 500/1023
20 percent: 200/1023
5 percent: 50/1023
They seem to closely resemble DS Lite brightness settings, which I was generally happy with.

I wrote a gist for the python script that controls brightness: https://gist.github.com/lindsaylandry/f30cc0740bc20461edf79f7c452dcc39

Place this file in `/usr/local/bin/backlight.py`

Next, I created a systemd service that will call this script upon system startup. Write the following code to `/etc/systemd/system/backlight.service`
https://gist.github.com/lindsaylandry/b975615a43f82f80e433a400808d2daa

Finally, enable this service.
`sudo systemctl enable backlight.service`



This service doesn't properly start unless the