CALE Waveshare 7.5" v2 E-ink back-case

### http://CALE.es - Web-Service configure API mixins with image output for ESP32 /8266

This a custom back case to use along the front case of Waveshare, that comes with 12 magnets, but is very thin. This redesign aims to make place to host as many things you want including:

- 5000 mA Lion battery
- TinyPICO esp32 (From unexpected maker)
- 12*12 mm square push button (Reset)
- USB hole

[Demo video using a ESP8266 as controller](https://www.youtube.com/watch?v=5x-FETrisDw)
If you are willing to use this in your office I would like to have a small donation so I can dedicate more time to work on this project.
If you are interested in making your own google Calendar that will refresh each 2 hours and use less than 1 mA / hour in deepsleep, this can be of your interest. Please follow the [CALE project in hackaday](https://hackaday.io/project/169086-cale-low-energy-eink-wallpaper)

### If you use it for your office please support the project [sponsoring CALE in Github](http