E-Paper solar box

A Box for mounting E-Ink 1.54" display (Waveshare)

I'm using this little self contained box to display the current output of my solar panels on my roof.

Inside is a NodeMCU ESP8266 and a Li-Ion 3.7v battery which is charged by the solar panels.
With regular intervals it wakes up from deep-sleep and connects to the local wifi, reads json data submitted by a Raspberry Pi and displays it on the e-ink display.

The e-ink display (Red+Black) can be found here: https://www.aliexpress.com/item