Summary

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/Free-shipping-200x200-1-54inch-E-Ink-display-module-SPI-interface-1-54inch-e-Paper-Module/32835141592.html
They exist in other color variants...e.g. black + yellow.

The solar panels here: https://www.aliexpress.com/item/Portable-Mini-6V-0-6W-S-olar-Panel-Power-Poly-Module-DIY-Small-Cell-Charger-Solar/32738823484.html

EDIT: Made a slightly improved lid for the display