Controller box for ikea motorized blind

I had trouble fitting the switch on the original box without breaking the button, this box is a complete redesign in openscad to turn the button into a big easy to press paddle, and additional space for a power socket and DC-DC regulator. I've added the BOM with links that hopefully stay working for a while, but it's all fairly generic parts widely available from gearbest, ebay, aliexpress and similar.

This thing is a replacement for the controller box from https://www.instructables.com/id/Motorized-WiFi-IKEA-Roller-Blind/

The goal was to make the button much larger and easier to assemble and to add more space for protective circuitry after the original design scorched my wall.