This post belongs to the Atreus build series, which was introduced by Onward with the Atreus keyboard.
Today I glued the switches on the base plate (the layer that holds them, commonly made of metal to avoid cave-in when typing energetically). It turned out to be more cumbersome than anticipated. Especially if you glue up the switches in the wrong direction…
Once all the switches were glued up, I decided to make sure they were all working correctly. Just in case QA let something slipped under their radar. (Or if I broke one with my inexperienced handling.) I flashed QMK (there is direct support for the Atreus Pro Micro) to the Pro Micro and soldered two wires. Then I plugged it in my computer, and started a keyboard testing tool (QMK has a nice page showing exactly which (combination of) key gets pressed; but any text input such as a text editor or terminal would have worked as long as the wires are shorting a pin mapped to a letter).
I held the dangling wires to each pair of switch pins while pressing the whole plate down on the table. Don't judge me, it worked fine.