Hi all! Due to space restrictions I switched most of the parts to SMD. The board size went down to 70x70mm (2,78"x2,78"). My goal is to have the PCB ready by sunday.

The front door istn´t as sturdy as expected and gives way especially where the foam gaskets are. I´ll have to think about a sollution for that.

Stay tuned :)

Edit: I finished the PCB. It has got a proper copper fill on both sides now. Here´s the (99%) finished PCB:

Big changes:

• ditched the Arduino Nano for an standalone Atmega 328
• 3V3 operating voltage -> no level shifter needed anymore
• J2 - J4 and J7 - J9 are WAGO 250 series connectors. Super nice stuff :)

It the silkscreen has to be refined a bit aaaaand I have to add another voltage regulator for 5V output.