SystemD

SystemD. The outcast of the EightEquals series of boards.

SystemD was a canceled board in the series. It's completely untested but should work fine for many types of situations. It's a tightly integrated board featuring 3 dedicated heater/fan ports, as well as 4 thermistor ports. This was used as a learning experience for picking up kicad, and it clearly shows. Power runs in the board aren't nearly as thick as I want them to be for 120w heaters, thermistors are great but no room for an amp for PT100/PT1000, and a Roborock fan port integrated as well. Everything that could be overkill is massively hampered by other early design choices, and didn't encapsulate the unix philosophy of a modular and purpose built system that I wanted. It still has many GPIO pins free for whatever you want, so maybe someone will find a use for it.