Progress on the DIY soldering station:
I can control the voltage of a buck converter with a DAC. I can probe the resistance of the soldering iron cartridge by feeding 0.25V into it and measuring the current.
Probing the resistance is important because I need to control the current output. The buck converter has voltage feedback but not current. I have a 5A limit on my buck converter and a 3.2A limit on my current sensor (clearly need to change that sense resistor).
Reasons not to use a dedicated thermocouple reader for a soldering iron controller:
1. Shared ground treated as fault
2. No control over when the measurements are done
@_salkinium I don’t know German politics well enough to comment, but I don’t see any options other than nuclear. The risk of failure isn’t great enough to leave the status quo alone.