Not much progress over the last month or so, i've been working on a more commercial project that has been taking my time. But there will be a few updates over the next few weeks.

The v2.0 dual stepper board is now up and running (gerber files, schematic and example Arduino code added to project, see links), so that's one more thing off the list.

I've assembled the TEC board, and it is awaiting testing / tuning. The controller has a tuning network that needs optimising based on the specifics of the TEC, heat source and thermal mass. So I will cobble something to check that it works and re-evaluate when I have the physical hardware to get the correct settings. Here is a preview;