TempDoctor - Revolutionary Open Source Temperature Controller for Reflow Ovens

[dorin]

The topic could probably also fit in OHSW but I wasn't sure if the project actually qualifies for that badge.

You might think oh no, not yet another reflow oven controller..
But you've got to admit this one is pretty badass, it's a working example of clever front panel design and clever control algorithms.











Details, firmware and design files: https://zenontech.wordpress.com/2018/04/01/tempdoctor-reflow-oven-controller/

In terms of reflow performance, from my measurements (not so rigorously documented unfortunately) it turns out that no point on the PCB's is more than 7 degrees C off from the center oven thermocouple. That difference can happen when the whole oven is ramping up with more than 1 degree per second and of course thermal inertia is hard to overcome but when the oven temperature is stable (no ramping up or down) then all points inside are within 2 degrees from the center, which is more than good enough.

If you have feedback or questions I'll do my best to reply, but I moved my career focus from hardware to software & AI so I definitely won't maintain / improve this project. Of course, anyone can fork the design and do whatever they please with it.