Topics created by Pit34

I have finally solved my issue.

I have unmounted and checked the IR probe and discovered that a copper trace was exposed and in contact with a mounting screw. Initially there was a Kapton tape under this screw to isolate the trace as advices in DC42 blog post, but this have finally gone.
exposed pc trace

Surprisingly, the probe was perfectly functional, as long as the bed was not heating.

Hope this could help someone a day.

@dc42 Ok, thanks. I think I would give it a try on my next upgrade.

I was thinking about the closed loop this afternoon. Does Duet team have investigated the feasibility of closing the acceleration loop ? With linear composite encoder, or maybe ultra-fast sample rate accelerometer ?
The idea would be a sort of closed loop feature merged with an input shaping feature. A sort of real time input shaping.
Theoretically, a motion system with sufficient sample rate and response speed could compensate and remove mechanical resonance (motors, belt, frame, leadscrew, etc.) in real time. Inputs data filtering and tuning could be a nightmare, but I wonder if there is not a track to explore on this side.

Yes, you are right. I did not try to prove you are wrong.

But I have "phases" every 6/12 month in which I try to upgrade, or just tinker on my printer, just for fun. And I generally do not touch my printer between those phase, other than for printing things. So I do not have good memories on what is on my printer, how I have done this part or this part, etc. It is not well documented on my side.

So I prefer to backup what is actually working, so what is on chips, rather than what was used to make it work. It is just personal taste, not certainly logical or the best 😁

@oliof Running it since release!