Duet 3 Expansion 3HC sensorless homing via CAN

Cognirit

@dc42 thank you for reply! Am I correct that we would be best off waiting for this feature in 3.6.0beta3 or later? So as not to interfere with work on beta2?

dc42

@Cognirit yes, we intend to release beta2 as soon as we have fixed two bugs in beta1.

Cognirit

@dc42 Can you tell us if there is at least a rough prediction of when the update we need will be released at least in beta? We would love to take on testing it and actively share the results.

Cognirit

@dc42 Good day!

I noticed the release of beta3 in the project changelog.

Could you please let me know if the sensorless homing issue for the Duet3 Extension 3HC board is planned to be fixed in beta3?

Thank you!

tru_ann

@dc42 Good afternoon!
We join the question from Cognirit about issue solution in beta3. We also are very much looking forward to a soon release in which this problem will be fixed. Thanks!

gnydick

I didn't know this was a limitation of the expansion boards. I ignorantly went out and got the 3HC, converted my RailCore to AWD and sensing works. My 3HC is CAN ID 1 and I see messages in the console that tell me driver 1.0 or 1.1 stalled.

The issue I do face, please don't discuss here, I'll start a post and not steal this thread, is that the steppers become increasingly unsynced after homing each axis.

dc42

@tru_ann @Cognirit we've scheduled this feature to be included in 3.6 and I've started work on it. It may not be finished in time for 3.6 beta 3 but will be in 3.6 RC1.

Cognirit

@dc42 Great to hear that! Thank you!

T3P3Tony

@Cognirit this has been implemented in 3.6 beta3:

https://forum.duet3d.com/topic/37289/software-version-3-6-0-beta-3-now-available

Cognirit

@T3P3Tony Thank you for writing! @dc42

I can't properly convey how glad I am that I came across your developments and Duet2 about 7 years ago - and I still use them primarily in projects and research.

In my opinion it is currently the most flexible and user-friendly system for enthusiasts who are trying to create something new in the world of CNC machines.

Thank you and your team for all the work and effort you've put into this ecosystem and I hope it thrives for a long time to come!

T3P3Tony

@Cognirit thanks for the kind words!