We are having a change in the way the stallguard behaves on the TMCM 303/SG module.
We are using this module for more than 3 years using firmware V3.17 and optimized it with this firmware.
Few days ago we started installing new modules with firmware V3.3 and we have problems with the stallguard.
We performed downgrade of the firmware to 3.16 (we don't have the V3.17) and the problem disappeared. Upgrading to the latest version from the website to V3.34 brought back the problem.
So it looks like a firmware issue, something in firmware V3.34 behaves differently with the stallguard.
We also noticed that the motor controller IC on the module has changed from 246-AP to 246A-AP, does this also supposed to make new behaviors?
In order to find the fastest solution for the problem, please advise with the following questions:
1. Can we receive firmware V3.17 by e-mail?
2. Is there a problem downgrading the new modules that arrive with to the old V3.17?