Firmware 0.81 Twitchy movement

[jbnimble]

After changing from Firmware 0.80 to 0.81 the sled keeps twitching, especially when moving the Z-Axis. It looks like a small circular motion or back and forth twitch. The motion is not much, but it definitely has a wiggle where I did not notice it before.

May not be relevant or a change from previous, but also noticing the Z-Axis moves in short bursts when it is moving up or down.

[BarbourSmith]

Hmmmm...that sounds like exactly the memory overflow issue 0.81 was supposed to fix. Everyone else seeing this?

[krkeegan]

My XY movement is minimal now when the Z-axis is moving, I had major issues with 0.80.

But I do agree that the Z movement is very sporadic. When retracting in particular it stutters a lot which seems really odd particularly since I have been trying to retract at the fastest speed possible.

[BarbourSmith]

I think this has to do with the PID values being tuned for the XY motors which is resulting in the z-axis expecting more load that its seeing so if overshoots, then waits, then over shoots, then waits...etc

[JDogHerman]

This issue should be fixed with version 0.82.

This issue can be closed.

[krkeegan]

The PID fix also solved this for me.