Help with homing issue

I was able to watch the video

oh, okay, thanks

Anyone have any idea why is doesnt smoothly jog to home and does those seemingly random steps toward it like its scared to touch it?

Ill be back to messing with it in the morning, hope i have some things to try.

You have backlash compensation on so you have to set stepgen_maxaccel to twice the max_acceleration, in your case it should be 8, not 5.

Have you tried watching the DRO/velocity readouts and backplot in Axis while it is homing? Does Axis show the Z-axis starting and stopping as it travels towards the homing switch, or is it just the motor itself doing the jerky motion? I'd almost suggest you have a hardware or wiring error of some kind from the way the Z axis is moving in that video.

I had weird homing behaviour when I built my first machine that I couldn't get my head around for a while. My axes would jog around fine, but would do odd things when homing, like not backing off a limit switch when tripped or Axis continuing to show movement after the steppers had stopped. It wasn't until after several hours of playing with settings in the INI file that I realised I hadn't powered the breakout board from the external 5V supply :whistle:

I set stepgen_maxaccel to 8, nothing changed though.

Axis DRO is following stop and go movement of the axis. I can manually enter gcode on each axis and get smooth consistent travel.

I did find that if i keep pressing home button after it errors that after 5 to 10 tries it will eventually click the switch and move to home.

I was asked about the kernal by someone, this is what i found, not sure if it was what was needed
drive.google.com/open?id=10qYVz1ET4bnv7KjTFOoc2763QwO72sfvOA