Originally shared by Sebastian Szafran I found something wrong while Z-axis homing.

Originally shared by Sebastian Szafran

I found something wrong while Z-axis homing.
You can see normal axis movements after TinyG power-on. Then I try homing in order X Y Z. X and Y goes OK, but when the machine stops immediately after hitting Z-homing switch. The only way to proceed is the RESET button.
My switches are NC, 0V during normal operation (closed state), 3.3 after getting hit (open state).
I checked with multimeter and all is the same for X, Y and Z. But only Z is causing this issue.

How can I debug this? Is it possible to hard reset the TinyG? I already tried factory default and re-flashed firmware (build 440.20, version 0.97, hardware platform 1.00, hardware version 8.00).

Homing worked fine on all XYZ and while searching for X axis loosing steps with @Frank_Herrmann ‚Äč we temporarily disabled Zmax ($zsx) from 1 to 0. After changing $zsx back to 1 (homing only) this problem appeared.
https://youtu.be/0deZsmZaBfg

This looks like a TinyG bug to me.