RRF3 Homing Issues

dc42

I have reproduced the following problem: If I try to home X with the X endstop initially not triggered, it mostly works. If I try to home X with the X endstop triggered at the start, it mostly fails with "Error: insufficient axes homed".

If I reconfigure the machine as a Cartesian, it works every time whether or not the endstop is triggered initially.

dc42

I think I've now found the cause - and a workaround. When preparing for the G1 H1 move, the code isn't waiting for the previous move to complete before priming the endstops. It works if I change homex.g to this:

; homex.g
G91
G1 H2 Z2 F200
M400     ; <========= added
G1 H1 X-500 F6000
G1 X4 F600
G1 H1 X-10
G1 H2 Z-2 F200

A similar change will be needed to homey.g.

I'll fix this in the next build.

dc42

I've put new RRF3 binaries at https://www.dropbox.com/sh/3azy1njy3ayjsbp/AACquxr2m00eV568RZg5QG5wa?dl=0. The problem was wider than I originally thought, so the workaround I suggested earlier can't be guaranteed to work always. Please try the new firmware.

Danal

Board: Duet 3 MB6HC (MB6HC)
Firmware: RepRapFirmware for Duet 3 MB6HC v0.6 or 1.0 3.0beta11+1 (2019-10-30b3)

This does seem to have fixed it. My previous test case, "G1 X-5" followed by "G28 X" now works. Also, "home all" was failing on x quite a bit of the time, and it now runs over and over, cleanly.

gtj0

@dc42 said in RRF3 Homing Issues:

I've put new RRF3 binaries at https://www.dropbox.com/sh/3azy1njy3ayjsbp/AACquxr2m00eV568RZg5QG5wa?dl=0. The problem was wider than I originally thought, so the workaround I suggested earlier can't be guaranteed to work always. Please try the new firmware.

@dc42 Are those changes all pushed to github?

dc42

@gtj0 said in RRF3 Homing Issues:

@dc42 said in RRF3 Homing Issues:

I've put new RRF3 binaries at https://www.dropbox.com/sh/3azy1njy3ayjsbp/AACquxr2m00eV568RZg5QG5wa?dl=0. The problem was wider than I originally thought, so the workaround I suggested earlier can't be guaranteed to work always. Please try the new firmware.

@dc42 Are those changes all pushed to github?

yes.

dc42

@Danal said in RRF3 Homing Issues:

Board: Duet 3 MB6HC (MB6HC)
Firmware: RepRapFirmware for Duet 3 MB6HC v0.6 or 1.0 3.0beta11+1 (2019-10-30b3)

This does seem to have fixed it. My previous test case, "G1 X-5" followed by "G28 X" now works. Also, "home all" was failing on x quite a bit of the time, and it now runs over and over, cleanly.

Thanks for the confirmation.

dc42

@dc42 said in RRF3 Homing Issues:

@gtj0 said in RRF3 Homing Issues:

@dc42 said in RRF3 Homing Issues:

I've put new RRF3 binaries at https://www.dropbox.com/sh/3azy1njy3ayjsbp/AACquxr2m00eV568RZg5QG5wa?dl=0. The problem was wider than I originally thought, so the workaround I suggested earlier can't be guaranteed to work always. Please try the new firmware.

@dc42 Are those changes all pushed to github?

yes.

PS- if you haven't built RRF for a while, be sure to pick up the changes in CoreNG, FreeRTOS and RRFlibraries projects too.

gtj0

@dc42 said in RRF3 Homing Issues:

@dc42 said in RRF3 Homing Issues:

@gtj0 said in RRF3 Homing Issues:

@dc42 said in RRF3 Homing Issues:

I've put new RRF3 binaries at https://www.dropbox.com/sh/3azy1njy3ayjsbp/AACquxr2m00eV568RZg5QG5wa?dl=0. The problem was wider than I originally thought, so the workaround I suggested earlier can't be guaranteed to work always. Please try the new firmware.

@dc42 Are those changes all pushed to github?

yes.

PS- if you haven't built RRF for a while, be sure to pick up the changes in CoreNG, FreeRTOS and RRFlibraries projects too.

Yeah I've been keeping up and I can confirm that the fixes fixed the homing issues!

dc42

Thanks, I'll mark this as solved.

Nuramori

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