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MarlinFirmware / Marlin

Marlin is an optimized firmware for RepRap 3D printers based on the Arduino platform. Many commercial 3D printers come with Marlin installed. Check with your vendor if you need source code for your specific machine.
https://marlinfw.org
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Some points are not probed with a more than 9 points matrix with AUTO_BED_LEVELING_BILINEAR #6766

Closed jdelahayes closed 7 years ago

jdelahayes commented 7 years ago

Some points are not probed when i set GRID_MAX_POINTS_X and GRID_MAX_POINTS_Y to more than 3 (4 or 5) with AUTO_BED_LEVELING_BILINEAR.

The head move from point to point but the movement to probe the bed on Z axe is not done on all points, generally 2 points (or more, i can't remenber) are not probed.

I use bugfix-1.1.x, core xy, ramps, bilinear bed levelling. My config is here https://github.com/jdelahayes/Marlin/blob/bugfix-1.1.x-voron/Marlin/Configuration.h

Roxy-3D commented 7 years ago

The bed size is defined by where the nozzle can go. But because the probe is often times offset from the nozzle, that means there are locations the probe can not reach.

jdelahayes commented 7 years ago

There is no offset, it's a nozzle-based probe-switch and the my X_PROBE_OFFSET_FROM_EXTRUDER and Y_PROBE_OFFSET_FROM_EXTRUDER are egal to 0. The head move at the point position, make a short stop and go to the next point without probing the bed. The missing point are not necessarly at the extremity of the matrix.

Bob-the-Kuhn commented 7 years ago

I've seen that "move to a point, stop, do nothing, go on to the next position" when the probe was already triggered.

Maybe there's a cable issue or an interference problem.

Curiosity question - are you using a piezo system or a mechanical switch?

jdelahayes commented 7 years ago

I will try to mesure the switch signal tonight. It's a mechanical switch. Thank you.

jdelahayes commented 7 years ago

Yesterday, before re-testing, i pull the lastest changes from bugfix-1.1.X and since i cannot reproduce the problem ... i will re-re-test tonight ...

jdelahayes commented 7 years ago

The problem came from a wrong adjustment of the screw adjusting the pressure of the switch ... sorry for the time wasted!

jdelahayes commented 7 years ago

And thank you @Bob-the-Kuhn for the tips.

github-actions[bot] commented 2 years ago

This issue has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.