Z Probe Trigger Height G30 S-1 height changing every probe
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@Turbo ah OK, that is
M906 X800 Y800 Z800 E900 I30 ; set motor currents (mA) and motor idle factor in per cent -
okay so current looks fine. you could try bumping up by a factor of 50 to 100 and see if you get any changes, but I'm not sure about that one.
you could also adjust the electromagnet on the bltouch by tightening/loosening the allen screw on top, again, not sure, but im throwing things out there that might help. -
@Turbo thanks! I'll give those a try
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Also might help to check the tension on your V wheels on the Z carriage. Check the lead screw nut as well to see if it's loose in its mount or something. Check the lead screw coupler too. And Z motor mount.
It was asked earlier, but are you testng with the bed warmed up? Have you PID tuned the bed heater? Running the bed heater in bang-bang mode can cause the heating plate to flex slightly as it cycles current through it. Hard to probe a moving target.
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@Phaedrux I just checked the tension on the V wheels, it looks good, there's no play on the rail. I have done PID tuning. I have been testing with the bed cold
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Firmware version?
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@Phaedrux Firmware 2.03 (2019-06-13b2)
Web 1.22.2 -
I tried updating to 2.05.1, same issue unfortunately.
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I had a spare BLTouch so I just tried installing it with new wiring in hopes that was the issue, it wasn't. I must be doing something wrong or missing something but I can't seem to find what it is.
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@dc42 said in Z Probe Trigger Height G30 S-1 height changing every probe:
Let us know how you get on. I notice that you are currently losing about 0.0025mm every other probe attempt, which at the 400 microsteps/mm you are using is 1 microstep. This gives me an idea about what may be happening.
I'm not sure what else to check for. Perhaps DC42 has an idea?
