Probe does not work with 2.02a + DWC 2.0.0 RC3
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Can you confirm that when you use M558 P5 (or P8), if you connect the Z probe In pin to ground it makes the Z probe reading change for 0 to 1000? Similarly if you use M558 P4 and connect the E0 endstop STP pin to ground.
The difference between firmware versions is because on some firmware versions, the pullup resistors were not enabled on the endstop inputs. Enabling them improves noise immunity in the high state, but worsens it in the low state. It's arguable which is better.
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Yes, when I short z probe IN and z probe GND, the value changes to 1000.
Wouldn't it be possible to allow us to (de)activate the pullup resistors for individual ports in config.g?
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Wouldn't this be a solution?
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@garv3 said in Probe does not work with 2.02a + DWC 2.0.0 RC3:
Wouldn't this be a solution?
Maybe, but it's an an extra complication. Had you used a Schottky diode as we recommend, or alternatively no diode at all if your Duet is revision 1.04. then it would work anyway.
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It is revision 1.03
I will try to get the diode and test ist. -
I have it on my list to check the noise margin of the endstop inputs with and without the pull up resistor enabled, to see which is better overall.
