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Odd Z-Probe Issue

Posted by wren2k2 
Odd Z-Probe Issue
December 08, 2018 08:41PM
So I'm currently trying to set up my z-probe for my printer. When I upload my firmware my z-probe works as expected. It triggers when the bed is close and the light is on but shows as open when the bed is further away and the light is off. However after a g28 command the z-probe is then stuck in the triggered state. To get it to trigger properly I have to upload the firmware again.....there is possibly some command which would effect the same result, but I haven't found it yet. My config file is attached. Any assistance would be appreciated.
open | download - Configuration.h (69.4 KB)
Re: Odd Z-Probe Issue
December 08, 2018 09:20PM
The Following line of code is required for proper operation.

#define Z_MIN_PROBE_ENDSTOP_INVERTING false // set to same logic as "Z_MIN_ENDSTOP_INVERTING".

Computer Programmer / Electronics Technician
Re: Odd Z-Probe Issue
December 09, 2018 03:56AM
Yes i commented that line out to see if it helped. I get the same behavior with that line uncommented and set to false.
Re: Odd Z-Probe Issue
December 09, 2018 07:26AM
Sometimes when flashing new firmware the old firmware data remains. The only way to remove this data is to do a Factory Restore from the New Firmware.

From Terminal mode send
M502 - Factory Reset
M500 - Save Settings

This can also be accomplished using the LCD
Click Select Control Click
Select Initialize EEPROM Click
Select Store Settings Click

And very seldom this sequence is required more than once.

Not much to keep this from functioning correctly.

Could be from configuring in pins_ULTIMAIN_2.h

If this does not work It could be a bad Z-Probe Sensor.
You can check this by simply unplugging the Z-Probe Sensor from the circuit.
Powering from a external source and testing to see if you can duplicate the problem.

Computer Programmer / Electronics Technician
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