BL-Touch M402 and M280 P0 S90 do not retract pin
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Hello,
I have a Duet Wifi 1.04 with RRF 3.2.2 and use a BL-Touch as a z-probe.
The BL-Touch has been working for a few month until a few weeks ago I needed to replace the pin because some warped ppsu just got into the way of the pin...
I tried to replace the pin... no difference
Then I tried another BL-Touch that I had for just that case and it didn´t work too.
I adjusted the screw in the BL-Touch so that the pin gets retracted at the self test when power is on.The BL-Touch started blinking red after self test... I tested all the wires - everything fine.
Then I put the M280 P0 S160 at the end of config.g - after that the blinking is gone.
When I try the M401 the pin gets deployed and then it starts blinking red - same is for M280 P0 S10.
After that I used the M402 command to retract the pin... and it didn´t work - exactly the same happens with the M280 P0 S90.The M280 P0 S160 retracts the pin and gets the red LED to flash steadily.
So i it can push the pin up and down by itself - but why not with M402?
Why does it blink when using M401?Any suggestions are appreciated!
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So you've replaced the BLtouch entirely and it still has issues?
Did you also adjust the grub screw for the pin on the new one? It sounds like it might not be positioned correctly. -
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@Phaedrux I tried to position the screw in a position where the test at power on just gets the pin back up in retracted position.
I can´t get the screw in the position as mentioned in the antclabs documentation - because then the pin would not get back up.
And I also used magnets to get the pin magnetised.
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@Herve_Smith these files look exactly the same on my sd card and the config.g M950 and M558 are the same as yours.
Remember that the BL-Touch had been working for a few months.
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@foesi said in BL-Touch M402 and M280 P0 S90 do not retract pin:
@Phaedrux I tried to position the screw in a position where the test at power on just gets the pin back up in retracted position.
I can´t get the screw in the position as mentioned in the antclabs documentation - because then the pin would not get back up.
And I also used magnets to get the pin magnetised.This makes it sound like there is something wrong with the BLtouch.
