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!