Topics created by foesi

@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.

@foesi If an input isn't tied to either high or gnd, it will be floating. That is to say, it'll be prone to picking up stray RF etc which can make it flip around from high to low or vice versa, somewhat at random. So you might get lucky with the input reading the correct value at the right time, or you might get unlucky. The end stop status is only read by the firmware during a homing move, so you wouldn't normally see this random flip-flopping.

@jay_s_uk You and I said the same thing, about the negative temperature coefficient. I said resistance is higher at lower temperatures; you corrected to lower at higher temperatures. 🙂

However, your statement about the value for a thermistor being specified at zero degrees is wrong. Most thermistors are standardized at 25C. Pt100/Pt1000 are, indeed, standardized at 0C. But it is still correct that the 100000 is the right number to have put in the file.

I recently got the new duet board and - it works fine now! Thanks for your help!
It must have been the SD-card socket. Now I can get on with my project - which is to make the Duet 3 mini 5+ my controller for a Tronxy X5SA-600.
Thanks again and all in all it was surprisingly convenient to get the new board.