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bigtreetech / BIGTREETECH-SKR-V1.3

32bit board with LPC1768, support marlin2.0 and smoothieware, support lcd2004/12864, On-board TMC2130 SPI interface and TMC2208 UART interface no additional wiring is required
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Bltouch probe doesn't deploy/zero on G28/G29 #152

Open D-wooten opened 4 years ago

D-wooten commented 4 years ago

I've wired my bltouch probe into the Z_MAX port on my SKR 1.3, left the Z axis stop switch in Z_MIN, and changed the settings to match. The probe lights up, deploys, retracts, selftests, reacts to input, and I can get TRIGGERED outputs from all three axis stop switches and the bltouch probe on an M119 command when depressed. The Z axis stop switch will still work for a G28, but I can't get the probe to deploy when it is homing or when it is doing bed leveling. Removing the Z axis stop switch, putting the probe in Z_Min, and changing the settings back doesn't work either, still won't deploy on homing or leveling, though it reads as Z_MIN instead of Z_PROBE during an M119 command

My Configuration.h: https://pastebin.com/cBN5azqh My Configuration_adv.h: https://pastebin.com/y38BymYw

Zappa55555 commented 4 years ago

I have the same issue, but with an SRK1.4 board. At first the probe deployed and retracted at irregular intervals, even when the printer was idle. After compiling with the #define FAN_SOFT_PWM enbled, this irregular bahavior was gone. Even when i build with that option disabled after this, the irregular behavior did not return.

But although the BL Touch reacts to the M280 commands, when homing the Z axis it does not deploy.