@josegerdes said in BLTOUCH ERRO ON 3.4.0beta5:
M558 P9 C"^io3.in" H5 F120 T6000 ; set Z probe type to bltouch and the dive height + speeds
Remove ^ from pin name. Pull up resistor should not be set. See https://duet3d.dozuki.com/Wiki/Connecting_a_Z_probe#Section_Software_setup_RepRapFirmware_Num_3
So:
M558 P9 C"io3.in" H5 F120 T6000
If the probe doesn’t deploy with M401 and retract with M402 (your deployprobe.g and retractprobe.g look correct), check your wiring, particularly the orange wire, which controls the pin deployment.
Ian