Greg's X-Carriage with BLTouch

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To use with the BLTouch auto-leveling sensor for 3D printers, follow these steps. Print and update Marlin if you're using it. If not, I'm unable to assist. Edit the Configuration.h file with these changes: Under Mechanical Settings, ensure that Z_MIN_ENDSTOP_INVERTING and Z_MIN_PROBE_ENDSTOP_INVERTING are set to false. Under Bed Auto Leveling, uncomment #define AUTO_BED_LEVELING_FEATURE. Change X_PROBE_OFFSET_FROM_EXTRUDER to 40, Y_PROBE_OFFSET_FROM_EXTRUDER to 0, and Z_PROBE_OFFSET_FROM_EXTRUDER to -4.35. Under R/C SERVO support, uncomment #define NUM_SERVOS 3 and #define Z_ENDSTOP_SERVO_NR 0. Change the values in the last braces of #define SERVO_ENDSTOP_ANGLES to {0,0}, {0,0}, {10,90}. To prepare for bed level probing, do a G28 command first, which homes X and Y axes. Then, issue a G29 command to execute the bed level probing. Console commands for BLTouch: M280 P0 S10 pushes the pin down, M280 P0 S90 pushes the pin up, M280 P0 S120 runs self-calibration, and M280 P0 S160 releases alarm.