I’m not sure what I did to get it running properly, but it works fine now. $110=2000.000 (X-axis maximum rate) By clicking “Sign up for GitHub”, you agree to our terms of service and GRBL ist eine Firmware für den Arduino (Uno/ATMega328) Ab 2009 vom Norweger Simen Svale Skogsrud entwickelt Aktuelle Version : 0.9j (unter GPLv3 Lizens) GRBL interpretiert standardisierte Gcode-Anweisungen von der seriellen Schnittstelle und erzeugt daraus entsprechende Steuerimpulse für Schrittmotortreiberstufen. $13=0 (Report in inches) Homing fail occurs in two scenarios. $22=1 (Homing cycle enable) What GUI are you using, and did you upgrade it? PWM SUPPORT. If you are not seeing the above image, you may see the following image below: BUT still no luck :( Grbl's system commands do things like control machine state, report saved parameters or what Grbl is doing, save or print machine settings, run a homing cycle, or make the machine move faster or slower than programmed. $131=420.000 (Y-axis maximum travel) When running the homing sequence the Z axis switch activates but the machine does not stop. To set up how your homing cycle behaves, there are more Grbl settings down the page describing what they do (and compile-time options as well.) leezilla @leezilla. Also, this description "... the motors kick up and move slightly but then give out a high pitch noise and freeze." $121=500.000 (Y-axis acceleration) $4=0 (Invert step enable pin) Switching the x and y pins worked. $112=10000.000 (Z-axis maximum rate) If axis moves one or both direction and "crash" to the fisical limit without stops, and "homing fail" appare some seconds later from when you press homing button, it means that your switch is not well connected (seen as always not pressed). since you are getting a "hard limit" error now, instead of "homing fail" we are making progress. Grbl swapped these pins (z-axis limit, spindle enable) several years ago and some CNC shields are not designed for this. The take advantage of the homing switches on your Shapeoko CNC router, homing will need to be enabled in the machine control software Carbide Motion. So, it is now understood what a GRBL is! I tried homing again to get soft limits working, the Z carriage went to the top and did not want to stop, the motor was still running ., and then nothing, maybe the limit switch is not working, how do I get the Z carriage to stop at the top and continue homing The X axis moves to the right for the positive direction and to the left for the negative direction. Change $27 to =5 and try again to verify. CNC Shield & GRBL combinly works very preciselyIt is loaded with very useful GRBL+CNCV3 shield+Arduino based CNC machine . $31=0 (Minimum spindle speed) One flashed you cannot edit the config.h settings. #define HOMING_CYCLE_1 ((1<