LaserGRBL implement a sort of emulation of this protocol but their protocol is buggy and undocumented, so expect issue. This is most easily accomplished by simply disconnecting GRBL panel from the machine and reconnecting. I was able to find out my board is running grbl 1.1f, but I'm not sure if the Mini is a custom source that may be worth updating or not. $10=1 (Status report options) How far does it need to be pushed in order to make connection? $121=500.000 (Y-axis acceleration) My X, Y and Z endstops are connected as NC. GRBL has a list of internal variables which must be customized for the machinery connected to the controller. 2 Posts. Then jog to the middle of the machine travel and start a homing sequence. 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. Hi everybody, ive finally had time to try this again. Hopefully user error, but I'm stumped on the issue. As I use F200 when jogging manually and the motors seem to handle this nicely. So, it is now understood what a GRBL is! $10=18 (status report mask:00010010) Also unplugged the limit switches, once I go to run the $H the motors kick up and move slightly but then give out a high pitch noise and freeze. https://github.com/gnea/grbl/wiki/Wiring-Limit-Switches, https://github.com/gnea/grbl/wiki/Frequently-Asked-Questions#homing-cycle-isnt-working-right-the-movements-are-all-going-in-wrong-directions-or-its-not-stopping-when-hitting-the-limit-switch, https://www.google.it/search?client=opera&q=grbl+homing+fail&sourceid=opera&ie=UTF-8&oe=UTF-8, https://github.com/gnea/grbl/issues?utf8=✓&q=is%3Aissue+homing, https://www.google.it/search?client=opera&q=grbl+limit+switch+noise&sourceid=opera&ie=UTF-8&oe=UTF-8, I didn't put any pull up resistor or filtering capacitor, I'll try it first, thanks for helping me, For NO I suggest the schematic NO with noise filtering, Thank you for your suggestion, I'll try it. GRBL 9J will not execute the S commands in real time when raster laser engraving using S commands on every line of gcode. $110=10000.000 (X-axis maximum rate) It was the special release of GRBL from open builds I had loaded. $3=3 (dir port invert mask:00000011) The X axis moves to the right for the positive direction and to the left for the negative direction. $5=0 (Invert limit pins) Ok. here’s my parameters in my GRBL firmware. $132=200.000 (Z-axis maximum travel). You can also get out of this state by clicking on the padlock icon in the Control section of Candle to unlock the machine. You could be right.. it makes sense. $120=500.000 (X-axis acceleration) It should start to move but you will have to execute a reset to stop it before it crashes into the limit switch. Ok thankyou, will give it a try in the morning & let you know how i get on. I usually use the version that home X and Y the same time: seems to me that though the switch works when YOU push on it, it does not work when the axis pushes on it. Thx @arkypita. I tried to change the line #define HOMING_CYCLE_0 ((1<