Problem sending data to the laser!

[WillAdams (William Adams (Carbide 3D))]

To revert to Grbl 0.9 so that you can use Carbide Motion 3 and not need homing switches please see:

GRBL 1.1 and Carbide Motion 4

Rolling back to 0.9 is no longer supported, but the bulk of this post is being left in place for reference. Re-flash First, download a utility for this (see below for further documentation and an alternative using the SDK) see: Flashing Grbl to an Arduino · gnea/grbl Wiki · GitHub Hex files are no longer available When you launch the utility, Choose atmega328 UNO as the target, 115200 as the baud rate, and the attached hex file (click the button with the three dots to navigate to where you sa…