How to reverse motor direction

[weheh]

I want to get the GRBL to mirror motor direction in the x-axis. I thought $7=001 might do the trick, but I don't know how to set $7 in the Universal Gcode Sender software. Any help appreciated. Thanks.

[WillAdams]

Just send

Code: Select all

$7 = 1

to the machine and it should make that change.

To verify, send

Code: Select all

$$

Please see https://www.shapeoko.com/wiki/index.php/Grbl for further details.

[weheh]

OK, got this one figured out, too. The doc says $7 is the setting for inverting motor directions, but in actuality, the firmware says $3. I set $3=4 and everything is hunky-dory. Thanks.