I am still mystified by the alarm error I get when I when movement starts, or homing is started and one of the limit switches is active. GRBL tells me to enter $X and $H to reset. But it just locks up lightburn.
Only way I found to reset is to shut down LB and restart.
I am using a ACRO 1010 machine with the spark concepts ver 4 cnc driver/controller board, and straight GRBL.
I have tried the reset button on the controller board, executing $X|$H. I do not see or can not find a connect/reconnect spot in LB.
I know I’m old, must be getting blind too.