Thanks Will and Edward, the trick to lock the motors give me the plan to drill the PCB. When the first gcode file finished (etc) then drive to 0,0,50 (mm) and change the tool. The Steppers hold very good and my Drivers was warm but i think only handwarm.Will Winder wrote:This is now a default feature in the latest version of GRBL (0.8c), just set "$7=255". More details are here: https://github.com/grbl/grbl/wiki/Configuring-Grbl-v0.8edwardrford wrote:The trick is to lock the motors when you're doing a tool change. Right now the motors are only activated when they are running. There is a thread about a hack for grbl that keeps the motors enabled all the time. That might help. I believe atomsoft posted it.
First a little video:
http://www.youtube.com/watch?feature=pl ... gz1tyozCqk