This is an Arduino UNO's shield to connect Trinamic's stepper motors drivers for silent movements.
GRBL 1.1 > Arduino UNO > Trinamic's drivers.
D-SUB 9 connectors compatible to Colinbus Profiler. Except the connection for a laser engraver, its a new one.
Power supply, original from Colinbus, +40V ~ +10V and +5V.
The only electronics that remains from the original "Profiler"
- Filters for limits switchs ?
- Mechanical attachement (holes)
I don't found the "todo" feature into CM.
"TAB" don't select the complete track, like in Altium.