Are these pins being used by the board? I know they are not connected at the motor connections but I need to know if they are connected to any circuitry of the G540.
The reason for this is because I need to know if I can wire my motors to use my backup driver board which is unipolar and I need to find some unused pins to hook up the two extra wires. So I can use the G540 as a main, but be able to plug in my backup without rewiring the cable ends.
I asked this on the geckodrive forum a couple days ago, but it appears there is nobody monitoring it.