Common ground on Dan's 2A board?

I have a supply with -12, -5.2, +5, +24.
I have a Camtronics 2A board

Can I connect the three motor power connectors to -12 and +24 (getting 36v), and the board input (bypassing the 7805) to ground and +5, or is there a common connection between the two ?

Or, motor power lines: -12 and +24 for 36v
board input (not bypassing 7805) -12 and +5 for 18v

?

Would it be worth the hassle to go from 24 to 36 volts?


Richard Spelling, http://www.spellingbusiness.com/boats
From the muddy waters of Oklahoma



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