BasicMicro

I think I understand... I think you're saying that the center of the universe here, with respect to ground, is the Roboclaw. Thus connect the main battery only to MB(+/-) on the Roboclaw. And the logic batteries to (+/-) on the Roboclaw. And the logic batteries (+) to 5v stepdown regulator, then to ...

thank you. one related question to wiring.. My concern is possible ground loops. In the drawing, the yellow dashed lines show the two ground paths. One path is the grounding to all the logic batteries and logic (Pi & Claw). The other is grounding for the main battery. I tried to keep logic wirin...

Recently purchased a Roboclaw 2x15.

-- how do I determine what board version I have?
-- how do I know if I have safely / correctly wired it so that I can use a separate logic battery?

-- what happens if the logic battery is a lower voltage than the main battery?

thank you