A4988 - Tie gnd's together or isolate

Just working on setting up a board using the A4988 carrier board and my initial design has the motor and logic grounds tied together and I just thought that maybe this isn’t as obvious of a choice as I initially thought. Any input on tying the grounds together versus isolating?


Hello, Jeff.

The grounds on the A4988 carriers are connected on the board, so it doesn’t matter whether you connect them externally.

- Kevin