Without more detailed information this is hard to debug. I would look at the following two things:
- Are you sure your communication pins aren’t conflicting with MOVI’s pins? MOVI uses pins 10 and 11 and they can be changed using jumpers.
- If it’s not 1) then it’s most likely a software thing. The double communication can be tricky to implement. You need to make sure that the Arduino main loop has instructions to talk to both devices. For examples, you definitely need a
movi.poll() command in the main loop to keep MOVI ‘alive’.
Let me know if this helped,