Could be power perhaps, or wiring disturbed when you attached the speak up board.
I'd try running the earlier code with the power & wiring as is. Might also be worth starting one of the motors in setup in the code you posted.
Could be power perhaps, or wiring disturbed when you attached the speak up board.
I'd try running the earlier code with the power & wiring as is. Might also be worth starting one of the motors in setup in the code you posted.