Hi. I have Arduino board and DC motor shield DRV8835 with 2 3-6 volts motors with encoders. What is the right way to power this system with 9.7 volt accumulator? Are any extra parts needed or I can power Arduino and DRV8835 in parallel?
I am asking because if I power it through Usb, the shield is also somehow powered and the system works slowly but properly. And if I power it with 9v accumulator (not a small battary! ) , it works improperly.