Adafruit motor shield

I have the adafruit motor shild connected to 4 motors that accept from 3 - 9 V. Im kinda new to arduino and i dont know what voltage i should connect to the shield. Also if i dont provide the dc motors with enough voltage they start not functioning and making weird sounds. How would i control the speed of these motors?

Thank you!

I would connect 9-12V to the shield. At the higher voltage, make sure you don't drive the motors to 100% but pick some lower value that doesn't overheat the motor. If each motor is different, you may want to use a different maximum for each.

Make sure you are not using 9 volt battery (smoke alarm type) to power your 4 DC motors. It wont work as it supplies less current. Use 6 AA size batteries in series and you will be good.

I am also a beginner and made a mistake to power 9 volt to motor shield. All I got was just a humming of motors but no movement.

Welcome to the forum.

Please read the first post in any forum entitled how to use this forum.,148850.0.html

Can you tell us your electronics, programming, Arduino, hardware experience?

Thanks.. Tom... :slight_smile: