# Problem with Ardumoto Shield

**URL:** <https://community.sparkfun.com/t/problem-with-ardumoto-shield/43032>\
**Category:** Robotics\
**Created:** [November 8, 2021, 10:26pm UTC](https://community.sparkfun.com/t/problem-with-ardumoto-shield/43032 "2021-11-08T22:26:24Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![tomcbride](https://avatars.discourse-cdn.com/v4/letter/t/3ab097/32.png) [@tomcbride](https://community.sparkfun.com/u/tomcbride)\
**Post date:** [November 8, 2021, 10:26pm UTC](https://community.sparkfun.com/t/problem-with-ardumoto-shield/43032/1 "2021-11-08T22:26:24Z")

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I’m trying to drive a couple of dc motors with an Ardumoto shield connected to a Redboard. The A side works fine (forward - backward) but the B side will only spin the motor in one direction. When the B side is activated, forward or backward, both the blue and yellow LEDs light up. Suggestions?

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**Author:** ![YellowDog](https://yyz1.discourse-cdn.com/sparkfun/user_avatar/community.sparkfun.com/yellowdog/32/1782_2.png) [@YellowDog](https://community.sparkfun.com/u/YellowDog)\
**Post date:** [November 9, 2021, 2:51am UTC](https://community.sparkfun.com/t/problem-with-ardumoto-shield/43032/2 "2021-11-09T02:51:42Z")

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The blue/yellow LEDs indicate polarity and if those are changing, the shield is reversing direction. You might double check your motor, it might only work in one direction.