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bidirectional motor control unit

Printed From: the12volt.com
Forum Name: General Discussion
Forum Discription: General Mobile Electronics Questions and Answers
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=93721
Printed Date: May 14, 2025 at 6:43 AM


Topic: bidirectional motor control unit

Posted By: socram
Subject: bidirectional motor control unit
Date Posted: May 08, 2007 at 12:12 PM

I need some help setting up my bidirectional motor control unit, so that I can make my dc motor rotate in either direction. I am using qbasic to control the motor and am using a power supply that is set to give out 12 volts. Any help is appreciated...



Replies:

Posted By: Big Dog
Date Posted: May 08, 2007 at 12:28 PM

What you need is to look at is how the two relays inverse the motor direction. Basically both motor wires rest at ground but when one or the other relay is activated, that motor lead gets 12V positive.

Here's an idea (connect the motor leads where it says "to actuators"):

posted_image


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Prepare your future. It wasn't the lack of stones that killed the stone age.



Posted By: KPierson
Date Posted: May 08, 2007 at 3:49 PM
You can also look in to using an H bridge, depending on how much current you motor is rated at.  If it is a higher current motor it would be quicker and easier to go with the relay setup above.  If it is a smaller motor the Hbridge configuration will take up less room in the car.

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Kevin Pierson


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