Alternating direction of small dc motor.

po2le

Using a BS2,is there a way to reverse the direction of rotation of a small (hobby size, 3 to 4.5v) dc motor.
A Tamiya motor used for small hobby cars, etc.· I would like it to rotate CW for a short while, then reverse rotaton (CCW) for a short while.· I know that BS2's can toggle outputs from high to low, but the voltage to the input of the motor would have to be reversed from one time to the other.·

How about connecting the 2 motor leads to two different output·ports on the BS2, one high the other low for a couple of seconds, then reverse the ports: low to high, the other high to low·?

thank you
po2l

Franklin

An H-bridge is what you want. You could build something with discrete transistors if you wanted to but the stamp would probably not have enough power to drive the motor directly.

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- Stephen

po2le

Thanks for the information.
Where can I find an H bridge to control a small hobby dc motor? I'm not the world's greatest solderer.

po2le

Where can I find an H bridge to control a small dc motor?

Does Parallax have them?

Beau Schwabe

po2le,

Sounds like the best fit for you is going to be our Micro Dual Serial Motor Controller .· It will allow you to independently control two motors up to 1 Amp.

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Beau Schwabe

IC Layout Engineer
Parallax, Inc.

LoopyByteloose

Beau,
That is a very nice little unit. I have been building my own Tilden Beam H-Bridges but the foot print is much larger and only manages 100ma or so.

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