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Topic: motor bi-directionality issue (Read 989 times) previous topic - next topic


I have one of these (http://www.goldmine-elec-products.com/prodinfo.asp?number=G17949) motors connected to an H-bridge. It's part of a pulley system that lowers an object up and down on a string. It lowers the object down just fine; however, whenever I try to lift it back up again, the object gets stuck very easily, and lately the motor has begun to make a strange noise that I instinctively sense it should not be making.

Does anybody have any clue why? I'm running it off of the 5v supplied by the arduino.


Here's a photo of my setup, btw.


I'm running it off of the 5v supplied by the arduino.

Sounds like the first thing to try is more power, your motor likely needs more current than the arduino can provide when it's working harder (lifting). Also, it can take a rather higher voltage.


How would I do that if my whole H-bridge is connected to the Arduino? Could I use a 9v battery? How would I do that without messing up everything that's connected to the Arduino?


Can I just power the entire arduino using 9v?


Can I just power the entire arduino using 9v?

Maybe for a minute or so. H-bridges usually have provisions for using an external power source for the gizmo being powered. 9v might be ok for only the arduino, but bigger batterys are needed for motors.
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"Current drain unloaded is 0.46 Amps at 12VDC."

What H-Bridge are you using to power this motor?
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