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Motor and motor driver help

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husein06:
What motor drivers would fit these motors well? any idea

Hello,

I'm using this motor and an Arduino
Motor Ratings (at 7.2 VDC):
No-load Current: 0.27 A @ 310 RPM
Stall Current: 4.8 A
Max Torque: 4.6 lb-inch (5.3 kg-cm)
http://www.parallax.com/StoreSearchResults/tabid/768/List/0/SortField/4/ProductID/587/Default.aspx?txtSearch=motor+wheel+kit

Does anyone have a good idea about a motor driver that would work well with this motor?

Gertlex:
This is probably overkill, but I've used it.  You can also have it do PWM output, to reduce e.g. 11.1V LiPo voltage to effectively 7.2V for the motors:
http://www.pololu.com/catalog/product/707/specs

Pololu has lots of motor driver boards, so look through them there.  They're quality, but many may object to the price ;)

husein06:

--- Quote from: Gertlex on December 02, 2012, 02:36:07 PM ---This is probably overkill, but I've used it.  You can also have it do PWM output, to reduce e.g. 11.1V LiPo voltage to effectively 7.2V for the motors:
http://www.pololu.com/catalog/product/707/specs

Pololu has lots of motor driver boards, so look through them there.  They're quality, but many may object to the price ;)

--- End quote ---


But isnt the amp to high on those? the motors have 4.7 amp stall... the motor driver u suggested is  15 A continuous?

Soeren:
Hi,


--- Quote from: husein06 on December 02, 2012, 02:58:22 PM ---But isnt the amp to high on those? the motors have 4.7 amp stall... the motor driver u suggested is  15 A continuous?

--- End quote ---
A motor driver doesn't "send out" current, the motor draw what it needs (if possible).
However, you should limit the current to less than the stall value, or the motor may overheat (in case of stall) and burn some vindings.

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