newbie question about motor control

theloneduck

I have a couple of motors (http://www.allelectronics.com/cgi-bin/item/DCM-231/search/FAN-COOLED_6-12_VDC_MOTOR_.html) that are 6-12 volt dc motors.· problem I have is how to control the speed of the motors.· I am thinking that the hb-25 motor controller(http://www.parallax.com/detail.asp?product_id=29144)·would work but I want to make sure before I shell out the cash for it.

alternatively, I think the Motor Mind B (http://www.parallax.com/detail.asp?product_id=27961) might work though the optimal amerage from the motors will be fairly close to the max for the Motor mind b.

I plan to power the robot with a 12 volt 7 Ah rechargable UPS battery.

I was wondering if anyone has any experience with either of these controllers and could they share their experiences.· Any one wanting to add their $0.02 also.

TIA,
TLD

theloneduck

sorry, this would also be controlled via a BS2

Mike Green

1) The HB-25 is larger and handles much more current than you need for your project. It looks like a servo motor to the microcontroller.

2) The Motor Mind B is now the MMBe and has a continuous current capacity of 1.75A which looks like more than you will need. It's controlled via a serial channel and is much more sophisticated than the HB-25 in terms of control of the motor, let alone being smaller.

StampNut2

theloneduck: Check out my tutorial on my generic robotic base , it has the HB25 controller you are talking about. robosapienv2-4mem8.page.tl/

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Never give up when things go wrong.

D Faust

Good reading: http://forums.parallax.com/showthread.php?p=643103

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