Motor Controller

Scooperman · Post by **Scooperman** » Mon Mar 01, 2010 6:41 pm

Hello,
I am sure that the answer to my question is somewhere here, but could you tell me what motor controller I should get to design a new antweight (at present I am using modified servos but want more speed)? Am am guessing a sabretooth but looking on Technobots don't know which one is best. Thanks

alasdair · Post by **alasdair** » Mon Mar 01, 2010 7:04 pm

If the design is using modded servos you dont need a controller...

Scooperman · Post by **Scooperman** » Mon Mar 01, 2010 7:06 pm

Sorry for the confusion, I am thinking of getting rid of the modified servos.

Post by **BeligerAnt** » Mon Mar 01, 2010 7:17 pm

The Sabertooth 2 x 5A is more than man enough for the job.

If the speed controller is rated at the stall current of the motor then it will handle the motor without any problem. A motor takes maximum current when stalled. In fact, antweight drive motors hardly ever stall because there is not enough traction available (not enough mass).

The 12mm motors normally used in antweights take significantly less than the 5A that the smallest Sabertooth controller can deliver.

BTW welcome to the forum!

alasdair · Post by **alasdair** » Mon Mar 01, 2010 7:26 pm

Oh, okay

The ones i recommend are sabretooth dual 5 amp radio control version from technobots.
http://www.technobots.co.uk/acatalog/Sh ... C_531.html

Scooperman · Post by **Scooperman** » Mon Mar 01, 2010 7:29 pm

Thanks that looks like the one I was thinking of

alasdair · Post by **alasdair** » Tue Mar 02, 2010 5:48 pm

They are very good, almost everyone uses them.

Orac · Post by **Orac** » Tue Mar 02, 2010 6:01 pm

I use the 10A version for my larger robots and can confirm that the Dimension range of controllers are superb.

(Just ordered an extra one from the same website and mine arrived quickly within 2 days.)

alasdair · Post by **alasdair** » Tue Mar 02, 2010 7:42 pm

Thats very helpful Orac.

I was trying to find a good featherweight robot speedo, and i thought of that!

Orac · Post by **Orac** » Tue Mar 02, 2010 9:46 pm

Ha-ha, just concurring that the Dimension range is a good one