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Posted by kitmor on March 25, 2006, 11:13 pm
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Hi all,
I am moving up to these motors from the Robot Store.
http://www.robotstore.com/store/product.asp?id=810&catid=1565
So what motor controller should I use with these motors, and an OOPic
microcontroller. I was looking a an Lynxmotion Dual "H-Bridge Motor
Driver", or the "L298 Motor Driver Dual H-Bridge Electronic Kit" from
Solarbotics. Are the other controllers that would work better for this
purpose.
Thanks a Million
-Kit
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Posted by pogo on March 26, 2006, 2:33 am
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> Hi all,
> I am moving up to these motors from the Robot Store.
> http://www.robotstore.com/store/product.asp?id=810&catid=1565
> So what motor controller should I use with these motors, and an OOPic
> microcontroller. I was looking a an Lynxmotion Dual "H-Bridge Motor
> Driver", or the "L298 Motor Driver Dual H-Bridge Electronic Kit" from
> Solarbotics. Are the other controllers that would work better for this
> purpose.
Looks like the Lynxmotion Dual H-bridge can handle the motor just fine as
long as the current doesn't exceed 2 amps. The Solarbotics kit looks good,
too, but make sure your skills can handle the kit.
If I were buying these motors, I'd want to know what the current is with the
motor stalled, too, and make sure the controller could handle that also.
Wait on other responses to your post to make sure I am telling you right!
Parallax has some nice motor drivers, too.
Hope that helps!
JCD
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Posted by mlw on March 26, 2006, 7:40 am
Please log in for more thread options kitmor wrote:
> Hi all,
> I am moving up to these motors from the Robot Store.
> http://www.robotstore.com/store/product.asp?id=810&catid=1565
> So what motor controller should I use with these motors, and an OOPic
> microcontroller. I was looking a an Lynxmotion Dual "H-Bridge Motor
> Driver", or the "L298 Motor Driver Dual H-Bridge Electronic Kit" from
> Solarbotics. Are the other controllers that would work better for this
> purpose.
> Thanks a Million
> -Kit
I took a look at the specs, and what it doesn't show is stall current. That
is sort of the most important aspect, if the motor stalls and will sink
more current than your drivers, you may have a pretty nice smoke show.
The motor voltage range is 3 to 12 volts, stall current is largely limited
by the internal resistance of the motor windings. (inductive current
hysteresis exceeded). As such, stall current could vary quite a bit, but if
the H-Bridge circuit you choose offers "current limiting" you should be OK.
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Posted by Gordon McComb on March 26, 2006, 12:04 pm
Please log in for more thread options The L298 bridge has current sense inputs, and if you use them (they're
optional) you can protect against the motor pulling too much current.
The chip also has overtemp protection that forces it to disable itself
should it exceed a pre-set temperature.
The motor you reference is the fairly common Chinese-made motors often
used in robotics, as is the L298. Haven't heard too many people say this
combination has resulted in smoke, but if it does in your case, be sure
to post! <g> In any case, you'll want to attach a heat sink to the chip
should you notice it getting too hot.
-- Gordon
kitmor wrote:
>
> Hi all,
> I am moving up to these motors from the Robot Store.
> http://www.robotstore.com/store/product.asp?id=810&catid=1565
> So what motor controller should I use with these motors, and an OOPic
> microcontroller. I was looking a an Lynxmotion Dual "H-Bridge Motor
> Driver", or the "L298 Motor Driver Dual H-Bridge Electronic Kit" from
> Solarbotics. Are the other controllers that would work better for this
> purpose.
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Posted by Francesco.Decomite on March 27, 2006, 3:47 am
Please log in for more thread options kitmor a écrit :
> Hi all,
> I am moving up to these motors from the Robot Store.
> http://www.robotstore.com/store/product.asp?id=810&catid=1565
> So what motor controller should I use with these motors, and an OOPic
> microcontroller. I was looking a an Lynxmotion Dual "H-Bridge Motor
> Driver", or the "L298 Motor Driver Dual H-Bridge Electronic Kit" from
> Solarbotics. Are the other controllers that would work better for this
> purpose.
> Thanks a Million
> -Kit
>
what about TC4427A from microchip ?
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> I am moving up to these motors from the Robot Store.
> http://www.robotstore.com/store/product.asp?id=810&catid=1565
> So what motor controller should I use with these motors, and an OOPic
> microcontroller. I was looking a an Lynxmotion Dual "H-Bridge Motor
> Driver", or the "L298 Motor Driver Dual H-Bridge Electronic Kit" from
> Solarbotics. Are the other controllers that would work better for this
> purpose.