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Posted by John Nagle on November 5, 2006, 2:02 am
Joe Strout wrote:
> hellodude17@gmail.com wrote:
>
>
>> i am still novice to this field of robotics. we are
>>designing micromouse. but we are facing problem in chasis designing. as
>>you can predict we need to change speed of micromouse during turning
>>and make it to halt also when there is no forward path. for all this
>>purpose i am thinking of gears.
>
>
> No, you don't change gears to change speed. You just drive the motor
> differently. Get yourself a motor controller -- I recommend the Pololu
> Micro Dual Serial Motor Controller, reviewed here:
>
> <http://www.strout.net/info/robotics/tutorials/Pololu0410.html>
No encoder. The wheels won't stay synchronized. Without an
encoder, it's hard to get a two-wheel-drive device to go straight.
Pololu does make some motor controllers with encoder inputs,
but wierdly, they just take single pulses, not quadrature.
Jameco has a little motor controller with quadrature inputs.
And Acroname has the WheelCommander, which is specifically
designed for two-wheel drive robots.
http://www.acroname.com/robotics/parts/R279-WC-132.html
They also have all the other parts for this, at a moderately
expensive but not outrageous price.
John Nagle
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> i am still novice to this field of robotics. we are
> designing micromouse. but we are facing problem in chasis designing. as
> you can predict we need to change speed of micromouse during turning
> and make it to halt also when there is no forward path. for all this
> purpose i am thinking of gears. basically i have a 6 tyre design in
> which middle 2 is used to drive the wheel and rear and front tyres are
> for turning(for forward and reverse path). but i don't know how to
> command the gears through software. in my program micromouse would stop
> when there is no forward path. it means its speed gradually reduces to
> zero. then how do inform the motor that you have to change the gears to
> slow the speed.
> don't mind Is there any interfacing of gears with
> microcontrooler?