$50 robot motor

[shreyansh]

if i m using simple motor in $50 robot inplace of HS-311 servo i need to change the software or not


thanks

[altapowderdog]

if you use a speed controller to drive your motors that accepts servo inputs such as a sabertooth like this, then you should not need to alter your code.  The speed controller connects just like a servo, and drives your motors in the same way that a servo modified for 360 rotation would rotate. 

http://www.robotmarketplace.com/products/0-SABER2X5-RC.html

Im not sure if this is what you are asking- but I hope that helps.  You will need another power supply to power a speed controller.  For motors I would check out the solorbotics gm9 motors:

http://www.solarbotics.com/products/gm9/

A combination of two of those motors and a speed controller will behave exactly like servos modified for continuous rotation.