hello,
i am making a micromouse and is using a typical 9v bipolar stepper motor.
Can anyone tell me which motor driver is best for my stepper motor.
I am confused between L298 and ULN2003......
pls help..................

 

Please do not hijack another users thread. You appear to be asking this question elsewhere, please keep all questions of a similar nature in one place so things do not get confusing. Thanks.

Dave

 

Hi.
Your stepper motor is Bipolar so you must change phase(polarity) of your wires continuous and ULN2003 is just an open collector with 7 channel when get High pulse in his input pins produce Negative(gnd) polarity so you cant use this to drive bipolar stepper ranged with high ampere,but l298 is two H-bridge ic that can control two dc motor in two position it means that you can change it's output polarity(+ or -) so it's the best choice for you also it gives 4 amp output current whereas ULN2003 gives 0.5 amp.
but if you use Unipolar stepper motor u can also use ULN2003 ,while it is cheaper than L298, isn't it?

 

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