Hi,friends,

I want to control DC-motor for toys
application,I hope it can be controled
in rotation speed,but the torque do not
reduce,though it can use STEP-motor,but
it is too expensive.
i want to cut down the cost,so my idea
is use cheap chip (AT89C2051) to do this
application.
do you have experience for it.
the DC motor's voltage is 5v,it is small.the normal speed is 1800n/min.
I HOPE IT CAN CHANGE FROM 500-1800n/min

how to do it?

-John cason