Hello,
i wonder if someone might know.

i need to make a motor rotate in one direction then it the opposite direction everytime i send a pulse with a pic.

let's imagine i use pin ra0 of a pic16f684; i output 5v for 150ms to some mysterious/magical mcguffin ic, motor turns clockwise for 150ms. later i output again 5v for 150ms but motor will turn counter clockwise for 150ms.

motor has to change direction at every pulse and rotate for the duration of the pulse.

Does such cheap magical ic exist???

Thanks.