Thanks for the feedback. I have decided to go with a controller found on instructables, but replacing MOSFETs with a dual H-bridge, trouble is it can only supply a maximum of 1A and so i may end up using some form of transistor anyway, not sure yet, and the chances are it will never get past idea stage as with most of my ideas
. I would still be interested to know if the schematic above would work so i may give that a go sometime now that i have some diodes to hand.
As for an "all in one" stepper IC do you have any suggestions of a low cost driver. It does not have to be bipolar anymore however as several more printers have been destroyed since my first post and i have managed to find 3 unipolar motors.
Thanks again for your reply.
