CDROM Bipolar Stepper motor to printer anchorage with SN754410

This is a simple circuit which uses a SN754410 Bridge IC to connect my Parallel printer port to a Bipolar stepper motor from a CDROM - the IC lets me give it 4 digital inputs which I can control as much as I want through the printer port. From here you can take another CDROM and make a mini XY axis for a laser burner/cutter or something else very small... Please ask me any questions and I'll try answering them, I'm not actually a electrical engineer or anything, but I know how stuff works so should be able to help other people who are also not properly trained :) I'm sure I'd be told off for not isolating my parallel printer port but I really don't care at the moment ;) The code I'm using is in Perl using the Device::ParallelPort; module, but you can use any language you are comfortable with, I probably wouldn't recommend Perl to others unless you are already a Perl programmer. (this chip I'm using is pretty similar to the L293D)



http://www.youtube.com/watch?v=CxflXl5l6gA&hl=en

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