blueroomelectronics said:
Try a SN754410 1.2A drivers, with diode clamps.
Didn't we sort this out already? I'd thought we'd come to the conclusion that you could get 2A per chip, and that diodes were not required (because they're included on the chip - but maybe that's what you meant)?
Krumlink, you need to loosen up and share your ideas for your walker robot. It's easy to be tempted into coveting ideas, for fear that someone might "steal" them (or accuse you of stealing them), but that fear has a false basis.
Strangely enough, you're much more likely to come up with an original idea the more you share it with others. Also, by posting your work and process on this forum, you can establish precedent for your ideas by way of witnesses should the originality of your project be called into question.
Think of sharing your ideas as a type of pre-emptive protyping. Everyone has their own perspective, so when you share ideas with other people there's an opportunity there for people to point out how things can fit together in a way you otherwise might not have thought about. That's a bonus, not a threat, to your inventions. I'm blown away by how many times the way around a seemingly insurmountable task for me has been elucidated by someone with a simple solution, just because they were able to see what I was trying to do from a different point of view. That's the benefit of collaboration, and that in turn is the virtue of getting along with other people: the sum of collective minds tends to be greater than the parts.