the dude of dudes
New Member
Hello! I'm new to this forum (been lurking for a while). I've been working with a PIC to run a L298 as a dc motor driver (seems like its a common combination around here!), and am wondering about the best practice for powering them both. First I used the same power supply to drive the motors as the logic for both IC's. When the motors would start the power drain would reset the PIC (even with decoupling caps) so I decided seperate supplies would be a better way to go. A 9v to drive the logic and a 12v wallwart for the motors, 2-7805's and I'm in business. It seems to be a better way to go for sure. However, it does seem to be more complicated than it needs to be. Is there a 'best practice' for this combination of ic's? I imagine a more solid power supply would run them both without problems, but what do I need to focus on? Bigger caps, more amperage? Or do I have it right with running seperate supplies?