mikerr wrote:It may "work" for a while with a small motor, but you may have drawn too much current from the Pi and blown a polyfuse
(it will recover if you wait)
there's not much current left after supplying the usb ports, best to use an external source for Vcc2/motor power as I said above.
I also didn't actually use 5v at all for the chip, I used 3.3v into Vcc1 to match the GPIOs
I don't think i blew my polyfuse as the pi kept working. It worked for a long time... I have no idea why after a long break, it just stopped. Only other idea might be that I destroyed my chips accidentally between when it worked until now. which has been a week or 2... I'm going to try with my arduino and if it works then its the pi's fault =/. My code is exactly the same and pins and such. ah so sad.
***Nope not dead.... arduino runs it fine