I want to use the Arduino Uno to trigger a muscle wire that reacts to heat. Plugging the Arduino to a USB port could only generate a maximum of 0.5A through the wire and i actually need something around 0.6-0.8. I read here that if you plug the arduino to an external power supply with a higher voltage the current limitation might be higher. is it right? and if so, will it also apply to the PWM pins?
Thanks a lot