Hey guys, I have a couple of questions and would like to find the answers to them. I have a arduino 2009 and I'm still programming with it.
My question is how do I use the analog pins on my arduino. Is there a guide for it?
Also, if I can, can I change the function of the analog pins into digital pins?
What's the different between PWM digital pin and digital pin?
Thanks,
Look at these two for Analog inputs:
http://arduino.cc/en/Reference/AnalogRead
PWM:
And don't forget the examples that come with the arduino software!
The difference between a PWM pin and other pins is that the PWM pins can do PWM, as indicated by the label PWM. PWM in this case is hardware PWM, not software PWM. The chip has dedicated hardware that deals with creating the PWM on its own, you just tell it to do PWM and it happily spits out a PWM signal on those PWM pins. This doesn't cost any additional cpu time.