Modern Device Forum

Not your fault but I can't believe there is no existing documentation that lists, for each board, which physical pin is named what in software. It's so fundamental; how did anybody ever learn to use these boards?

I'll take your advice and look there. Thank you very much.

Ok, I looked at the Analog Input Pins page and it's great for the Duemilanove but the Mega, not so much.

" A/D converter
The Atmega controllers used for the Arduino contain an onboard 6 channel analog-to-digital (A/D) converter. The ...

OK, here we go again, I just bought a Mega.

The reason I bought it is that I have an application that requires more I/O than the Duemilanove has available.

So, I get the Mega and I immediately notice that it has two sets of pins numbered 0 through 13 (the sets for PWM and Analog In) and 2 sets of ...

Thanks for the quick reply and the info. As I recall other pins have different names in software than they do on the physical device. Hopefully this will be explained in wiring too.

I'm stumped, where's the map to for the physical pins to the software representations? For example, in the temperature library (LibTemperature as I recall) there are the statements:

"pinMode(16, OUTPUT);"
"digitalWrite(16, LOW);"

I assume this is setting a pin on the ATmega328 as an Output and ...