Hello I have a Duemilanove with ATmega328. Can I remove that chip and load sketches onto a ATMega168? If so is that all I need to do? I want to rearrange the code on my Bleep Labs Nebulophone, and want to leave the original chip and source code intact. (I know the Nebulophone has rst rx and tx nicely spaced for a 3 pin header and could use this to update the code, but I don't have the 3 pin header and want to have a back up chip) So I bought a couple of these chips (ATMega168 but 20PU). Also I am trying to get a seeedstudio music shield to work with the supplied code and Arduino 22 will successfully compile the code for Duemilanove w/ 168 but not for Duemilanove w/ 368 so I want to try that too.
Will these things work with the basic knowledge I have or is there some details I have overlooked?
Could anybody reassure me that ATMega168 10PU and 20PU chips would work interchangeably in this application. Is the 9v typ input voltage would be within the acceptable range of both?
I am also looking to buy more Arduinos and want some encouragement to get a mega. I guess the question is... ...Is this ambitious or overkill as I am a total beginner but tend to obsess about hobbies. I am currently making toys and music making projects but robots and things are not out of the question. Thanks