Cross roads, now I'm confused..
I thought you had a board, kinda' like the Uno with more RAM & goodies for about $80-ish. And my hope was I could select a different chip with my IDE, load my program and be done.
How close am I? What is this talk about raw PC boards and what is this github thing?
And, wasting RAM doesn't make code slow. Its poor algorithms that makes code slow. Unless, of course, the OS starts swapping to disk. Then your going to be slow..
-jim lee