uno R2

hey guys, I'm new here, looking at getting into micro controllers and so i bought an Arduino Uno R2, my question is how much slower is this one than the R3? What i plan on doing once i learn some coding, is to run a single fuel injector. ill get more detailed on that when the time comes. if you guys know some good projects to start with let me know.

thanks!

There are pretty much no differences between the R2 and the R3 - the main one is the additional I²C pins.

The chip is the same chip, running at the same speed.

Alright thanks. Thats good to know. the one i got came with a grab bag of components, didn't list what it came with but it looked like a decent start.