[archimag0]

Thanks for replying - I just wanted to dive in and get stuck into the levels, but found the UI so confusing that I just gave up - particularly as someone with no AVR experience, and with the tutorial dying half way through.

The biggest pain point was figuring out what was executing. As I mentioned, I would be playing around in the compiler, hit compile and save, and then attempt to run it in the debugger. The 'run' command either seemed to have no effect, or would run a previously compiled program, not the one I'd just written. Even typing 'reset' didn't help.

The memory didn't seem to be updating in real time either, which made things even more confusing!

Running in Firefox if that makes a difference.