How hard would this be for a starter?

Noddy:
I like the external memory idea. Its small, and there's no need to keep a computer around. I'm trying to build just a gadget, not to prepare a room in my house to research my sleep, so I'm not going to keep computers turned on or having complicated sensor schemes around. I want to be able to carry it around.

cr0sh:
What do you mean by "stack of Lilypad"? I'm going to need more than one board?

Stanley:
Thanks for the tip on the clock. Nice blog also, I will read it later.