Arduino Digital Pen

For my first major project, I am trying to make a digital pen using and accelerometer and gyroscope. Is there anywhere online that has resources? or algorithms for differentiating letters?

Thanks

What is a digital pen? What is it supposed to do?

thekjarthur:
or algorithms for differentiating letters?

Do you mean that you want to be able to wiggle the pen around in the shape of an F (say) and the software will put a character F into a document?

I can't imagine an Arduino having the processing power do get remotely close to that.

...R