I have the same problem as the OP: I think about cool things to build, look around to see if the different parts are technically possible, build prototypes for

I have the same problem as the OP: I think about cool things to build, look around to see if the different parts are technically possible, build prototypes for some of the parts and never actually put everything together in a working package. Once I know that this is possible, I tend to lose interest. So, recently, I've tried to change my mindset to what you describe and build something small, useful to me, and that I can finish fast enough that I don't have time to lose interest. And I have a few other bite-sized ideas to do once I'm done with that. (my current tiny project: http://logmeoutthx.com/ http://logmeoutthx.com/ I'm not so much interested in the thing itself as in completing it)