As a hobby (or learning project), I'd say: sure, go for it, have fun.
If you're planning on monetizing it, well.....
In general there a some hard parts to component search:
- getting complete and accurate data
- setting up a system to store that data in a smart way
- setting up search on arbitrary attributes (text and numbers)
- creating a UI on top of all that
We've been working on the problem of part search for the past few years and we'd be happy to talk.