To find out if the idea is new:

- Do a thorough Google search for relevant keywords. Depending on the idea, an image search might help.
- Do a search on Google Patents (https://patents.google.com/) too.
- Ask in relevant subreddits (https://www.reddit.com/subreddits/search) if they know of any products that do xyz
- Go to relevant local meetups (www.meetup.com) and ask them too

To find out if the idea is feasible:

Talk to someone with extensive multidisciplinary engineering knowledge. If you get a "no", ask a couple more people before you give up; sometimes it just requires an imaginative solution to make something possible.

I have a lot of experience in coming up with creative multidisciplinary solutions to hard problems, so I can help with the feasibility part if you want. I can also help you analyze any existing related patents. I have three biotech patents pending, so I've gone through all that before.

in any case, best of luck,

Lee