darkar said:
There is another quesion, in order to invent something new, u are suppose to keep the idea secret, but should u discusss it with some other ppl to see wheter it may works or not?
Look, if you really get serious about all of this the thing to do is to obtain good
non-disclosure and
Promise not to Compete agreements, and require that anyone you involve must sign them. Otherwise the problem is that any friendly agreements void of good legal definition tend to dissolve if and when
real money gets involved.
Of course, the other problem is that if
real money does come along, defending these agreements later can be tremendously expensive. Large companies are famous for running the little guy out of money in court while they saturate the market.
I would also note that most ideas are not worth all of the effort. Any invention requires a tremendous investment of time and usually money. This investment must be made completely on faith and best guesses, so you need to be very selective about where you
risk your time. Think about the economics and marketing before you get serious about engineering or development.
A great example of some risk management in this regard is found in the practices of some [many

] small, specialized circuit design companies for industrial components and control modules. One in particular developed a "hockey puck" style module that is used in nearly every restaurant and bar in the country. They have an entire catalog of very select products, very specialized stuff, which is tantalizing for certain applications. After working with this company for awhile one discovers that most of the advertised modules have never been built; or even designed. They are only designed and built once a large order is obtained - like hundreds or even thousands - or once someone is willing to pay for a small production run which, for obvious reasons, is very expensive per unit. Of course they will only admit all of this when you back them into a corner. To cover themselves [legally] they still guarantee the six to eight weeks for delivery for X number of units, as advertised.
Late edits.