In terms of crowd funding announcement it was posted in the correct place, but in terms of getting early design or user feedback it would probably have been better if posted in either the test equipment or projects sections.
Contemporaneous double posts on the same topic are heavily frowned upon, but I think separate posts with design or similar questions and a later post about open sourcing or crowd funding the project would be OK. Ideally the second post would be many months later after you worked through the feedback, and it should link back to the design topic for reference and to reduce repeated questions.