Looking for advice on manufacturing a physical product
avrPhreaque: Do you have a NDA (Non-Disclosure Agreement)?   That is absolutely essential to protect you from someone just taking your idea and running with it.  With IP (Intellectual Property) Law, intent is a very important aspect, and an NDA signifies intent.There are numerous free resources on the Web which can help you develop a workable NDA.  If you email me at tjkeller@inebraska.com, I will reply with a copy of the NDA I developed for my product idea.As regards the development of your prototype, given the informatyion you have provided, it is going to be expensive using commercial services to get such a prototype fabricated.  This is because you don't have a designed and tested circuit from which the engineers can product printed circuit boards (PCBs) and finshed product from.Email me, we can talk further.Tom Keller
aka: avrPhreaque
tjkeller@inebraska.com