I am new to BT full stop, especially mating it to iOS. As I see it, my idea is quite simple, but I know I need to start with the hardware, then I can get an app coded to it.I am looking to build the attached. I have tried looking around and spoken to a couple of companies and am getting OTT quotes just to design the hardware, so thought I'd investigate myself. Any and all help would be appreciated.
i already hve an idea for the battery pack itself.
