What I need is a piece of hardware transmitting a constant high pitch tone not hear able to humans that send info.
This sound would have to trigger an app or be detected when the app is opened.
The device would have to be able to be plugged into the wall socket.
You should be able to change the tone when connected to a computer.
Make the transmitter as simple as possible and with common parts. This to ensure flexibility to possible mass production.
Something alone the lines of shopkick and sonic notify.
-provide full documentation of both hardware and software.
Please only serious people.
Hello! I've Ph.D. in Electronic Engineering and BSc in Physics. I work with Analog Electronics and PCB design. I can do what you need with quality and reliability!
4 freelancers are bidding on average $1388 for this job
hi, i am an electrical engineer and an embedded system developer. i can help you with this project. i will provide you all design files, schematics and PCB layout. also i will provide you the working prototype.