Hello,
My name is Andrei, i am a Romanian IOT Developer with a lot of experience in IOT projects and automatics .
I have read your requirements , i know very well the solution , i propose you a micro controller based solution with serial .
I can work with all types of Microcontroles programming in C , C++ , Mikro C , CCS C , Atmel Studio , Arduino , gcc .
Creating Schematics and PCB in Kicad , Eagle , EasyEDA and Proteus (+simulation).
i have an workshop full of parts and the infrastructure to build PCB and test the solution end to end using special tools (Spectrum analyzers , oscilloscope , logic analyzers )
Derivable on the project :
Wiring diagram for prof of concept .
Schematic design
PCB Design
Gerber files for manufacturing
MCU code explained every line .
C# software for the computer
Regards,
Andrei