Hello.
I am a senior Microcontroller developer and Electronic Engineer.
I read your description and I am interested in your project.
I have developed the firmware and designed the circuit and PCB.
So I can develop the smart device and IoT devices
My skill is firmware for Microchip Atmega ,STM32 , ARM ,DSP , Arduino , embedded system , and Electronics , design the circuit and PCB.
I have rich experience in this field and so I can develop your project perfectly.
I hope to discuss more details via a private chatting.
I will look forward to your reply.
Best regards.