Hello,
My name is Andrei, i am a Romanian IOT Developer with a lot of experience in IOT projects and automatics .
I have done the GPRS ota upload on an arduino with GPRS , is not a simple task but is doable, the idea is you to know the ip of the equipment , do you have it on a MQTT server ?
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 .
MCU code explained every line .
Regards,
Andrei