To summarize, I want to use 20 devices in such a manner that 16 would be collecting data in group of 4 and 4 separately would be sending data to ThingsBoard.
I want to achieve this as I am thinking to expand it to my whole society and it would need around 200 units. So, If I get hang of how to use 20, I would be able to expand it maybe.
Please help as I am stuck onto it from so many days.
My all devices are also running in deep sleep mode with 20 mins wake up interval.