Communication between 2 Arduino's one at 6th floor and the other at the basement.
I tried with nodemcu , but the signal is not reaching the basement. From 6th floor.
Which is the best way to connect?.
I have a couple of nRF24L01 with antennas, does nRF24L01 works in this case?
How about hc-12. I have seen tests with line of sight's only. But in this case, I have an elevation of about 80 feet and also some horizontal distance.
Basically, I wanted to implement wireless water level measurement for our overhead tank inside our apartment.