I am using multiple ATMEGA328Ps (4 ATMEGA328P) (OR Arduino Unos). The distance between two farthest ATMEGAs is 14 meters (One is Master Device and Other is Node), and other 3 are connected to each other at a distance of 3 meters from the Master Device. I have a case where i cannot use Wireless communication hence i will have to go Wired. I am also looking to achieve the Mesh topology if possible.
There are many examples on the internet regarding this case but still i am not be able to choose/compare which would be more reliable.
Please suggest me the best solution to work on this. Thanks.