I need to have one master arduino uno, and many slave arduino uno's, in which if I send some specific number from master arduino uno through serial monitor, every slave should receive it, and whichever slave is programmed to receive the specific number should send out data, and other arduiino slaves should do nothing at that instant, and master arduino uno should receive information and display it in serial monitor, I am planning to connect everything using serial monitor.
This is for: I have about 12 temperature meter in different part of my barracks using lm35 temperature sensor and arduino uno displaying the temperature, Now I need to have a single console in the ground floor which receives temperature data from slave temperature meter and display it in serial monitor, because I cant go everytime to check the temperature, Now I have planned to use above method, will it be feasible for this, wiring connections are done already for master and slaves. Now I need to know how to establish the wiring and code? Can you please help me in this? I am willing to have different ideas other than this also