wireless communication

Hello, everybody. I wish to set up some sort of surveillance for a certain plot of land in almost direct line of site (some houses and trees are in the way) over a distance of less than a kilometer. In a first stage some sensors should be detecting the opening of some doors and in a second...

My current setup involves sending-receiving few variable values, implemented using a struct variable, wirelessly between two ESP32s which are both physically present in the same room, using ESPNow. Each data is sent/rx at an interval of 15ms. This setup is working flawlessly for me. I'm also...