I am working on a project where I need to wirelessly communicate two arduino boards. One arduino will be used as a beacon to relay info for others. The one relaying information will have to be burried in ground say 6 inches beneath surface level. The distance between two boards cane be around 10 feet. I learned arduino Wireless SD Shield is a way to establish wireless communication but it also says that communication is going to be in line of sight. But in my matter, there is no line of site. The setup has to be one point to many points as the beacon will send information to many points.
How I do that? Can someone give link to some latest tutorial for such setup.
Best Answer
The wireless module isn't included with this shield, and you are free to choose which module you want to use, and can for instance choose a module from xbee that uses the 2.4GHz band. In that case, you can safely bury it 6 inches into the ground and communicate the required 10 feet.
The line of sight mentioned is for maximum distance of (normally) 300 feet. In-doors its typically limited to about a 100 feet due to walls and such reducing the signal strength. (It's the same as for a regular Wi-fi signal).