Hello! I really need everyones help. I am PLANNING to build an Arduino Submarine, along with an Arduino Remote for it. My problem is that I need to have the remote and the sub communicate. The remote will send commands to the sub, and the sub will send feedback. The sub will be underwater, and the remote above water. The sub will move throughout my pond. So, i need some form of wireless communication, that works underwater (The signal sender doesn't have to be WET in the water, as the INSIDE of the sub will be dry. The signal sender could be housed inside the sub if necessary) and the signal sender has to work at an OK range throughout my pond.
Also, it would be preferable if the sender could just accept Serial text commands and send serial data, and the receiver could input the Serial Data as Serial text back into the Arduino. Simple Serial communication. (Just wireless)
Any ideas? I would love your help! :)