Hello everyone, I hope for your help, I would like to build a transmitter and a receiver that works underwater, in practice I need to have a display and two buttons on one side, and the signal receiver on the other side, that is, if I press button 1 on the other side, LED 1 will light up and this will be displayed on the display, if instead I press button 2, LED 2 will light up and be displayed on the display, can you tell me how to do something like this, what system to use so that it can work underwater by keeping the two systems at a distance of 1 meter, thanks for your help
Transmitter and receiver with display
- Thread starter lidas123
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