Hi everyone I'm new to the arduino world and might try to do my first project. To do so I'm looking for a way to communicate wireless over a distance of a few mm. Initially I thought, this could be done with the help of a special sensor (capacitive / inductive), that's why I'm posting in the "senso…

"Sensor" for communication within millimeter

CrossRoads February 5, 2021, 7:59pm 4

So you are after some 2-way RF means of transmission then.
Many options exist there

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