I would be thankful for some input on this, and advice on where to read up on it.
This is for an art installation.
I have two thin metal sheets around 0.5x1.5 meters. They have been part of a large satellite dish. I think it is aluminium. Have to check though.
I would like use them to detect if a human body is nearby, around 1 or 2 meters. They will be hanging flat horizontally in the ceiling of a room. Optimally I want to be able to detect as soon as someone is entering the room.
I know I could use a PIR for this but I want to use the actual objects, the metal sheets.
I have read up a bit on capacitive sensors but the tutorials are mostly for touch screens and the such. I have tried out the CapSense library also, with just a basic circuit.
Although I do not know the technical solution I imagine that it could be really simple. The plates have been used as antennas (a satellite dish), so it should be possible to use them like that again. Right?
Thanks a lot for your help,