I'm going to design a new toy for my daughter. I'm looking for a cascadeable touch sensor that allows me to put a lot of them using few signal lines - an SPI needs a CS line for each one and I2C needs a different address for each one.
I need to put lot of them, ideally some hundreds. Something like a WS2812, of course allowing me to read the data.
Furthermore I would like to read an "analog" register, to have an indication about how far is the finger, not only a digital 0..1.
Do you know any sensor like this?
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