[sdiy] touch-sensitive switches - how?

[dh at atoav.com]

E.g. a ESP32 supports up to 10 capacitive touch pads:
<https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-reference/peripherals/touch_pad.html>

There are also dedicated capacitive touch ICs with I2C, which would also
be a route you could go for.

Cheers,
atoav