Tested on the following chips/boards:
* RP2040 (Raspberry Pi Pico)
* ATSAMD21 (Adafruit PyBadge)
* NRF52840 (PCA10056 developer board)
* ESP8266 (NodeMCU)
* ATmega328p (Arduino Uno)
* ESP32C3 (WaveShare ESP-C3-32S-Kit)
* FE310 (SiFive HiFive1 rev B)
The sensitivity threshold in the example may need to be adjusted per
board though, the default value of 100 typically recognizes when a cable
is being touched but the RP2040 for example is capable of doing much
more precise measurements if the power supply is sufficiently
noise-free.
Ayke van Laethem