This library turns the Love Pin (the little heart shaped blob of solder on the back of the Arduino UNO-R4 Minima or Arduino UNO-R4 WiFi) into a capacitive touch sensor.
It requires the addition of a small capacitor be connected between pin 10 and ground on the Arduino UNO-R4 Minima or between pin 7 and ground on the Arduino UNO-R4 WiFi The size isn't very important but it will affect the threshold I used 10uF but even as small as 1nF should still work.
First call love.begin() in setup()
Call love.read() to read the sensor.
This function returns a boolean value touched or not
Use Serial.print(love.debug()); to print the raw numbers from the touch sensor
If the sensor doesn't work, then use the debug method to see what numbers you are
getting in the diff reading when touching or not touching.
The default threshold is set to 23000, but if you find that your numbers are different
then you can call love.setThreshold(NNN) where NNN is the threshold you want to use.
v1.0 - Initial Release
v1.1 - Bug Fixes
v1.2 - Adds support for Arduino UNO-R4 WiFi. (added by Winnie S. PR#1)