Interfacing a Joystick

Hi,

there is a error on the 'How this works' explanation.
DAC (Digital to Analog Converter - that is messuring the values from the potentiometers in the joystick)
That's not a DAC but a ADC Analog to Digital converter. You read the voltage of de potentiometer with a resolution of 8bit.

there is a error on the 'How this works' explanation.

Link, please.

(A successive approximation ADC consists of a DAC and comparator. The one in the Arduino's AVR is a ten bit device)