Scroll wheel encoder

[MaxMihawk]

Hi SunjunKim. Do you have any tips to bring this to work with a scroll wheel encoder?

[SunjunKim]

Check this:
http://www.buxtronix.net/2011/10/rotary-encoders-done-properly.html
or
https://github.com/brianlow/Rotary
https://playground.arduino.cc/Main/RotaryEncoders/