help with pin 16

Hi,

I just started tinkering with Arduino by buying a kit from eBay which came with a set of lessons.

Somehow I got stuck on lesson #10 (link below)

http://wiki.epalsite.com/index.php?title=Starter_Kit_for_Arduino#Lesson_10_PS2_Joystick

The two LEDs work fine but the problem I am having is the mysterious digitalRead(16). It is referenced in the code (for the active buzzer) but not in connectivity schematics. I did some research and am not sure if pin #16 exists at all.

Can someone please help me understand how the buzzer is controlled and how all of this supposed to work?

Thanks a lot!

16 is the same as A2

A0 is D14
A1 is D15
A2 is D16
Etc.

Thanks a lot! This helped me figure it out :slight_smile: