How do you connect 4x4 Button Pad PCB + 4 Arcade Buttons to an Arduino Uno?

Using Arduino LEDs and Multiplexing
3

Hi Paul,

I am working on a MIDI Controller.

![](http://C:\Users\Denise Cavaco\Desktop)

The 16 button will act as a sequence and will respond only when being pressed.

The other 4 Arcade buttons will also respond only when being pressed and will have various functions (e.g. one for Play, another for Stop etc).

I am using these LEDs: LED Lamps | Cricklewood Electronics

I don't mind whether they fade or not. I haven't found a Sparkfun tutorial, this one: http://www.instructables.com/id/Sugarcube-MIDI-Controller/ but a 74HC595 shift register is being used and I don't.