Original Switch Pad: Ichigo Pad

Original Switch Pad for   IchigoJam or other board computers

Switch and LED board  Original Design by team ise
https://www.facebook.com/IchigoTeamIse/

4 button switches
 para mode : 4 pulled up terminals
*Analog mode: Single 16 level analog output by 4 buttons combination

8 LEDs
para mode : 8 direct-in terminals
*Serial mode: Single self synchronized input for 8 LEDs
 
Feature
Simple Interface uses minimum I/O port
*use only one terminal can detect combination of 4 swithes 16 levels in 0 to 3.3V
*use only one terminal can send 8 LEDs individually by pulse width modulation