| Pin | Name | Description |
| 1 | Keypad -- right column | Keypad -- right column |
| 2 | Keypad -- middle column | Keypad -- middle column |
| 3 | Keypad -- left column | Keypad -- left column |
| 4 | Start, Pause, and Reset common | Start, Pause, and Reset common |
| 5 | Keypad -- third row and Reset | Keypad -- third row and Reset |
| 6 | Keypad -- second row and Pause | Keypad -- second row and Pause |
| 7 | Keypad -- top row and Start | Keypad -- top row and Start |
| 8 | Keypad -- bottom row | Keypad -- bottom row |
| 9 | Pot common | Pot common |
| 10 | Horizontal pot (POT0, 2, 4, 6) | Horizontal pot (POT0, 2, 4, 6) |
| 11 | Vertical pot (POT1, 3, 5, 7) | Vertical pot (POT1, 3, 5, 7) |
| 12 | 5 volts DC | 5 volts DC |
| 13 | Bottom side buttons (TRIG0, 1, | Bottom side buttons (TRIG0, 1, 2, 3) |
| 14 | Top side buttons | Top side buttons |
| 15 | 0 volts -- ground | 0 volts -- ground |
