Pin Assignments for Ping-Pong Ball Sensor Interface
| PIN # | TARGET | PIN # | TARGET |
| 1 | Photonic Detector +5V Bus | 21 | Open |
| 2 | Open | 22 | Rear LED (#16) |
| 3 | Open | 23 | #15 LED |
| 4 | Front Photonic Detector (#1) | 24 | #14 LED |
| 5 | #2 Photonic Detector | 25 | #13 LED |
| 6 | #3 Photonic Detector | 26 | #12 LED |
| 7 | #4 Photonic Detector | 27 | #11 LED |
| 8 | #5 Photonic Detector | 28 | #10 LED |
| 9 | #6 Photonic Detector | 29 | #9 LED |
| 10 | #7 Photonic Detector | 30 | #8 LED |
| 11 | #8 Photonic Detector | 31 | #7 LED |
| 12 | #9 Photonic Detector | 32 | #6 LED |
| 13 | #10 Photonic Detector | 33 | #5 LED |
| 14 | #11 Photonic Detector | 34 | #4 LED |
| 15 | #12 Photonic Detector | 35 | #3 LED |
| 16 | #13 Photonic Detector | 36 | #2 LED |
| 17 | #14 Photonic Detector | 37 | #1 LED (Front) |
| 18 | #15 Photonic Detector | ||
| 19 | Rear Photonic Detector (#16) | ||
| 20 | LED +5V Bus |