| Obstacle | Distance (cm) | Vp-p (mV) w/o obstacle | Vp-p (mV) with obstacle |
| Knife | 1.1 | 102.4 | 93 |
| 2.9 | 98 | 79.2 | |
| 4.4 | 96.8 | 76 | |
| Metal Bar | 2 | 104.8 | 88.8 |
| 3 | 98 | 81.6 | |
| 4.4 | 96.4 | 86.4 | |
| Screw | 2 | 28 | 25 |
| 3 | 23.4 | 20 | |
| 4 | 20.2 | 18.4 | |
| 5.2 | 18 | 17.9 | |
| Lead solenoid | 2 | 28 | 24.5 |
| 3 | 23.4 | 20.8 | |
| 4 | 20.2 | 18.8 | |
| 5.2 | 18 | 17.4 | |
| Nut | 2 | 28 | 23.8 |
| 3 | 23.4 | 21 | |
| 4 | 20.2 | 19.2 |