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System specifications
| Components | Specifications |
|---|---|
| Electrotactile feedback | Output current: Adjustable up to 115 mA max (using 500 Ω test load) Pulse width: 80–250 µs (12 settings) Frequency: 250 Hz |
| Audio feedback | 200 Hz audio tone |
| Control unit | Weight: 512 g Wireless range: 25 m |
| Power requirement | Uses two regular 9 V batteries Average current consumption: Arduino + XBee + audio feedback: 180 mA@9 V Electrotactile feedback: 119 mA@9 V |
