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Dummy – Haptic-Nav

A navigational tool for the visually impaired using tactile feedback.

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Can haptic feedback in a handheld device provide a more intuitive and safer navigational experience for visually impaired individuals in urban environments?

This project investigates non-visual ways of experiencing digital information. Haptic-Nav is a physical prototype that aims to provide an alternative to audio-based GPS directions, which can often be distracting or obscure important environmental sounds for those with visual impairments. The project focuses on creating a more direct and embodied sense of direction through the sense of touch.

Process

The design process was grounded in co-design workshops with members of the local visually impaired community. Their insights were crucial in defining the core interactions. Early prototypes were built using Arduino, simple vibration motors, and off-the-shelf enclosures to test different feedback patterns. Later iterations involved 3D printing custom ergonomic casings and refining the software to provide more nuanced signals. The final prototype was tested in various real-world urban settings.

Artefact

The primary artefact is a functional, handheld device prototype. The 3D-printed enclosure is designed to fit comfortably in the user’s hand. Internally, an Arduino Nano connects to a smartphone’s GPS via Bluetooth. The device translates directional cues (e.g., “turn left in 20 meters,” “you have arrived”) into distinct, pre-tested patterns of vibration, guiding the user without requiring audio or visual prompts.

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