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T.O.F. Wristband V2

An assistive device for visually imparied people, it measures the distance between the user's wrist to obstacles and vibrates proportionally

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The new version of an open source assistive device for visually imparied people,
It measures the distance between the user's wrist and an obstacle and vibrates with intensity proportional to the distance.
It is battery powered (there is a small Lipo inside, that you can recharge with a microUSB cable), quite compact, and both the body and the bracelet can be 3D Printed.
It can be useful for situations where a white cane is less practical (crowded places, places like inside a tram or metro, ecc).

This is a wristband that can help for visually imparied people,.

The idea is that you have it on your wrist, and it vibrates when it is pointed to anyobject closer than 4 meters. And it will signal that by vibtrating (thanks to its internal vibrating disc), with a frequency proportional to the distance.

This project is not mean to replace white canes. They still offer many advantages (no need of batteries, can give not only distance feedback, but also shape of obstacles / holes, just to name a few).

Instead, the focus of this project is to offer a good starting point for a device that can be useful for situations where a white cane is less practical (crowded places, places like inside a tram or metro, ecc).

The design is simple, based on existing modules that are easily available and affordable.

The design is completely Open Source, modifications are welcome, both the body and the bracelet can be 3D Printed, and 3d files  / firmware is free to download, modify, and experiment with.

My_Project_ST53L0A1_test_central_sensor.ino

Firmware

ino - 3.80 kB - 08/05/2021 at 10:46

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PernoChiusura.STL

This part is needed to close the wristband.

Standard Tesselated Geometry - 211.02 kB - 08/05/2021 at 10:45

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Cinturino_3a.STL

New wristband

Standard Tesselated Geometry - 721.08 kB - 08/05/2021 at 10:45

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body1z.STL

New body (updated)

Standard Tesselated Geometry - 591.29 kB - 08/05/2021 at 10:45

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TOF system test 1.SLDASM

Solidworks assembly of the 3d printed parts.

sldasm - 1.08 MB - 08/05/2021 at 10:43

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View all 11 files

  • 1 × 380mAh Lipo
  • 1 × VIbration Disc dia. 8-10mm
  • 1 × Feather 32u4 basic
  • 1 × VL53L1X Time-of-Flight Distance Sensor Carrier with Voltage Regulator, 400cm Max Pololu item #: 3415

  • Working principle

    Madaeon08/09/2021 at 12:26 0 comments

    If you set your Audio volume high you canhear the wristband vibrating, the more close the object is, the faster it vibrates. It detects object up to 4 meters.

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