Tell us about yourself!

Complete Your Profile

Achievements

  • LukeI2 followed The Black Ram and RaedT2 years ago
  • Ultrasonic sonar for the blind and visually impaired

    Thanks for the comment, sztakacs. No field test has been conducted yet, and to dive a little deeper, I think your question eludes to an overarching concern: What exactly is the state of this project? To answer that question, it's pretty early. This device's development level should be considered as in line with a proof-of-concept.With that in mind, in part by posting this article, I'm hoping to solicit feedback that might eventually be used to further develop and mature the project. Already, just in producing an iteration of the hardware, shortcomings of the design have been observed. For example, the arm-piece is a bit top heavy, so it may benefit in a future iteration to have its weight distributed differently. In the meantime, I think the device offers reasonable value even in ...

    see more »

    Thanks for the comment, sztakacs. No field test has been conducted yet, and to dive a little deeper, I think your question eludes to an overarching concern: What exactly is the state of this project? To answer that question, it's pretty early. This device's development level should be considered as in line with a proof-of-concept.With that in mind, in part by posting this article, I'm hoping to solicit feedback that might eventually be used to further develop and mature the project. Already, just in producing an iteration of the hardware, shortcomings of the design have been observed. For example, the arm-piece is a bit top heavy, so it may benefit in a future iteration to have its weight distributed differently. In the meantime, I think the device offers reasonable value even in its current configuration, I'm hopeful that it will help in a practical way.

    Thanks RaedT! My experience with these particular sensors is fairly limited, but testing at the workbench, it seemed to detect hands pretty well -- but you're correct also that some surfaces cause irregularities. Notably, I've observed that the sensor is most reliable when aimed from a high angle / orthogonal to a flat surface, but gets spotty when aimed at a low angle to a flat surface (just to speculate, my guess is that too much of the ultrasonic pulse is being deflected rather than bouncing back for the sensor to pick up). Furthermore, there is a question of resolution, I'm not sure how small of an object profile the sensor is able to detect. These are both points with potentially significant impact to the device's usability.Having stated that observation, this is probably a goo...

    see more »

    Thanks RaedT! My experience with these particular sensors is fairly limited, but testing at the workbench, it seemed to detect hands pretty well -- but you're correct also that some surfaces cause irregularities. Notably, I've observed that the sensor is most reliable when aimed from a high angle / orthogonal to a flat surface, but gets spotty when aimed at a low angle to a flat surface (just to speculate, my guess is that too much of the ultrasonic pulse is being deflected rather than bouncing back for the sensor to pick up). Furthermore, there is a question of resolution, I'm not sure how small of an object profile the sensor is able to detect. These are both points with potentially significant impact to the device's usability.Having stated that observation, this is probably a good opportunity to refine what should be the expectation when using this device: that it is not a catch all, but rather it provides some additional information about the user's environment. I do not expect at this point that it should replace a given user's existing accessibility methods or devices, but rather supplement them.

    View Instructable »
  • Ultrasonic sonar for the blind and visually impaired

    Thanks! Although not intentional, I had played through Fallout 4 before starting the project, it's possible I may have channeled the Pip Boy a bit in its design.

    View Instructable »