4-dimensional theremin / hand-tracking interfaceDesigned by Interstitial in United States of America
What is it? Quadrant is a human-computer interface based on an array of distance sensors. The hardware consists of 4 time-of-flight sensors and is specifically designed to detect the position, velo...Read More…
Quadrant is a human-computer interface based on an array of distance sensors. The hardware consists of 4 time-of-flight sensors and is specifically designed to detect the position, velocity, and orientation of the user’s hand in free space. Signal processing techniques are used to recognize gestures and other events, which can be mapped to a variety of musical parameters in software. We have developed Quadrant as an open-hardware circuit board which acts as a USB controller to a host computer.
This project developed from an interest in gestural interfaces for music. We had some promising early results with arrays of photometric distance sensors, but ultimately the low range, rampant cross-talk, and susceptibility to ambient light conditions motivated us to look beyond these basic sensors. Recent advances in time-of-flight technology presented the opportunity to switch to a far more accurate and robust class of sensors. By shrinking the array to just 4 sensors, we were able to keep the BOM affordable while still offering a broad range of interaction paradigms. Finally, to make the interface as widely applicable as possible, we decided.to make it open source hardware with a simple USB serial connection.
It's fast, accurate, multi-channel distance sensing in a minimal, open-hardware package that can be adapted to a variety of use cases.
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Kang | June 4, 2019
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