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Using a LED Matrix as a Scanner

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Published on Apr 28, 2019

Use an Arduino, a LED matrix and a phototransistor as an input device.

Ordinary digital cameras work by using a large array of light sensors to capture light as it is reflected from an object. In this experiment, I wanted to see whether I could build a backwards camera: instead of having an array of light sensors, I have just a single sensor; but I can control each of 1,024 individual light sources in a 32 x 32 LED matrix.

For build instructions and code, visit my Instructables page:

https://www.instructables.com/id/Usin...

Music:

Artifact Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
http://creativecommons.org/licenses/b...

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