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Project Journal sensor-matrix-tile from electrical/

tile specs (out-dated)

February 19, 2026

Dimensions

3x3 grid of reactive tiles Each tile is 1’ by 1’. Each tile is made up of a 19 strips of 19 WS2812 LEDs. (19x19 LED Matrix) Each tile also has an 8x8 grid of IR Emitter + photodiode pairs

Sensors

Infrared Emitter + Photodiode pairs Spectral Range | 800 nm ~ 1100 nm Response Time | 5 ns Dark Current | 1 nA

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Project Context

led matrices that are responsive to a photodiode matrix overlayed on top of them. started as a project for IEEE-UH, now it's a little exercise. I plan for the system to be able to scale up and have connectivity across multiple tiles.

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