The Ruiz brothers at Adafruit have used Phillip Burgess’s PixieDust code to turn a 64×64 LED Matrix and a Raspberry Pi Zero into an awesome sand toy that refuses to defy the laws of gravity. Here’s how to make your own. BIG LED Sand Toy – Raspberry Pi RGB LED Matrix Simulated LED Sand Physics! These LEDs interact with motion and looks like they’re affect by gravity

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Simulate sand with Adafruit’s newest project