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Audio visualization on LEDs: perceptual models and mathematics

https://sudonull.com/audio-visualization-on-leds-perceptual-models-and-mathematics

How mel scale and convolutions solve the pixel poverty problem in audio visualization. Technical details of implementation for embedded systems. Learn the key algorithms.

Reaction game on ATmega32 for two players

https://sudonull.com/reaction-game-on-atmega32-for-two-players

Create a DIY gadget on ATmega32: three LEDs per player, count to 3, animation. Schematic, soldering, firmware for embedded developers. Assemble your prototype in an evening.

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