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Quick note A 4-panel RGB LED matrix with a custom controller board — small project, real engineering, and the right energy to lead a portfolio with. The build is a 2×2 grid of addressable RGB LED panels driven by a custom controller board and a ribbon cable. The controller handles the panel refresh and the…
Project story Two flexible PCB coils, an ESP32, and no permanent magnet — can it produce recognizable audio? A contest entry led to a prototype that answered the question, one way or another. The question Can you make an audio speaker from two flexible PCB’s and without the use of a permanent magnet? This question…
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