TAG

PCB

  • HELLO LED matrix

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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…

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  • ESP32 combat robot controller (V2)

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    Hardware revision In 1lb and 3lb combat robotics, every gram counts, so I prefer to build custom control boards to minimize weight. However, designing a new board for each robot became tedious, especially when most share the same fundamental requirements: receiving commands from a handheld controller and driving motors—both for movement and a high-current ESC/BLDC…

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  • Universal ESP32-C3 Combat Robot Controller (V1)

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    Hardware revision · V1 retrospective A universal, weight-conscious ESP32-C3 control board for 1lb and 3lb combat robots — BLE-linked to an Xbox gamepad, with brushed motor H-bridges and high-current outputs for ESCs and weapons. Version 1 was the first attempt; this post documents what worked, what didn’t, and why the next revision took the shape…

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  • Business Card Music Player

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    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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