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How to Build an Acoustic Drone Detector with ESP32 for a Few Thousand Rubles
Batear project uses a microphone and ESP32 microcontroller to detect drones by their acoustic signatures, processing everything locally without cloud dependency.
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A Full-Featured Microcomputer Just One Millimeter Thick
A developer created muxcard, a working microcomputer based on ESP32-C3 with E-Paper display and NFC that fits into just 1 mm thickness—smaller than a credit card.
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How to Turn a $5 Microcontroller into a Bluetooth Speaker or Wireless Player
Turn a $5 ESP32 microcontroller into a Bluetooth speaker or wireless audio player using the ESP32-A2DP library—a clean C++ interface for streaming audio over A2DP.
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Pocket Media Server on ESP32-S3 for Travel and Offline Networks
A developer built a fully autonomous media server on an ESP32-S3 microcontroller that fits in a USB flash drive form factor. It creates its own Wi-Fi network and streams movies, music, books, and even offline Wikipedia.
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DIY Solar Concentrator — When a Hobby Project Outperforms Industrial Counterparts
French engineer built a DIY solar concentrator from bathroom mirrors that heats to 210°C using just 3.8W of power, delivering 1kW thermal output.