With a low-cost ESP32 and WM8960, we built a complete real-time stereo parametric EQ with professional-style controls

This experiment clearly shows how much the enclosure can influence the sound of even a tiny and inexpensive full-range driver.

This is a simple multifunctional device that, thanks to the high precision of the generated frequencies (with two decimal places), can successfully emulate almost all known therapeutic devices for frequency treatment.

The CrowPanel 3.5" ESP32 proves to be an incredibly versatile platform for high-speed audio visualization. By combining custom FFT logic with the optimized TFT_eSPI library, I’ve created a audio analyzer with impressive visual effect.

A unique combination of astronomy, embedded programming and ambient lighting that transforms an ESP32-powered display into a realistic real-time Moon simulator.

These amplifiers prove that a well-designed and carefully built analog circuit can survive decades of hard use and still perform reliably.

Wi-Fi HaLow successfully bridges the gap between traditional Wi-Fi and LoRaWAN by combining long range, low power consumption, and enough bandwidth for real-time video streaming. It is a promising technology for the next generation of IoT and smart surveillance systems.

This project demonstrates that practical object recognition does not always require complex machine learning frameworks. Using only the built-in camera, display, and processing power of the UNIHIKER K10, it is possible to create a simple, fast, and effective object recognition system that can be trained directly by the user.

In this project, I convert a classic PCL86 single-ended tube amplifier design to operate with the less common PCL82 vacuum tube. Powered entirely from compact DC-DC converters, this amplifier delivers maximum 2W of warm tube sound with absolutely no audible hum or switching noise.

In this project I demonstrate an extremely simple Direct Conversion SDR Receiver based on the Microchip MCP2036 IC.

This Elecrow Starter Kit saves time, eliminates wiring problems, and makes learning electronics both simple and enjoyable.