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.

An Arduino UNO with IMU Barometric Sensor And 3.3V I2C Connector header on board, to achieve physical space and mechanical constraints, and never miss a calibration again!!!!!!!!!

Arduino UNO Board, with IMU and Barometric sensor, to save project space, and achieve mechanical ease!!!!

Learn how to use an L293D Motor Driver Shield with Arduino UNO to control an SG90 servo motor. This practical guide explains the shield’s hardware, pin usage, power connections, servo wiring, button control, and potentiometer-based speed adjustment, while also introducing how the same shield can be extended to DC and stepper motor projects.

An Arduino Uno Compatible Board, But With An Integrated IMU On-Board, To Save Space And Avoid MIscallibration In Real space-constrained project, and achieve mechanical ease.

I turned the Elecrow 2.8-inch ESP32 touchscreen into a small USB PC Control Deck for my desk. It displays live CPU, RAM, GPU, VRAM, network and disk usage, while the touchscreen provides quick access to tools and local services. I can open ChatGPT, start Ollama, launch my local voice server, open Task Manager or lock the PC with a single tap. Everything works through one USB cable. No Wi-Fi or Bluetooth is required, and no passwords or API keys are stored on the ESP32. The firmware is built with PlatformIO, while a small Python bridge running on the PC sends telemetry to the ESP32 and receives touch-button commands. GitHub: https://github.com/lepczynski-cloud/ESP32-PC-Control-Deck Video: https://www.youtube.com/watch?v=16eqHU4j9Fk

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.

ESP32-S3 based MP3 player that combines retro aesthetics with modern, production-grade hardware architecture.

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

This project is a compact stereo Hi-Fi R2R NOS DAC based on two classic Burr-Brown PCM58 18-bit converters, with one DAC chip dedicated to each audio channel.

Build a Raspberry Pi spy camera with the camera module 3 NoIR

Learn How to overclock your raspberry Pi 5 with this guide

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

This is a 24VDC to 12VDC / 500mA dual power supply project.