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Latest Project

Everything ESP DIY Avionics Simulator with ESP32 - Artificial Horizon, Compass & Altimeter

June 20, 2026 by Mirko Pavleski

Arduino Project
XiaoZhi AI and DFRobot ESP32-S3 AI Camera

XiaoZhi AI and DFRobot ESP32-S3 AI Camera

June 16, 2026 by CETECH CETECH

Analog Project
DIY Miniature X-Ray Machine using a TV Vacuum Tube DY86

DIY Miniature X-Ray Machine using a TV Vacuum Tube DY86

A simple rectifier tube can produce high-quality X-ray radiographs. It is a cost-effective way to explore the principles of medical imaging and vacuum tube physics in a controlled DIY environment.

June 13, 2026 by Mirko Pavleski

Arduino Tutorial
ESP32 C3 Super Mini WiFi Fix - 3 Methods That Work

ESP32 C3 Super Mini WiFi Fix - 3 Methods That Work

Is your ESP32 C3 Super Mini randomly dropping off WiFi or losing Bluetooth? You're not alone — and here are 3 methods that actually work. fixes I've tested personally.

June 11, 2026 by Ashish Adhikari

Arduino Project
Simple SDR Receiver Using 2x NE612 - Dual Conversion, Superheterodyne (0.1–30 MHz)

Simple SDR Receiver Using 2x NE612 - Dual Conversion, Superheterodyne (0.1–30 MHz)

This project demonstrates a simple yet highly effective SDR (Software Defined Radio) receiver based on a dual-conversion superheterodyne architecture using two NE612 mixer ICs.

June 06, 2026 by Mirko Pavleski

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Adafruit Playground Project
PowerPD — ESP32 USB-C PD/PPS Programmable Power Supply

PowerPD — ESP32 USB-C PD/PPS Programmable Power Supply

June 01, 2026 by Raushan kumar

Arduino Project
Air Quality Monitor with Arduino GIGA R1 and DFRobot PM2.5

Air Quality Monitor with Arduino GIGA R1 and DFRobot PM2.5

Will guide you to build an Air Quality Monitor System with Arduino GIGA R1 with DFRobot PM2.5 sensor.

May 31, 2026 by CETECH CETECH

Arduino Project
DIY Vintage TV  VU Meter with peak indicators

DIY Vintage TV  VU Meter with peak indicators

With this project, you can easily turn your old (or new), useless TV into a beautiful retro video effect device.

May 30, 2026 by Mirko Pavleski

PCB Tutorial
Why High C-Rating Batteries Still Experience Voltage Sag

Why High C-Rating Batteries Still Experience Voltage Sag

A common misconception in the drone and RC world is that a high C-rating automatically guarantees stable voltage under load. In reality, even expensive high C-rating LiPo batteries still experience voltage sag — sometimes surprisingly severe sag during aggressive throttle bursts or high-curre

May 29, 2026 by Rachel Lau

PCB Tutorial
Why High C-Rating Batteries Still Experience Voltage Sag

What Actually Happens Inside a LiPo Battery During Fast Charging?

Inside a LiPo battery, fast charging is far more complicated than simply “pushing more current.” When charging current increases, several electrochemical and thermal processes begin happening simultaneously inside the cell — and some of them can permanently damage the battery if not properly controlled.

May 29, 2026 by Rachel Lau

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