Maker Pro | Electronics Projects and Tutorials

Latest Project

Adafruit Playground 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

May 31, 2026 by CETECH CETECH

Arduino Project

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

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

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