Buying a ready-made power supply would be too easy, so I decided to make my own.

PicoPD allows access to all USB PD 3.0 profile include PPS so that you can get the most current at any voltage out of your new USB-C charger

AMAZING DIY DESKTOP CHARGING STATION.IT IS MINI IN SIZE,BUT IYT HAS POWER LIKE MONSTER.

The Open Source Fusion USB 3.0 Charge Pro is an all-in-one keychain tool for secure and efficient USB charging. It features a USB Power Meter to monitor charging, a Cable Tester to check cable integrity, a USB Condom for data protection when charging in public, and a Power Splitter to charge multiple devices from one port—all in a compact design.

Power your outdoor electronics with this compact and smart 18650 solar charging PCB! Designed for low-power IoT projects like ESP-based sensors or automation nodes, this board combines a TP4056 charging module (with integrated undervoltage protection), a TPS61023 5 V boost converter, and two optional switches for flexible power management. The board runs from up to five 5V solar panels and supports one or two 18650 Li-Ion cells. Ideal for garden sensors, smart weather stations, and other mobile DIY projects. For full assembly instructions and detailed specs, visit: https://smarthomeyourself.de/18650-solar-platine This is a non-commercial community-driven design. Feel free to build and share it! ????️ Components & links below

This universal power supply board is a perfect match for powering the low power devices such as MCUs, Sensors & Modules with the best load and line regulation features. The board can take an AC or DC input of as low as 8V and as high as 28V to provide a multiple DC output voltages like 3.3V, 5V, 12V, variable DC output, and the output same as the input. The maximum load regulation is measured to be 60mV and the maximum line regulation is measured to be 0.2%/V.

A compact, DIY laboratory power supply platform powered by ESP32, featuring closed-loop motor control for precise voltage and current adjustment, real-time measurement, and an intuitive graphical display. Users can select from predefined voltage and current presets or save custom settings for repeated use. Designed for hobbyists and makers, it enables hands-on exploration of analog and digital circuits with high precision and flexibility, combining practical functionality with an educational and experimental approach.

A compact and powerful USB power supply based on the XL4015 buck converter IC. Designed to deliver stable 5V up to 5A — perfect for powering Raspberry Pi, ESP32, Arduino, and USB gadgets.

40 Vac to 5 volt @ 600mA DC supply has resetable fuse and TVS to protect uCPU.

I made a small DC-DC power supply for prototyping, projects, assembly and electronic experiments.

This project demonstrates the design and implementation of a Multi-Voltage Regulator PCB that provides 4 output voltages: 12V, 9V, 5V, and 3.3V. The circuit uses four voltage regulators: