Magnetic Visual Quantum Chip Emulator: is a groundbreaking artistic and experimental PCB that merges advanced electronics with the aesthetic language of quantum mechanics. Designed as a "Magnetic Visual Quantum Chip Emulator," this board is a functional piece of tech-art specifically crafted for magnetotherapy research and experimentation. Artistic visual experimental /PCB ART

A simple but very useful Zener diode tester

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

A simple and relatively inexpensive way to make an efficient DRSSTC (Dual Resonance Solid State) Tesla coil.

For driving Cockroft Walton Multiplier I use stable high voltage source which I made with minimal modification of the old PC power supply. With this setup I achieved a constant spark from more than 30cm and a periodical sparks at a distance of more than 35cm.

Differential voltage source at home.

Another electronic project.

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

A familiar circuit, but still useful.

24VDC to 12VDC/500mA dual PSU.

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.

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

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.

BenchVolt PD is an open-source, USB Power Delivery-based bench power supply capable of delivering up to 100 W through multiple DC-DC converters and LDO channels. It provides adjustable and programmable outputs(waveform capable), current monitoring, and real-time voltage/current display — all powered directly from a USB-C PD adapter.

Build this super simple, portable, USB-C powered 0-30vdc power supply!

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