Open source 60W small UPS power supply reference design

Ideal for running network devices such as small switches, home routers, and WLAN access points.

Schematic PCB

WS2813 WLED fixed buffer

2-layer PCB 9 x 11.4 mm FR-4, 1 mm, 1, HASL with leads, blue solder mask, white silkscreen; very small buffer for WS2813 LED strip.

Schematic PCB

Multifunctional buffer for WS2813 LED strip

2 Layers PCB 10 x 16.5 mm FR-4, 1 mm, 1, HASL with lead, White Solder Mask, Black silkscreen; WS2813 buffer and repeater for long range serial transmission

Schematic PCB

Sunmachine-A2 - Intelligent Lighting System

Driver for WS2812, SK6812 or similar LED strips controlled via Bluetooth LE. It supports RGB and WWA LEDs. The drive uses motion and light sensors so in automatic mode it can turn on the lights when it detects the presence of someone in the dark.

Schematic PCB

LEDThermometer: LED Indoor Wall Thermometer with Power Adapter

LED Indoor Wall Thermometer with Power Adapter

Schematic PCB

LEDBOY: A game console without an LCD screen based on Attiny 1614

This project started with a conversation with a friend and apparently how the LED based consoles that existed in the 70's have never been revisited

Schematic PCB

10x10x10 LED cube

The project is a cube shaped 10x10x10 LED matrix controlled by a serial interface.

Schematic PCB

0-30V, 0-7A adjustable switching power supply

2 Layers PCB 42.2 x 68.8 mm FR-4, 1.6 mm, 1, HASL with lead, Green Solder Mask, White silkscreen;

Schematic PCB

0-30V 0-3A DC regulated power supply circuit

0-30V 0-3A DC regulated power supply circuit

Schematic PCB

0603 LED light strip 7 LEDs

2-layer PCB 8.89 x 19.05 mm FR-4, 0.8 mm, 1, soldered with leads, white solder mask, black silkscreen

Schematic PCB

Teacher ChaN’s AC load analyzer

Supports voltage, current, effective power, apparent power, power factor, frequency, and harmonic component display.

Schematic PCB

Adjustable 300v high voltage USB PD power supply, based on Raspberry Pi RP2040

Schematic PCB

Open source plankton monitoring and analysis equipment PlanktoScope

Plankton help remediate 30-50% of the world's carbon dioxide and provide the foundation for the global food chain, making up the world's largest daily movement of biomass as it travels across the ocean. The shapes, colors, and movements of these billions of creatures are as vast as the oceans that sustain them. Understanding plankton is crucial to understanding the world around us and our impact on it.

One obstacle to this type of research is the sheer size of the area to be explored, as well as limited resources for research fleets and specialized equipment. By developing a method to scale up high-quality visual exploration and documentation, we can greatly increase our understanding of the complex web of life around us, and how we in turn influence it.

Schematic PCB

Use waste water bottles to produce 3D printer filament recycling machine

3D printer filament can be produced from discarded water bottles, which will serve two key purposes: recycling plastic waste and producing 3D printer filament at extremely low cost.

The authors hope that as many people as possible will replicate and improve on this project. Therefore, all CAD, firmware and other resources are open source. Special consideration was also given to ensuring that all parts and tools used in the build process were easily sourced.

Schematic PCB

3D printed portable wind turbine

The wind turbine is mainly 3D printed and equipped with a BLDC motor as a generator. Foldable and no larger than 2L soda bottle. Easy to replicate and low cost to manufacture.

Schematic PCB

Low-cost 2.5KV USB power isolation solution (schematic + BOM + gerber, etc.)

This is a low-cost isolation achieved through a power transformer. Since the transformer is more convenient for AC isolation, but DC is not suitable, ATtiny412 is specially used for control.

Schematic PCB

1200W switching power supply design schematic diagram and PCB design information

Schematic PCB

Maker LED Display: Arduino programmable and internet-connected LED matrix display

Maker LED displays make using LED matrix displays easy. The ready-to-use, fully assembled circuit board has everything you need to run your monitor - just plug it in! Using and customizing the display is easy, with a specially written Arduino library and a dozen pre-made examples. The Maker LED display also has Wi-Fi so it can connect to the Internet to retrieve and display information. Choose between 32 x 9 pixel or 64 x 9 pixel versions and select LED color: white, blue, red, green, orange or violet.

Schematic PCB

Split Single-phase Energy Meter: Affordable remote energy monitoring for your entire home

The CircuitSetup Split Single Phase Energy Meter is an affordable, accurate remote energy monitoring device for your entire home. It monitors energy usage in real time, independent of power company meters, and can be easily connected to any wireless microcontroller (such as ESP8266 or ESP32) to transmit energy data to programs such as EmonCMS. It can also be used to monitor solar systems to track the amount of electricity you generate from the sun. It uses a secure current transformer clamp to sample current - no AC wiring required.

Schematic PCB

makerPower Solar: Smart solar power generation system for the Internet of Things

makerPower Solar is a smart solar battery charger and 5 V power supply combination. It allows technology professionals and enthusiasts to take their embedded systems and IoT devices off the grid and run them anywhere. It can operate as a simple stand-alone power supply or as a peripheral capable of comprehensive reporting of power conditions. True Maximum Power Point (MPPT) algorithms extract every joule of energy from all solar conditions.

Schematic PCB