Pixelblaze V3: Wi-Fi enabled, real-time coding LED controller with web-based development environment

Pixelblaze makes writing new LED patterns fast and fun using its real-time web-based editor and highly optimized expression engine. You can store a hundred patterns and write new ones by entering mathematical expressions or code that update in real time as you type. Pixelblaze is designed to make it easier to program LED patterns and intuitively understand how code and math affect those patterns.

Schematic PCB

PowerEver: the tiny device that turns your universal power bank into an uninterruptible power supply

PowerEver is a tiny electronic board that keeps your commercial power bank running uninterrupted while minimizing self-leakage current. It is user-adjustable and compatible with almost all power banks on the market. This means your power bank will never be short of power bank for your electronics.

Schematic PCB

Micro WS2812 2020 RGB LED Matrix

The Micro WS2812 2020 RGB LED Matrix is ​​a micro 25x25 mm 8x8 WS2812-2020 matrix. It's only about 1 square inch, or about a quarter the size of the United States. This micromatrix is ​​daisy chainable, meaning you can stack boards side by side while using only one data pin. Best of all, this matrix is ​​compatible with all other WS2812 related matrix codes and is open source. Despite its small stature, this matrix has everything you need, with pad connections for VCC, ground, data in, and data out. It works with 3.3 V or 5 V and is capable of outputting 16 mA per LED.

Schematic PCB

Aeroh One: Crackable IR remote control based on esp32-c3 (schematic diagram and source code, etc.)

Aeroh One is a hackable infrared remote control pad that turns any remote control device into a connected device. It will support Alexa, Google Assistant, Apple Siri, iOS/Android App and IFTTT integration. The Aeroh One is compatible with most remote controls that operate via infrared.

Schematic PCB

Wireless security camera based on ESP32

Have you ever wanted to install a security camera in your home, garden or office? Although commercial Wi-Fi security cameras on the market are not expensive, if you want to install multiple ones in different scenes or rooms, it will cost a lot of money. Young engineer Max can develop a wireless security camera based on Espressif's ESP32 chip with only $15.

Schematic PCB

Magically modify your computer power supply to make a beautiful desktop power supply, simple and practical

You can certainly buy desktop power supplies, but they're not cheap. As the current capacity and output voltage quantity increase, so does the price. While a commercial desktop power supply is certainly worth the investment, you may want to consider a cheaper solution. Adapt an old computer power supply for use on your workbench. Computer power supplies have all the voltages you need and some very impressive current capabilities.

Schematic PCB

syzygy-pmod: SYZYGY to PMOD adapter

SYZYGY is an FPGA extension standard for medium to high speed interfaces. This design is a splitter for 4x PMOD connectors. All 32 I/O signals from the SYZYGY connector are brought out. 8 on each PMOD.

Schematic PCB

Teacher ChaN’s latest power strip

The style of enameled wire is as usual, and the craftsmanship is still excellent. The power board designed this time is made of double panels, and a copper-laying design is applied. The insulation layer is laid first and then the copper. If the device on the front needs to be grounded, break the insulation layer and solder it to the copper.

Schematic PCB

meiji-led-ring: Meiji LED ring illuminator mounted on the front of the microscope

The meiji-led-ring is a compact light source that can be mounted on the front of a Meiji microscope. The illuminator uses 24 LEDs along with some high frequency boost drivers to avoid flickering when shooting. The device is powered by the USB-C port. A small ATSAML10 microcontroller is used to control the brightness of the LED driver. The user controls a series of touch sensors from the edge of the PCB.

Schematic PCB

led-panel: LED panel breakout board for white LEDs

The led-panel originated from the author's desire to use a donated roll of white LEDs to break out 48 LEDs on a compact board. Its output power should reach about 4W. It has no controller and is purely for testing a set of LEDs to see if they would be suitable for some form of lighting attached to a gooseneck.

Schematic PCB

Open source power supply EEZ BB3: voltage support 0-80V, current 0-10A

Inspired by the EEZ H24005 programmable power supply project, which has attracted many enthusiasts with its feature set, rich user interface, DIY friendliness and completely open source hardware and software design.

Schematic PCB

Headphone charging compartment schematic design

The schematic diagram of the charging box, the basic functions are as follows: 1. Charge the battery inside the charging box 2. The charging box charges the earphones 3. The charging box communicates with the earphones

Schematic PCB

Zhihuijun open source super mini smart NFC card (schematic diagram, PCB, source code, etc.)

With electronic ink screen, can simulate various IC cards

Schematic PCB

Bluetooth smart lock solution based on MM32W wireless MCU series

Introducing a Bluetooth application solution with very rich usage scenarios - a Bluetooth smart lock solution developed based on the MM32W series.

Home smart lighting control and indoor environment monitoring system 

The project implementation uses RSL10 and external mechanical control structure to complete wireless control of traditional switches.

Schematic PCB

Electronic door guarding (knock detection, reminder)

The acceleration sensing unit (RSL10+KX023) attached to the back of the door is used to detect vibration and movement to detect events such as opening the door and knocking on the door. It also interacts with the terminal through information through BLE and can view the log on the handheld terminal. Handheld terminals are also implemented with RSL10. After powering on, it automatically scans the target device and connects to it. After connecting, it obtains the time and date information of the device (which can be modified at this time), and then enters the log interface. The wireless sensing unit and the BLE terminal exchange information through the BLE connection.

Schematic PCB

Graduation project based on 51 microcontroller electronic code lock design (schematic diagram, source program, thesis, etc.)

The system consists of STC89C52 microcontroller, 4*4 matrix keyboard, buzzer, reset circuit and crystal oscillator circuit, relay, etc. The 4*4 keyboard is mainly used for password input and modification, buzzer alarm, reset circuit and crystal oscillator circuit with STC89C52 The single-chip microcomputer constitutes the smallest system of single-chip microcomputer. It has functions such as setting and modifying 6-digit user passwords, alarming for incorrect input, and alarming for incorrect passwords. This system is low in cost and practical in function.

Schematic PCB

Smart curtain simulation design based on stm32 (source program, Proteus simulation)

Smart curtain simulation design based on stm32, including source program and Proteus simulation files

Schematic PCB

Smart sensor light based on Gizwits (source program, schematic diagram, PCB)

Realized functions: Use the mobile phone APP to adjust the light intensity according to the amount of people walking around and remotely control the lights.

Schematic PCB

Intelligent classroom design based on 51 microcontroller (source program, schematic diagram, PCB, simulation, BOM, paper, etc.)

Use 51 microcontroller STC89C52, clock chip DS1302, liquid crystal screen LCD1602, photoresistor, and infrared tube to design a classroom intelligent lighting control system

Schematic PCB