Doubly-fed wind power generation system based on direct power control and its low voltage ride-through source code

A stator-side direct power control algorithm based on multi-frequency proportional integral resonant controller

Schematic PCB

OpenGlass: AI glasses based on ESP32S3, costing more than 100 yuan to copy

​You can record your life anytime and anywhere, remember people's names, calculate food calories, translate in real time, and have intelligent conversations...

Schematic PCB

Thunderbolt USB4 open source oscilloscope: 4 channels, bandwidth 350MHz, sampling rate 1Gsps, host computer supports Windows and Linux

Not only is it open source, the author also has a super-detailed record of the design process. The bandwidth of each analog channel is not reduced in order to reduce costs. Each channel has a bandwidth of 350MHz, and higher sampling rate support can be designed in the future. Thunderbolt USB4 interface, speed up to 1GB/s (8Gbps)

Schematic PCB

Protues simulation example (8051)-PWM test

Protues simulation example (8051)-PWM test

Schematic PCB

[Hengtuo Technology] Hawk 2 open source flight control data package V1.0

HT-Hawk is an open source flight control system suitable for multi-rotor aircraft. It supports four- and six-rotor aircraft. It is an open source autopilot system developed for multi-rotor aircraft enthusiasts. It can achieve attitude stabilization and provide users with excellent performance. Flight experience.

Schematic PCB

Based on STM32G431, a compact closed-loop servo driver designed for NEMA17 (42mm) stepper motors

Schematic PCB

Graduation project based on 51 microcontroller vending machine design (schematic simulation source program, etc.)

This article designs a vending machine based on the 80C51 microcontroller produced by INTEL.

Schematic PCB

Raspberry Pi RP2040 direct drive DVI/HDMI interface display cool display

These demos all use Adafruit's PicoDVI branch, which makes the video framebuffer look like a regular Adafruit_GFX object, which makes drawing very easy.

Schematic PCB

Pandora smart remote control car based on RT-Thread

The Pandora McNado smart car based on Rt-Thread is composed of chassis, drive, battery, Bluetooth, APP control, omnidirectional wheels, etc.

Schematic PCB

ESP32-breakout：ESP32S2 + Sharp memory LCD + prototyping area

ESP32S2 + Sharp memory LCD + prototyping area

Schematic PCB

SWD offline programmer

This project uses STM32F103RET6 as the main control, and is modified based on ST's official CMSIS-DAP project to achieve offline and read-protected programming (because the project currently only has F103 series offline programming requirements, so only F103 programming is temporarily added. write algorithm).

Schematic PCB

Power Profiler Kit II - Open source second-generation power measurement kit from Nordic

The Power Profiler Kit II (PPK2) is a stand-alone unit that, in addition to external hardware, can measure and optionally source current on all Nordic DK boards from sub-uA up to 1A.

Schematic PCB

Infrared remote control alarm (schematic + PCB diagram + program + documentation).rar

The infrared controlled temperature alarm produced for this competition took half a month to make. It is a simple device made of AT89S52 with LCD 12864 as the display platform, including infrared remote control, temperature measurement, time display, alarm reminder and picture browsing. Infrared controlled temperature sensor.

Schematic PCB

Tetris design based on STM32 (source program, schematic diagram, PCB)

Tetris design based on STM32, including source program, schematic diagram, and PCB files

Schematic PCB

Design of forehead thermometer based on STM8S handheld non-contact infrared thermometer gun MLX90614 (schematic diagram, PCB, source program)

Based on the STM8S handheld non-contact infrared thermometer gun MLX90614 forehead temperature gun design, including schematic diagram, PCB, source program, etc.

Schematic PCB

Building construction monitoring and security system

Whether during construction or in use, civil construction projects require real-time health monitoring of the building structure, such as inclination changes, wall subsidence displacement, support pressure, concrete solidification temperature...

Traditional monitoring methods generally use on-site Wiring, manual scheduled patrols, and on-site reading with handheld instruments, the use of IoT technology is seriously insufficient. Therefore, this project will use LoRa networking and IoT technology to implement wireless and automated building monitoring applications.

Schematic PCB

Open source power meter: with power supply function, dedicated to IoT power consumption measurement

The biggest feature of testing the power consumption of IoT devices is the high dynamic range, a few uA in the sleep state and hundreds of mA in the transmitting state, and it supports dynamic switching of the measurement range. The open source power meter ZS1100A has a dynamic measurement range of 1uA to 1.5A, a resolution of 100nA, and an accuracy of 1% ± 200 nA, which is very good.

Schematic PCB

Sony's super powerful IoT kit based on its own CXD5602 (open source information)

The biggest highlight of this kit is Sony's own 6-core microcontroller CXD5602, which comes with 1.5MB of general-purpose SRAM, 64KB of backup SRAM, and a main frequency of 156MHz. There is also an M0+ core assist processor for IO control management, which comes with 256KB of general-purpose SRAM. The built-in GNSS receiver supports GPS and GLONASS. Others include 2D graphics acceleration (supporting rotation, scaling, mixing, etc.); dedicated sensor acquisition peripherals (with its own 40KB FIFO and supporting preprocessing) supporting SPI, I2C and other interface methods; DCMI camera interface and I2S audio peripherals All pretty good too.

Schematic PCB

Single-button keyboard based on ESP32-S3 with color screen

Schematic PCB

Snake game design based on STM32 (program, PCB)

Snake game design based on STM32, including program and PCB files

Schematic PCB