RX5808 receiver ESP32 version

The hardware design adopts upper and lower layer design. The upper layer is the control circuit and the lower layer is the dual receiving circuit. The interface design is based on LVGL.

Schematic PCB

Modular, open-source test & measurement chassis

The EEZ Bench Box 3 (BB3) represents a new class of modular test and measurement (T&M) equipment. It provides a complete open source hardware and software framework that bridges the gap between DIY hobbyist tools and professional desktop equipment and combines their best features. Inspired by the EEZ H24005 power supply, BB3 has attracted many enthusiasts with its extensive feature set, rich user interface, DIY friendliness and completely open source design. BB3 will initially feature modules that provide the same functionality as the H24005, but these modules will plug into a single device, providing improved modularity, greater capacity, more processing power, an easier-to-use interface and enhanced flexibility, all These are available in compact form factors.

Schematic PCB

ESP32-Smart-Watch - Open source smart watch based on ESP32 WROOM

This project is a completely open source smart watch based on the ESP32 WROOM module, with a very high degree of completion. In the project design, serial communication and charging are completely through the onboard micro USB interface, without any external interface board processing.

Image recognition intelligent tracking car source code based on TMS320F2812

The system is an intelligent tracking device based on TMS320F2812, which has the function of intelligently locking targets and automatically tracking locked targets. CPLD is used to obtain image information collected by the camera, and TMS320F2812 is used to process the image information. Median filtering, corrosion and other algorithms are used to extract target information, and then the target coordinates are calculated. The car movement is controlled through the internal PWM module of the DSP, and the target coordinates are wirelessly sent to the handheld device. Remote control device to achieve real-time tracking of targets.

Schematic PCB

2021 College Student Electronic Design Competition Topic F Outstanding Works Collection (Intelligent Medicine Delivery Car)

Schematic PCB

Variable speed constant frequency wind power generation system operation and control research source code based on TMS320F2812

The AC excitation variable speed constant frequency wind power generation experimental system was developed using TI's TMS320F2812 to complete the maximum wind energy tracking control experiment.

Schematic PCB

Fluke early model 8020A multimeter schematic diagram

The very early model was a bit crude.

Schematic PCB

Mega-Cube: Light cube with 4096 RGB LEDs based on NXP i.MXRT1060

Mega-Cube is a light cube that drives 4096 LEDs based on PL9823. The main control is Teensy4.0 based on NXP i.MXRT1060 FlexIO function and many 595 shift registers. It can control up to 32 channels, each channel 1000 LED.

Schematic PCB

CANT: CAN bus simulation implementation

There are many I/O methods that simulate UART, SPI, and I2C protocols, but there are very few that simulate CAN protocols. The CANT introduced today is a CAN bus simulation implementation. The original project was demonstrated on the ST Micro Nucleo-H743ZI board. The author recently launched a C and Python package - canhack, which facilitates porting to various chips without CAN.

Schematic PCB

esp32s2-lepton: ESP32s2 thermal imager

​ESP32s2 Thermal Imager=ESP32s2 + Lepton 3.5 + Battery charger + 240x240 pixel LCD

Schematic PCB

Design and implementation of MP3 player based on STM32 (MDK complete source code provided)

A design example of implementing a simple MP3 Player using an STM32 processor. This comprehensive application example helps readers understand the applications of STM32, SPI interface, SD card, TIMER, interrupts, FAT file system, USB, etc.

Schematic PCB

USB2.0 full-speed analyzer based on Raspberry Pi RP2040

This is a simple USB sniffer based on the Raspberry Pi RP2040. It supports low speed and full speed modes. The firmware presents itself as a virtual COM port (VCP), so no additional software is required and it is compatible with all operating systems.

Schematic PCB

Open source power supply EEZ BB3: based on stm32 H7 main control board, voltage supports 0-80V, current 0-10A

Schematic PCB

Lu Feikui, Qinheng RISC-V smart bracelet

It adopts Qinheng's self-developed RISC-V microprocessor "Highland Barley V4" and integrates 2Mbps low-power Bluetooth on the chip. It is equipped with a blood oxygen and heart rate module, a nine-axis sensor, a motor drive module, a low-power touch detection module and a 0.96-inch high-definition IPS display to meet the application needs of general bracelets.

Schematic PCB

SimplePnP: an open source PCB placement machine for personal use (including design files, schematics, source code, software, etc.)

SimplePnP is designed to be reliable, accurate, affordable, and adaptable to a wide range of components. It's a great choice for electronics startups, inventors, researchers, and hacker spaces.

Schematic PCB

Full open source: Microchip’s complete solution for wearable ECG devices

All information is fully open, and there is also a mobile APP, and the algorithm is also made public.

Schematic PCB

Protues simulation example (8051)-PWM wave output (adjustable)

Protues simulation example (8051)-PWM wave output (adjustable)

Schematic PCB

CA-53W calculator watch

This computing watch is designed using the SAML22 ARM microcontroller. This particular microcontroller has a segmented LCD controller capable of driving the LCD used inside the watch.

Schematic PCB

PicoCray: 9 Raspberry Pi pico RP2040 for parallel computing

The PicoCray project connects multiple Raspberry Pi Pico microcontroller modules into a parallel architecture, utilizing the I2C bus to communicate between nodes

Schematic PCB

ESP32s2 CO2 Monitor

ESP32s2 CO2 Monitor=ESP32s2 + Sharp memory LCD + CO2 Monitor

Schematic PCB