2017 Electronic Competition Question B-Rolling Ball Control System National First Report

Schematic PCB

2017 National College Student Electronic Design Competition_Microgrid Simulation System (Question A) Design Report_National Second

Schematic PCB

2020 Electronic Competition G Question-Non-contact Object Size and Shape Measurement (Liaoning Petrochemical University)

Schematic PCB

2020 Electronic Competition Question F-Simple non-contact temperature measurement and identification device (Anhui Division)

Schematic PCB

Distributed temperature and humidity acquisition system based on STM32H745I

Schematic PCB

Voice and vision module based on ESP32S3

Use ESP32S3 to develop a general module with speech recognition and visual recognition functions. It is mainly used for education, science and technology competitions, and creative design of DIY enthusiasts. The interface and functions are compatible with OpenMV, and its IDE can be used as development and debugging software. Most of the overall hardware design is compatible with ESP32S-EYE, so with a little adjustment of the interface definition, it can be compatible with ESP-WHO. ESP-WHO provides examples such as face detection, face recognition, cat face detection and gesture recognition, thus making this software The module is very playable.

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

HealthyPi 5: open source biosignal acquisition board

Schematic PCB

USB-C "switch", hardware open source, firmware provided

The basic functions of USB-C are supported, such as high-speed communication and charging functions. Then this design solves the problem of painless switching between one host and multiple devices, or one device and multiple hosts.

Schematic PCB

Interactive Memory Technology Learning Kit Core64

Core64 combines real core memory and LEDs in a unique interactive way. Core Memory is a magnetic memory technology from the 1960s and 1970s. The tip of the stylus has a magnet that interacts with the LED through Core Memory. In practice, users can think of it as a magnetic touch screen

Schematic PCB

Women's safety device, smart wallet with GSM and GPS location tracking

2 Layers PCB 52 x 96.3 mm FR-4, 1.6 mm, 1, HASL with lead, Blue Solder Mask, White silkscreen; A device for women safety, equipped with GSM and GPS modules for location tracking.

Schematic PCB

Wireless Home Automation (Control and Monitoring) using Nextion HMI Display_MainBoard

2 Layers PCB 56.6 x 83.1 mm FR-4, 1.6 mm, 1, HASL with lead, Green Solder Mask, White silkscreen;

Schematic PCB

Wireless communication based on NRF24 and Arduino Pro Micro

Wireless Communication with NRF24 and Arduino Pro Micro

Schematic PCB

Personnel wireless alarm

2-layer PCB 46 x 75 mm FR-4, 1.6 mm, 1, HASL with leads, black solder mask, white silk screen; With this simple circuit you can make a wireless people counter.​

Schematic PCB

Window invisible magnetic sensor

2 Layers PCB 8.941 x 60.782 mm FR-4, 1.6 mm, 1, HASL with lead, Green Solder Mask, White silkscreen;

Schematic PCB

WilkoL Bat Detector

2 Layers PCB 22 x 89 mm FR-4, 1.6 mm, 1, HASL with lead, Green Solder Mask, White silkscreen;Hackaday project

Schematic PCB

kicad USB splitter: a three-way USB splitter for personal design and use

A simple USB switch so I can swap a keyboard or mouse between two computers.

It is operated by 4 single mechanical switches, 1 for each channel. Simple designs can be implemented.

Schematic PCB

3dfx Voodoo Memory Expansion Board - Revision 1.0

PCB for clipping onto Guillemot MAXI Gamer 3D Voodoo graphics accelerator. The common memory size for these cards is 4 MB. With the help of PCB you can get Voodoo up to 8 MB.

Schematic PCB

W489202ASN1_Ultrasonic sensor schematic diagram

Based on ESP32, HC-SR04 ultrasonic sensor

Schematic PCB

W487304AS1C1_garage board

1-layer PCB 50.1 x 79.9 mm FR-4, 1.6 mm, 1, tinned with leads, blue solder mask, white silkscreen;

Schematic PCB