Homemade 10KV electronic load

Commercial electronic loads are more expensive, especially high-power loads such as computer power supplies that must handle transient current spikes well above their nominal ratings (1800W spike for a 600W GPU) and should be tested under worst-case conditions to Ensure stability.

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Breadboard without jumpers: Based on Raspberry Pi Pico, analog switch matrix replaces jumpers

Flirting with jumper caps is a common practice on most boards, but not this board, which is designed to replace all those wires with an analog switch matrix. All one has to do is plug in the device and make a virtual connection on the accompanying GUI. There are also many built-in functions such as DAC and ADC, and the circuit can be switched under the prototype as needed. It also has some LEDs embedded in the breadboard area that light up and provide visual cues that they are connected to each other.

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An open source project for underwater sensor nodes based on single-pair Ethernet technology SPE (from tutorial to actual combat, English)

Single-Pair-Ethernet technology (SPE, Single-Pair-Ethernet) describes the transmission of Ethernet through only a pair of copper cores. In addition to transmitting data through Ethernet, it can also simultaneously provide power to terminal devices through PoDL (power supply over data lines).

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Laser projector project made by teacher ChaN

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

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

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2018 Electronic Competition Question D-Gesture Recognition Device (Anhui University)

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2018 Electronic Competition Question B-Fire Fighting Aircraft (Dalian University of Technology)

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

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

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2020 Electronic Competition Question D-Obstacle Avoidance Aircraft (Chongqing University of Science and Technology)

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2020 Electronic Competition Question A-Wireless Motion Sensor Node Design (Chengdu University of Information Science and Technology)

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2020 Electronic Competition Question A-Wireless Motion Sensor Node Design (Dalian University of Technology)

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2020 Electronic Competition Question A-Wireless Motion Sensor Node Design (East China Jiaotong University Institute of Technology)

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Distributed temperature and humidity acquisition system based on STM32H745I

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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.

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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.

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HealthyPi 5: open source biosignal acquisition board

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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.

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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