Open Source 150M Oscilloscope Differential Probe

The PD150 is a compact 150MHz differential oscilloscope probe for engineers on a budget and advanced hobbyists. It has advanced features such as automatic DC offset voltage zeroing and low-frequency common-mode rejection tuning. It will also provide complete documentation in the spirit of old-school "anchor" test equipment, detailing its working principles in addition to typical instructions and specifications.

Schematic PCB

Open source 12-lead portable electrocardiograph

This open source has a complete host computer, slave computer and schematic diagram, as well as a detailed design paper.

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

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.

Schematic PCB

The early mobile phone system PalmOS was ported to Raspberry Pi RP2040

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Open source planet exploration vehicle releases V2.0 version

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

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

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2017 Electrical Contest Question K-Analysis of Single-Phase Electrical Appliances-Design Plan and Report (3 National Awards)

Schematic PCB

2017 Electronic Competition H Question-Remote Amplitude and Frequency Characteristics Test Device-Shengyi Works-Circuit Scheme

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2017 National College Student Electronic Design Competition Question H-Remote Amplitude and Frequency Characteristics Tester-Paper

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2017 Electronic Competition H Question-Remote Amplitude-Frequency Characteristics Test Device-Design Plan and Report (3 National Awards)

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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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2017 Electric Power Competition Question A-Microgrid Simulation System-National First Report + Schematic Diagram + Simulation Document (Changsha University of Science and Technology)

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2018 Electronic Competition Question E-Energy Recovery Device (Xidian University)

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

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

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2018 Electronic Competition Question D-Gesture Recognition Device (First Prize in Hebei Province)

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2018 Electronic Competition Question D-Gesture Recognition Device (Guangxi Guilin University of Electronic Science and Technology)

Schematic PCB