UnPhone, an IoT platform based on esp32s3 (with a 300-page IoT textbook)

Schematic PCB

Open source lab-grade automated microscope

Pomelo, a low-power, open-source gamma-ray spectrometer

Schematic PCB

HealthyPi Move: Open source, smart health watch that is as good as professional ones

Supports continuous or intermittent monitoring of important biometric signals such as ECG, heart rate, HRV, PPG, SpO₂, blood pressure trend and respiration. It integrates daily use and advanced research applications.

Schematic PCB

Tesla Roadster open source design data (battery monitoring board, vehicle display system, HVAC controller, diagnostic software)

Schematic PCB

Open source calculator CG-35, RPN calculator similar to HP-35

Schematic PCB

Magnetic levitation system based on STM32F407

Support revolution, fixed height, side floating

Schematic PCB

ardEEG: Low-cost brain-computer interface supporting 8-channel EEG, EMG and ECG biosignal measurements

Schematic PCB

Wee Noise Makers PGB-1: Open Source Audio Synthesizer

Schematic PCB

Hackbat: Open source hacker hardware platform based on RP2040, penetration testing tool

Schematic PCB

Tildagon: EMF reusable electronic badge, beyond 2024

Schematic PCB

Green Smart BMS: Intelligent Battery Management System

The project originated when the author purchased an electric motorcycle for his daughter and replaced its original lead-acid gel battery with a lithium battery pack. Due to the lack of smart, cheap and easy to configure lithium battery management systems on the market, the author decided to make one himself.

Schematic PCB

Open ECU control module

Schematic PCB

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

Schematic PCB

Bus Pirate 5: Open source serial, SPI, I2C and 1-Wire development tools

Schematic PCB

Open source EtherCAT servo driver board design

Schematic PCB

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