A smart watch design with all open source software and hardware

Hardware configuration: Dialog Semiconductor DA14683 for master control, with BLE5.0

Schematic PCB

Open source industrial control baseboard made by Arduino for STM32H7

The schematic diagram is open source, you can see if there is anything worth learning from. This baseboard is designed for their previously launched H7 core board.

Schematic PCB

Open source remote and wireless debugger ctxLink

Supports various Cortex-M cores, can be used wirelessly in the local area network, and can be used remotely in the external network.

Schematic PCB

Super cool face-changing mask DIY

The product design is open source and very cool and beautiful.

Schematic PCB

Open source scalar network analyzer design

The author opens up the schematic diagram and supporting Raspberry Pi code. The simulation bandwidth is already 30MHz, and the frequency response is very close to the theoretical simulation, with a difference of about 0.02dB between 1kHz and 30MHz.

Schematic PCB

300nA to 150mA measurement circuit (comes with the new STM32L5 exploration board)

ST has previously launched a board with a static current measurement range of 1nA - 100mA and a dynamic current measurement range of 100nA - 50mA, but it is not open source. This time it’s open source.

Schematic PCB

Fluke early model 8020A multimeter schematic diagram

The very early model was a bit crude.

Schematic PCB

Fluke 17b multimeter schematic diagram

Fluke 17b multimeter schematic diagram

Schematic PCB

Schematic diagram of the 34401A desktop 6.5-digit multimeter released on the Agilent official website

The schematic is in the appendix at the end of the document.

Schematic PCB

Battery-free mini game console (open source software and hardware)

The most interesting part is the problem of energy collection without batteries. Currently, it provides energy collection by clicking buttons and solar energy collection. Ambiq Apollo3 for main control.

Schematic PCB

Open source LCR table design

This work is written by Jean-Jacques Aubry

Schematic PCB

Nordic open source second generation power consumption measurement kit Power Profiler Kit II

Hardware design is difficult, but Nordic is all open source, and PCB, BOM, Gerber, schematics, etc. are all provided. The schematic is also annotated.

Schematic PCB

An open source multimeter suitable for DIY

This project started with STM32F1 and now it uses STM32F3.

Schematic PCB

Open source EEG electroencephalogram design based on STM32H7

Software and hardware are all open source

Schematic PCB

Source Measure Unit μSMU Open Source Project

μSMUs are not meant to replace precision SMUs, but to complement them in cost-sensitive areas where accuracy is not required.

Schematic PCB

Open Source USB Analyzer

The software and hardware are all open source.

Schematic PCB

DM9000 EMI test circuit reference

DM9000 EMI test circuit reference

Schematic PCB

Open source SMU precision power supply equipment

The SMU is a precision power supply device that can measure not only high-resolution voltage sources but also high-resolution current sources. It also integrates bipolar voltage and four-quadrant output functions to facilitate testing of various characteristics. By providing a linear sweep voltage and sweep current, the IV characteristic curve of the instrument can be obtained.

Schematic PCB

Stanford Pupper: an open source quadruped robot dog

The Stanford Pupper is a four-legged robot designed to help K-12 and undergraduate students engage in exciting robotics research.

Schematic PCB

DeepLabCut: Marker-free pose estimation for animals performing various tasks

Label-free pose estimation from user-defined features via deep learning for all animals

Schematic PCB