FPV car powered by ESP32

This ESP32-based FPV car can stream video over Wi-Fi and only needs a small LiPo battery for power. It can be controlled remotely and accurately through any web browser.

Schematic PCB

Bicycle speed measurement based on Hall sensor

Ultra-simple Hall sensor speed measurement, the value is displayed on the 16x02 LCD display

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

RP2040 based ohmmeter with audio and ribbon feedback

Thunderbolt USB4 open source oscilloscope: 4 channels, bandwidth 350MHz, sampling rate 1Gsps, host computer supports Windows and Linux

Not only is it open source, the author also has a super-detailed record of the design process. The bandwidth of each analog channel is not reduced in order to reduce costs. Each channel has a bandwidth of 350MHz, and higher sampling rate support can be designed in the future. Thunderbolt USB4 interface, speed up to 1GB/s (8Gbps)

Schematic PCB

Doubly-fed wind power generation system based on direct power control and its low voltage ride-through source code

A stator-side direct power control algorithm based on multi-frequency proportional integral resonant controller

Schematic PCB

FireAnt: Low-cost, thumb-sized, breadboard-friendly FPGA development board (including schematics, source code, etc.) for manufacturers and hardware designers

FireAnt is the first third-party development board in the Efinix Trion product family. It provides an easy-to-use development platform for FPGA manufacturers and enthusiasts. Powered by Efinix Trion T8, FireAnt requires only a PC and requires no additional components. Breadboard-friendly design allows applications to be quickly deployed using sensors, peripherals or other interfaces. It is the perfect solution for manufacturers prototyping their projects or for digital design students to quickly learn FPGA development using the new Efinix platform. The power/performance/size advantages of Trion T8 FPGA also make it ideal for edge IoT applications.

Schematic PCB

[Hengtuo Technology] Hawk 2 open source flight control data package V1.0

HT-Hawk is an open source flight control system suitable for multi-rotor aircraft. It supports four- and six-rotor aircraft. It is an open source autopilot system developed for multi-rotor aircraft enthusiasts. It can achieve attitude stabilization and provide users with excellent performance. Flight experience.

Schematic PCB

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

Schematic PCB

Stepper motor circuit diagram

Stepper motor circuit diagram (dwg format)

Schematic PCB

Graduation project based on 51 microcontroller vending machine design (schematic simulation source program, etc.)

This article designs a vending machine based on the 80C51 microcontroller produced by INTEL.

Schematic PCB

Power Profiler Kit II - Open source second-generation power measurement kit from Nordic

The Power Profiler Kit II (PPK2) is a stand-alone unit that, in addition to external hardware, can measure and optionally source current on all Nordic DK boards from sub-uA up to 1A.

Schematic PCB

2021 College Student Electronic Design Competition Topic C Outstanding Works Collection (Three-Port DC-DC Converter)

Schematic PCB

Pandora smart remote control car based on RT-Thread

The Pandora McNado smart car based on Rt-Thread is composed of chassis, drive, battery, Bluetooth, APP control, omnidirectional wheels, etc.

Schematic PCB

Epidemic table lamp

“Using the color of the desk lamp to show the growth rate of COVID-19 virus infections in a country or region, the display effect is more intuitive and not as stressful as chart data.”

Schematic PCB

SWD offline programmer

This project uses STM32F103RET6 as the main control, and is modified based on ST's official CMSIS-DAP project to achieve offline and read-protected programming (because the project currently only has F103 series offline programming requirements, so only F103 programming is temporarily added. write algorithm).

Schematic PCB

ESP32-breakout：ESP32S2 + Sharp memory LCD + prototyping area

ESP32S2 + Sharp memory LCD + prototyping area

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

Intelligent home appliance control system with environmental detection and networked real-time monitoring

Source code sharing of ST_SensorTile design competition works

Schematic PCB

Open source power meter: with power supply function, dedicated to IoT power consumption measurement

The biggest feature of testing the power consumption of IoT devices is the high dynamic range, a few uA in the sleep state and hundreds of mA in the transmitting state, and it supports dynamic switching of the measurement range. The open source power meter ZS1100A has a dynamic measurement range of 1uA to 1.5A, a resolution of 100nA, and an accuracy of 1% ± 200 nA, which is very good.

Schematic PCB