OM13506: PCF8553 LCD Demonstration Board

Schematic PCB

ESP32s2 CO2 Monitor

ESP32s2 CO2 Monitor=ESP32s2 + Sharp memory LCD + CO2 Monitor

Schematic PCB

2021 College Student Electronic Design Competition Topic F Outstanding Works Collection (Intelligent Medicine Delivery Car)

Schematic PCB

Li-ion battery monitoring and fuel gauge evaluation board based on STC3100

Lithium-ion battery monitoring and gas meter evaluation board based on STC3100

Schematic PCB

Data transparent transmission based on MM32W wireless MCU series

Introducing a Bluetooth case - a data transparent transmission application developed based on the MM32W series.

DER-832 - Two-wire (no neutral), wide-range, isolated flyback Bluetooth wall switch based on LinkSwitch-TN2 and Nordic BLE microcontroller

Schematic PCB

CN0384

Fully integrated thermocouple measurement system using low-power, precision, 24-bit Σ-Δ ADC

Schematic PCB

ST25R3916 based NFC reader expansion board for STM32 and STM8 Nucleos

ST25R3916 based NFC reader expansion board for STM32 and STM8 Nucleo

Schematic PCB

Teacher ChaN’s latest power strip

The style of enameled wire is as usual, and the craftsmanship is still excellent. The power board designed this time is made of double panels, and a copper-laying design is applied. The insulation layer is laid first and then the copper. If the device on the front needs to be grounded, break the insulation layer and solder it to the copper.

Schematic PCB

2020 Electrical Contest Question E-Amplifier Nonlinear Distortion Research Device (Nanjing University)

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

CN0383

Fully integrated 3-wire RTD measurement system using low-power, precision, 24-bit Σ-Δ ADC

Schematic PCB

Mini-DSO - a low-cost simple oscilloscope

A simple oscilloscope made of STC8A8K MCU. The microcontroller uses STC8A8K64S4A12 working at 27MHz. The display uses a 0.96 OLED with a resolution of 128x64. This oscilloscope project is easy to start and covers the necessary measurement functions. Supports normal mode, single mode, and automatic mode. It has trigger mode selection, such as level trigger, and comes with saved settings. Mini-DSO input is single-channel mode, and the second/division size can support a variety of: 500ms, 200ms, 100ms, 50ms, 20ms, 10ms, 5ms, 2ms, 1ms, 500us, 200us, 100us, and the voltage acquisition range is 0 to 30V. The sampling rate can reach 250kHz@100us/div.

Schematic PCB

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

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

15kW, three-phase, three-level active front-end (AFE) bidirectional converter for industrial and electric vehicle DC fast charging applications

15 kW, three-phase, three-level Active Front End (AFE) bidirectional converter for industrial and electric vehicle DC fast charging applications

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

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

RP2040 based ohmmeter with audio and ribbon feedback