Non-contact thermometer based on ESP8266

A low-cost, non-contact DIY infrared thermometer based on ESP8266 can help people measure their temperature safely and prevent the spread of the new coronavirus.

Schematic PCB

Universal motor driver with speed control based on STM8 and Triac (US version)

Universal motor driver with speed control, based on STM8 and triac (US version)

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

Application of 3V DAC in ±10V

Many modern systems have the majority of their electronics powered by 3.3V or lower, but must drive external loads with ±10V, a range that is still very common in industrial applications. There are digital to analog converters (DACs) available that can drive loads with ±10V swings, but there are reasons to use a 3.3V DAC and amplify the output voltage up to ±10V.

Stepper motor circuit diagram

Stepper motor circuit diagram (dwg format)

Schematic PCB

Protues simulation example (8051)-PWM test

Protues simulation example (8051)-PWM test

Schematic PCB

Raspberry Pi RP2040 direct drive DVI/HDMI interface display cool display

These demos all use Adafruit's PicoDVI branch, which makes the video framebuffer look like a regular Adafruit_GFX object, which makes drawing very easy.

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

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

Schematic PCB

Digital MEMS microphone expansion board based on MP34DT01-M for STM32 Nucleo

Digital MEMS microphone expansion board based on MP34DT01-M for STM32 Nucleo

Schematic PCB

CN0313

EMC COMPLIANT RS-485 Transceiver Protection Circuit

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

CN0270

Complete 4 mA to 20 mA HART solution

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

Motor Control Nucleo Pack with NUCLEO-G431RB and X-NUCLEO-IHM16M1

Motor Control Nucleo Kit with NUCLEO-G431RB and X-NUCLEO-IHM16M1

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

OM13510: PCF85263A I²C-bus Evaluation Board

Quadrant: Gesture audio adjustment based on 4 TOF sensors

Schematic PCB

FRDM-KW41Z: Freedom Development Kit for Kinetis ^® KW41Z/31Z/21Z MCUs

FRDM-KW41Z Development Kit for KW41Z/31Z/21Z MCUs features Cortex-M0+ and 2.4 GHz radio, compliant with Bluetooth Smart/Low Energy (BLE) v4.2 and IEEE 802.15.4 protocols

Schematic PCB

Mobile power supply (adjustment OK program + schematic PCB diagram)

Mobile power supply (adjustment OK program + schematic PCB diagram).

Schematic PCB