LM393 photosensitive module (photosensitive 5528, 5mm)

Introduction: A light-sensitive sensor module designed based on LM393 and photoresistor 5528. It has high level with light and low level without light, which is adjustable.

Schematic PCB

Infrared speed measurement module

Introduction: Infrared speed measurement module with ambient light suppression

Schematic PCB

Arduino-based desktop display supports temperature, humidity and brightness monitoring

Introduction: Arduino nano is used with Tao Jingchi 1.8-inch screen to realize a desktop display, and the shell is 3D printed.

Schematic PCB

AD620 weighing amplifier

Introduction: AD620 weighing pedal signal amplifier used with MMOS firmware

Schematic PCB

Intelligent medicine delivery car (Question F)

Introduction: 2021 National College Student Electronic Design Competition National First Prize

Schematic PCB

Capacitive Soil Moisture Sensor (Low Frequency)

Introduction: When the humidity is 0, the frequency is about 5KHZ, and when it is 100%, it is about 500HZ. It is recommended that Arduino developers use the for statement and the pulseIn function to measure multiple times and average the average pulse width to get the average pulse width, and use the map function to convert it into humidity.

Schematic PCB

Thermal flow meter schematic diagram

Introduction: Thermal Gas Flow Meter

Schematic PCB

mini heating table

Introduction: A portable mini heating table powered by PD65W based on ESP8266-12F module.

Schematic PCB

Engineering Competition 8-way Grayscale (Open Source)

Introduction: Eight-way digital grayscale designed for engineering training competition and smart+track logistics handling project. A photosensitive diode is used to detect the black line, and the potentiometer can be adjusted to control the grayscale detection sensitivity. In fact, the vehicle test accuracy is relatively good and can achieve centimeter-level positioning.

Schematic PCB

AS5600 Sensor

Introduction: Improved As5600 sensor module

Schematic PCB

Orange pie configuration board

Introduction: Use orange pie to operate 42 stepper motor, mainly to save wiring.

Schematic PCB

【ESP32C3】Mini development board

Introduction: [Verified] esp32c3wroom mini development board (4cm*4cm, 4-layer board)

Schematic PCB

Cube-410_USB power meter

Introduction: USB power meter Cube series 410 project based on ESP32-U4WDH

Schematic PCB

Air pressure control device

Introduction: This air pressure control device can collect the air pressure in the air bag in real time, and through inflation and deflation, the air pressure in the air bag reaches the set target value and maintains dynamic stability. Won the first prize in this Shenzhen University electronic competition.

Schematic PCB

INA226 voltage and current detection sensor

Introduction: INA226 voltage and current detection sensor

Schematic PCB

Thermal_sensor0.2

Introduction: MAX31855 Verification Board

Schematic PCB

PN532

Introduction: PN532 IC card reader with serial port

Schematic PCB

micro gyroscope

Introduction: Car gyroscope, the program is not open source

Schematic PCB

MPU6050_DMP

Introduction: IMU design based on n76e003 and mpu6050

Schematic PCB

STC12C5A60S2 drives LCD1602 voltage and ammeter

Introduction: Use common existing stock components, the common STC12C5A60S2 microcontroller, and the disassembled LM358 as the current sampling amplification. Internal 10-bit AD converter, displayed with LCD1602 display.

Schematic PCB