Development watchcopy

Introduction: Develop and debug the auxiliary development board of RT-Thread system to speed up the development progress.

Schematic PCB

HM1160 single cell lithium battery power indicator

Introduction: HM1160 is a single-cell lithium battery power indicator chip with built-in comparator and feedback loop to detect 4 voltage points. The output adopts OPENDRAIN structure, which is convenient for customers to use IO port or LED indication.

Schematic PCB

Level_Motion Detection

Introduction: A sensor based on Tuya Smart is combined with the MPU6050 attitude sensor and uses an MCU solution.

Schematic PCB

110V input sampling

Introduction: According to the needs of a certain Party A’s father, the device has a 110V voltage signal input. Initially, I thought that 110V was a level signal, and I planned to use a relay to implement it. Later, Party A’s father sent me a request for 110V signal control, and I suddenly realized that it turned out that 110V needed to be processed by analog sampling.

Schematic PCB

AD7175 test board

Introduction: This project is a test board used to test the performance of Analog Devices' low-noise, fast setup, multiplexing, 2/4 channel (fully differential/pseudo-differential) 24-bit Σ-Δ ADC AD7175.

Schematic PCB

MPU6050-GY521 attitude sensor module

Introduction: This project is a GY-521 module verification solution based on MPU-6050 three-axis accelerometer and three-axis gyroscope.

Schematic PCB

Handheld speed measuring pen

Introduction: This project is a handheld tachometer based on attiny and infrared tube, using attiny85 microcontroller, SMD infrared tube solution, using lm321 op amp, dual series cr2032 battery power supply and 0.91-inch OLED screen

Schematic PCB

20A high current AC/DC current detection module-with tutorial

Introduction: This project uses the ACS712ELCTR-20A-T Hall effect current sensor chip, which has an accuracy of ±1.5% and supports both DC and AC power.

Schematic PCB

[Hangshun Training Camp] Learning board design based on Hangshun HKF030

Introduction: Learning board design based on Hangshun HKF030, used to verify the functions of HKF030

Schematic PCB

Infusion alarm 001

Introduction: A Bluetooth alarm device for infusion detection

Schematic PCB

MiniDSO (based on Lao Liu’s design)

Introduction: The third version of mini dso by Lao Liu of station B. I have no PCB experience, so I am just copying a cat and imitating a tiger. I can only say that it can be used, and those who are capable and interested will continue to improve it.

Schematic PCB

[Tuya Smart] Internet Temperature and Hygrometer

Introduction: Intelligent temperature and humidity meter based on RX3 module. Instructions for use: 18650 battery powered, USB charging, temperature, humidity, and battery power can be displayed on the mobile phone. The temperature upper limit setting, temperature lower limit setting, humidity upper limit setting, and humidity lower limit setting can be performed.

Schematic PCB

[Hangshun Training Camp] Outdoor temperature, humidity and pressure sensor

Introduction: Universal I2C to RS485 sensor module standardizes the I2C signal changes of the temperature, humidity and air pressure sensor into RS485 signals

Schematic PCB

[Tuya Smart] Intelligent dehumidification industrial controller based on Arduino-582526A

Introduction: 1. Arduino-based industrial dehumidification controller (WIFI version) is suitable for large dehumidifiers (such as skating rink dehumidification) 2. The threshold can be set remotely by mobile phone 3. Current temperature and humidity can be viewed in real time 4. Automatic reporting when temperature and humidity change (Temperature changes by 0.1°C, humidity changes by 1%)

Schematic PCB

Through-beam photoelectric switch

Introduction: Through-beam photoelectric sensor

Schematic PCB

Wireless remote control obstacle avoidance vehicle

Introduction: 51 microcontroller main control, 7712 remote control

Schematic PCB

[Digital Sensor] TSL1401CL digital photoelectric sensor

Introduction: This project is TSL1401CL digital photoelectric sensor

Schematic PCB

[Digital Sensor] FDC2214 digital capacitive sensor

Introduction: This project is FDC2214 digital capacitive sensor

Schematic PCB

[Digital Sensor] MPU6050 digital acceleration and gyroscope sensor

Introduction: This project is MPU6050 digital acceleration and gyroscope sensor

Schematic PCB

[Digital Sensor] LDC1314 digital inductive sensor

Introduction: This project is LDC1314 digital inductive sensor

Schematic PCB