[Tuya Smart] Gas alarm device

Introduction: This is a gas alarm device based on the Tuya module WR3S. The gas detection part uses the MQ-5 module for detection, and is paired with a 0.96-inch OLED display to display relevant data.

Schematic PCB

Gyroscope of ICM20602

Introduction: A very small icm gyroscope, supports IIC and SPI communication, and has performance exceeding mpu6050

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SHT40_DevKit

Introduction: Sensirion’s latest SHT4x test evaluation board

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51 microcontroller

Introduction: 51 development board

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【ART-Pi】ART-PI display dot matrix expansion board

Introduction: ART-PI display dot matrix expansion board is an expansion board designed based on the ART-PI development board and suitable for beginners. It contains various basic modules, making it easy for beginners to learn and use.

Schematic PCB

[Hangshun Training Camp] Temperature and Humidity Sensor +1113982A

Introduction: Use HK32F103 to measure temperature and humidity and display it. The external detection probe can be led out to measure the human body (or other) temperature, and then several three-color lamps can be lit according to different human body (or other) temperatures. To indicate people's emotions or different physical states. For example, whether there is a fever, etc.

Schematic PCB

ADS1115 solution test board

Introduction: Design an ADS115 high-precision ADC test board

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LMT70 Linear Temperature Sensing Module

Introduction: LMT70 temperature sensor for easy welding

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【ART-Pi】Environmental monitoring expansion board

Introduction: Environmental Monitoring Expansion Board

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Arduino Uno Quick Connect Shield

Introduction: Quick connection board for tracking and obstacle avoidance cars for Arduino Uno. There are two L9110H motor drives on the board, which meet the needs of small-power motor drives for cars. The sensor ports are all led out with XH2.54 ports to facilitate quick connection and replacement of sensors.

Schematic PCB

Temperature and humidity alarm based on ESP12-S and Blinker

Introduction: Taking ESP12-S IoT MCU as the control core, it uses DHT11 temperature and humidity sensor, OLED LCD display, and Blinker mobile client to realize real-time collection, display and over-limit alarm functions of temperature and humidity parameters.

Schematic PCB

[Tuya Smart] IoT temperature and humidity sensor +541726A

Introduction: IoT temperature and humidity detection module based on Tuya smart IoT module and STM32F103C8T6, SHT30

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as5600 magnetic encoder

Introduction: The encoder board screws I drew for the motor I have are m2.5, although I haven’t even successfully driven the open loop yet...haha

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Weather thermometer and hygrometer

Introduction: Based on esp8266, ST7565 LCD screen, DHT11 sensor

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PT100 AD7705

Introduction: Using AD7705 and three-wire PT100 connection, the measurable temperature accuracy is higher than 0.1℃

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[Tuya Smart] zigbee temperature and humidity sensor

Introduction: A development-free zigbee temperature and humidity sensor based on Tuya Smart, using electronic 2032 for power supply

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smart curtains

Introduction: Smart Curtains

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Four-channel temperature to serial port module-DS18B20

Introduction: A serial port module that can read four DS18B20 temperature values, and is equipped with a host computer. The host computer can record historical data to csv files, and at the same time, it can read the csv files and display the historical curves into the coordinate system. Follow the WeChat public account "IoT Zero Demon" and reply "DS18B20".

Schematic PCB

Human body induction charging night light

Introduction: cabinet aisle night light; lithium battery charge management; lithium battery discharge protection; light intensity sensor; pyroelectric human body induction; LED driver; voltage comparator. To obtain detailed development information, follow the WeChat public account "IoT Zero Demon" and reply with the keyword "night light".

Schematic PCB

BME680 gas sensor

Introduction: This project is based on the module design of the gas, humidity, pressure, and temperature sensor BME680.

Schematic PCB