Air quality detector

Introduction: ESP-12F main control module, can measure temperature and humidity, formaldehyde, TVOC, PM2.5

Schematic PCB

Webcam voice car

Introduction: Controlling the car through the voice of the camera, a failed project

Schematic PCB

Webcam car remote control

Introduction: Use old mobile phones and webcams to build a long-range reconnaissance vehicle

Schematic PCB

8266 walnut shake control panel-with 18650 battery holder

Introduction: Use esp8266 to play music, control motors and control RGB2812, with battery protection

Schematic PCB

[Verified] Arduino O development board

Introduction: Based on Atmega328P, integrated I2C interface 12864OLED and buttons.

Schematic PCB

USB-TTL serial communication module-CH340C

Introduction: The USB-TTL module of the CH340 chip supports the optocoupler output for connecting to a radio station for transmitting CW.

Schematic PCB

ESP8266 retro small TV

Introduction: 8266 retro small TV

Arduboy game console

Introduction: Arduboy game console (including Flash, multiple games)

Schematic PCB

lora herding cattle base station 4G+MQTT

Introduction: This is the base station part that uses Lora to herd cattle. It collects GPS data and sends it to a base station 10 kilometers away through Lora. Then connect to MQTT through 4G and send it to the server

Schematic PCB

Remote boot and remote monitoring computer multi-function small secondary screen

Introduction: There are many secondary screen projects, many remote computer startup projects, and many Internet of Things projects. I just studied them and put them together.

Schematic PCB

【Solicitation Order】ESP8266-WS2812B

Introduction: WS2812B heart-shaped light panel based on Essence ESP module ESP12F

Schematic PCB

20-key keypad, your right-hand assistant! 【Pro Micro】

Introduction: 1. Independently copy and paste shortcut keys. 2. Open source QMK program, full-key programmable. 3. All keys are 1U. The keycaps are simple and cheap. There are no satellite shafts and no positioning plate is needed. 4. Configured RGB lights to display layer status.

Schematic PCB

Raspberry Pi clock: automatic correction, including date, day of the week, temperature, sunny or rainy day

Introduction: Raspberry Pi + MAX7219 LED dot matrix, python programming, realizes the automatic correction function of the network, displays the date, day of the week, temperature, sunny and rainy days.

Schematic PCB

lantern changes

Introduction: Laowang lantern modified ws2812 circular circuit board

Schematic PCB

Digital tube perpetual calendar based on arduino

Introduction: Digital tube perpetual calendar based on Arduino. The program is written using Mixly, and Kinneng's library is used for the lunar calendar. If it is powered by a battery, leave D2 blank. If it is powered by a power supply, you can delete the charging circuit.

Schematic PCB

LDO solution for dormitory door opening floor

Introduction: A simple door opening device based on ESP8266, using the RC522 NFC module to control the rotation of the reduction motor to open the door.

Schematic PCB

AS5600

Introduction: AS5600, suitable for different hole structures, PCB defaults to CW, please forgive me for the large number of silk screens in the second and second grades. Alumni and netizens are welcome to communicate.

Schematic PCB

[Training Camp] Robot dog based on Hi3861

Introduction: This project is a robot dog controlled by the Hi3861 Hongmeng module of Chuanzhi Education

Schematic PCB

[Internet of Things] Hongmeng smart IoT switch based on Hi3861

Introduction: Hongmeng Intelligent IoT design based on Hi3861 uses Hi3861 to control the steering gear to realize control switches and operate remotely through the network. This is my first time drawing a board. Welcome everyone to express your opinions in the comment area.

Schematic PCB

esp32 badge GC9A01 round screen uses ESP32-S module

Introduction: A small ornament made of ESP32-S module and GC9A01 circular screen. And built-in tf card.

Schematic PCB