CH340N USB-TTL downloader

Introduction: CH340N downloader, usb-ttl

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WIFI car

Introduction: A WIFI car I drew by myself

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IoT watch

Introduction: This is a watch I made myself. The 3D case is designed according to my own needs and can be used without it.

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Smart Figure Box [miniBox]

Introduction: Give your hands a home, not just for decorations

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HX710 High Precision Voltage Meter

Introduction: HX710 makes a cheap high-precision voltmeter

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Air quality detector

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

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Webcam voice car

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

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Webcam car remote control

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

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8266 walnut shake control panel-with 18650 battery holder

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

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[Verified] Arduino O development board

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

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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.

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ESP8266 retro small TV

Introduction: 8266 retro small TV

Arduboy game console

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

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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

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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.

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【Solicitation Order】ESP8266-WS2812B

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

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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.

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lantern changes

Introduction: Laowang lantern modified ws2812 circular circuit board

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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