Soil moisture detection sensor 2

Introduction: Based on the revision of the commonly used soil moisture sensor V1.2, some circuits are simplified and basic functions can still be achieved. The advantage is cost saving. After the circuit board is coated, it can be inserted into the soil for long-term use. Without coating, it can only be used for less than half a year. will be corroded.

Schematic PCB

esp8266_EPD

Introduction: Driver board using ESP8266 to drive electronic price tags

Schematic PCB

Simple light meter based on Arduino

Introduction: The original project of a simple light meter based on Arduino is sourced from Station B UP: For the source of the Paojiao Bear project, please see the description of the open source agreement of this project. It is based on GPL 3.0. Simply put, it is open source, free, and can be modified at will, but it is required to be open source after modification. The total cost of the light meter is 40 yuan. It works but is not accurate.

Schematic PCB

ESP32-S3-WROOM-1 series development board

Introduction: ESP32-S3-WROOM-1 series development board

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The world's smallest USB to TTL module

Introduction: The world’s smallest USB to TTL module

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ESP-12F minimum programming board

Introduction: ESP-12F minimum programming board

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Relay module with optocoupler isolation

Introduction: Relay module with optocoupler isolation low level trigger

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Common ST7571 dot matrix LCD backplane and boost circuit

Introduction: Common ST7571 dot matrix LCD backplane and boost circuit, suitable for 12PIN LCD screens. The complete capacitor boost part adopts the official typical circuit. Backlight power is provided.

Schematic PCB

nrf24l01 transmitter model aircraft joystick remote control

Introduction: This transmitter can also be used as any commercial RC transmitter for controlling RC toys, cars, drones, etc. To do this, it only requires a simple Arduino receiver, which then generates the appropriate signals to control those commercial RC devices.

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Solder paste dispenser A

Introduction: This is an electric solder paste dispenser for soldering SMT boards. As a DIYer, you need an electric solder paste dispenser.

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Hardware filtered EC11 encoder

Introduction: The hardware filtered EC11 encoder module is very convenient to connect to the development board through DuPont cable. It is used for initial project verification.

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Software threshold infrared tracking module

Introduction: Software threshold infrared tracking module

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Arduino-VFD clock

Introduction: A small VFD clock with onboard photoresistor, temperature and humidity sensor, clock chip and buzzer. Use a dial switch to control it, and you can press and hold it to turn it on and off. Supports automatic brightness adjustment, battery charging and discharging and dual power supply switching.

Schematic PCB

Three-way optocoupler isolation relay development board (WB3S/ESP8266)

Introduction: Based on the multi-channel relay module controlled by Tuya WB3S/ESP8266 module, the relay part can be purchased as a finished 5V optocoupler isolation module.

Schematic PCB

Intelligent three-way optocoupler isolation relay

Introduction: Based on the multi-channel relay module controlled by Tuya WB3S/ESP8266 module, ESP8266 downloads firmware through an external programmer!

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[Hangshun Training Camp] MOLUN Smart Home Multifunctional Development Board

Introduction: The minimum system of PCB board-mounted Hangshun HK32F030MF4P6, the minimum system of ESP-12F (can be replaced by Tuya WB3S), with reserved DHT11 and SHT30 temperature and humidity sensor circuits. Integrated digital tube and reserved 0.96' OLED screen interface, equipped with 2-way relay

Schematic PCB

【Training Camp】MOLUN Colorful Light-397601A

Introduction: 1. Smart colorful lights based on Tuya WB3S module, support external infrared control! You can view @gpdi's project 2. Control the WS2812B colorful lamp based on ESP-12S, connect to Xiao Ai through the lighting blinker, and can be controlled by APP and Xiao Ai's voice!

Schematic PCB

[Tuya Smart] MOLUN Smart Temperature and Humidity Clock

Introduction: A smart colorful clock temperature and humidity meter based on Tuya module WB3S, ESP-12 serves as the MCU, and WB3S is responsible for communication. Thermohygrometer SHT30 and DHT11 are optional. The firmware can be programmed through the onboard CH330N serial port chip, or it can be programmed using the ESP-01S programmer!

Schematic PCB

PCB mini vernier caliper

Introduction: Clone the adjusted version, adjust the scale gaps to be more even, and modify all scales to silk screen layers! (Actual proofing revealed that the top layer of the scale is not smooth) For more information, please view the original project!

Schematic PCB

MolunSmartHomeLights

Introduction: Tuya CBU Wi-Fi&Bluetooth module adapter board can be directly used for SOC development-free colorful lights (WS2812B), or it can be connected to MCU (Arduino development board, ESP8266, etc.) using general module firmware to achieve more Rich features!

Schematic PCB