WEMOS D1 Mini ESP8266 ESP-12F Micro-USB Development Board
VAT inclusive; Computed calculations added locally.
Overview
Wemos D1 Mini NodeMCU – Compact ESP8266 WiFi Development Board
Build smart and connected electronics projects with the Wemos D1 Mini NodeMCU, a compact and versatile development board based on the ESP8266 ESP-12E/F platform.
With built-in 2.4GHz WiFi, a compact footprint, and support for popular programming environments such as Arduino IDE, NodeMCU (Lua), and MicroPython, the D1 Mini is ideal for beginners, makers, students, and experienced IoT developers.
The board breaks out the ESP8266's available ESP-12E/F pins for easy prototyping and includes additional 3.3V and GND connections for connecting multiple sensors and peripherals. An onboard Flash button makes firmware uploading and development more convenient.
Its small size makes it especially useful for smart home automation, wireless sensors, IoT devices, robotics, remote monitoring, web-controlled projects, and custom embedded systems.
For reliable USB programming and stable operation, use a good-quality USB cable capable of supplying adequate current.
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Product Technical Information
Technical Details
The Wemos D1 Mini NodeMCU is a small yet capable WiFi development board based on the ESP8266 ESP-12E/F module. It is designed to simplify the development of connected electronics and IoT applications while maintaining a compact form factor.
Built-in WiFi Connectivity
The ESP8266 provides integrated WiFi connectivity, allowing the D1 Mini to communicate with wireless networks and Internet-based services without requiring an additional WiFi module.
This makes it suitable for applications such as remote sensor monitoring, web-controlled devices, smart switches, home automation, and wireless data collection.
Multiple Programming Options
The D1 Mini can be programmed using several popular development environments:
- Arduino IDE using C/C++-style Arduino programming
- NodeMCU firmware using Lua
- MicroPython for Python-based embedded development
This flexibility makes the board suitable for both educational projects and more advanced IoT development.
Convenient Pin Access
The board exposes the available ESP-12E/F pins for connecting external sensors, displays, relays, LEDs, motors, and other peripherals. Additional 3.3V and GND pins make it easier to power and connect multiple external components.
Compact Design
Measuring approximately 34.2 × 25.6mm and weighing around 3 grams, the D1 Mini is suitable for projects where PCB space is limited. It can be integrated into compact enclosures, wearable prototypes, small robots, smart devices, and custom IoT products.
Flash Button
An onboard Flash button provides convenient access to the ESP8266's programming/firmware upload functionality during development.
USB Programming
The board can be connected to a computer through its USB interface for programming and power. A good-quality USB cable is recommended to ensure stable power delivery and reliable computer detection.
Analog Input
The board provides one analog input channel. The specified maximum analog input voltage is 3.2V. Always verify the voltage of an analog signal before connecting it to the ESP8266 ADC input.
Applications
- IoT Projects: WiFi-connected sensors and monitoring devices
- Smart Home: Wireless lighting, appliance and sensor control
- Robotics: WiFi-controlled robots and wireless communication
- Automation: Remote control and monitoring systems
- DIY Electronics: Custom connected devices and prototypes
- Web-Controlled Projects: Local web servers and remote interfaces
- Educational Projects: Learning IoT, programming and embedded systems
- Data Logging: Wireless sensor data collection and monitoring
- Smart Agriculture: Remote environmental and agricultural sensors
Important Notes
- Product images are for illustration purposes and may differ slightly from the actual product.
- The ESP8266 operates at 3.3V logic. Do not directly apply 5V signals to its GPIO pins.
- The analog input should not exceed the specified 3.2V maximum.
- Use a reliable USB cable and stable power source for programming and operation.
- Product dimensions and weight may have minor variations due to manual measurement.
- Pin functions and specifications may vary slightly between different D1 Mini board versions or manufacturers. Verify the actual board pinout before connecting peripherals.
- Incorrect voltage, reverse polarity, short circuits, or improper wiring can permanently damage the board.
Package Includes
- 1 × Wemos D1 Mini NodeMCU ESP8266 WiFi Development Board
Frequently Asked Questions
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