The Wemos D1 Mini NodeMCU ESP-12F with micro-USB is a compact Wi-Fi development board based on the popular ESP8266 chip. Known for its balance of reliability, affordability, and ease of use, this board is perfect for makers, students, and engineers. The micro-USB connector ensures broad cable compatibility, making it easy to power and program the device. Combined with its small size and extensive shield ecosystem, it’s a go-to solution for IoT development, smart devices, and rapid prototyping.
Key Features
- Micro-USB Port: Works with widely available micro-USB cables
- Proven ESP-12F Module: Strong Wi-Fi with integrated antenna
- Arduino IDE Ready: Program using Arduino IDE, Lua, or MicroPython
- Compact Design: 34 × 25 mm footprint, easy to embed in devices
- Full Shield Support: Compatible with Wemos D1 Mini expansion shields
- Onboard Power Regulator: Accepts 5 V via micro-USB, outputs safe 3.3 V logic
- Breadboard Friendly: Pre-soldered headers simplify testing and prototyping
Technical Specifications
| Specification | Details |
|---|---|
| Microcontroller | ESP8266 (ESP-12F module) |
| Wi-Fi Standard | IEEE 802.11 b/g/n @ 2.4 GHz |
| USB Interface | Micro-USB (with onboard CH340/CP2102) |
| Operating Voltage | 3.3 V logic (regulated from 5 V input) |
| Digital I/O Pins | 11 GPIO (supporting PWM, I2C, SPI, UART) |
| Analogue Input | 1 × ADC (A0: 0–3.2 V) |
| Flash Memory | 4 MB typical (varies by module) |
| Clock Speed | 80 MHz default (up to 160 MHz) |
| Dimensions | ~34 × 25 mm |
| Shield Ecosystem | Compatible with Wemos D1 Mini shields |
Applications
- Smart Home Projects: Wi-Fi switches, relays, alarms, and sensor hubs
- IoT Development: Prototype connected devices with easy Arduino support
- Educational Use: Ideal for students learning microcontrollers and networking
- DIY Gadgets: From LED controllers to portable Wi-Fi devices
- Remote Data Logging: Capture sensor data and send it to cloud platforms
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