Description
The ESP8266 NodeMCU integrates the ESP8266 Wi-Fi SoC with a USB-to-serial interface, making it easy to program via the Arduino IDE or Lua. It offers multiple GPIO pins, PWM, ADC, I²C, and SPI interfaces. Its built-in Wi-Fi allows for fast development of IoT devices, smart home automation systems, and wireless sensor networks. The board also supports deep sleep mode for energy-efficient applications.
Key Features
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ESP8266 Wi-Fi microcontroller with 80 MHz CPU
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Integrated USB interface for easy programming
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Multiple GPIO pins with PWM, ADC, I²C, and SPI support
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Breadboard-friendly form factor
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Deep sleep mode for low-power IoT applications
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Supports Arduino IDE and NodeMCU Lua firmware
Variants
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ESP8266 NodeMCU V2 (CH340 USB)
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ESP8266 NodeMCU V3 (CP2102 USB)
Specifications
| Feature | Details |
|---|---|
| Microcontroller | ESP8266 |
| Operating Voltage | 3.3V |
| Input Voltage | 5V via USB |
| Flash Memory | 4 MB |
| Digital I/O Pins | 11 |
| ADC | 10-bit |
| Wi-Fi | 802.11 b/g/n |
| Clock Speed | 80 MHz |
| Dimensions | 48 × 25 × 13 mm |
Applications
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IoT devices and sensor networks
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Smart home automation
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Wireless data logging and monitoring
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Remote control systems
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Wi-Fi-enabled robotics projects
Compatible Boards / Circuits
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Arduino IDE for ESP8266
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Compatible with various sensors, relays, and displays
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Can be interfaced with Wemos shields and accessories
Reviews
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