The ESP8266 NodeMCU is a low-cost, open-source microcontroller board based on the ESP8266 Wi-Fi SoC (System on Chip) developed by Espressif Systems. It is widely used in IoT (Internet of Things) applications due to its built-in Wi-Fi capability and ease of programming using the Arduino IDE or Lua scripting language.
🔧 Key Features:
-
Microcontroller: ESP8266 (specifically, the ESP-12E or ESP-12F module)
-
Clock Speed: 80 MHz (can be overclocked to 160 MHz)
-
Operating Voltage: 3.3V (inputs are not 5V tolerant)
-
Flash Memory: 4 MB (varies with model)
-
GPIO Pins: 11 digital I/O pins (some with PWM/I2C/SPI capabilities)
-
Analog Input: 1 ADC input (0–1V range)
-
USB to Serial: Built-in USB interface for easy programming via micro USB
📡 Connectivity:
-
Wi-Fi: 802.11 b/g/n
-
Supports STA (Station), AP (Access Point), and STA+AP modes
💡 Why it’s Popular:
-
Low cost
-
Wi-Fi built-in, perfect for IoT
-
Compatible with Arduino IDE
-
Extensive community support and libraries
🔌 Typical Applications:
-
Smart home devices (like smart lights or thermostats)
-
Weather stations
-
Remote sensor monitoring
-
Wireless data logging
-
Automation projects
Reviews
Clear filtersThere are no reviews yet.