The ESP8266 NodeMCU, also known as ESP8266 Wi‑Fi Development Board, is a versatile single‑board microcontroller based on the ESP‑12E/F module. It features built‑in Wi‑Fi (802.11 b/g/n), USB‑UART interface (typically CH340 or CP2102), and a breadboard‑friendly form factor. Powered by the ESP8266 SoC, it offers ~4 MB flash and 10+ GPIO pins. Perfect for IoT, home automation, data logging, and wireless sensor applications. Supports programming via Arduino IDE, MicroPython, and Lua.
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