The NodeMCU ESP8266 Development Board (CP2102) is a versatile, open-source Wi-Fi microcontroller platform designed for Internet of Things (IoT) hardware, smart home sensors, and wireless control… 3.3V DC logic level · 5V DC via Micro-USB or 4.5V to 10V DC via V_IN pin.
The NodeMCU ESP8266 Development Board (CP2102) is a versatile, open-source Wi-Fi microcontroller platform designed for Internet of Things (IoT) hardware, smart home sensors, and wireless control applications. Built around the ESP-12E module housing Espressif's 32-bit Tensilica Xtensa LX106 RISC CPU running at 80 MHz (up to 160 MHz), it delivers complete 802.11b/g/n Wi-Fi networking with integrated TCP/IP stack.
Unlike cheaper CH340 variants, this version features a Silicon Labs CP2102 USB-to-TTL serial converter IC, offering plug-and-play driver installation on Windows, macOS, and Linux, alongside superior upload stability and auto-reset circuitry for hassle-free flashing from the Arduino IDE, NodeMCU (Lua), or MicroPython environments.
The board features 11 Digital I/O pins (all supporting PWM, I2C, SPI, and OneWire), 1 Analog Input (0V - 3.3V max input range via internal voltage divider), and 4MB (32Mbit) of SPI flash memory for firmware scripts, web server hosting, and Over-The-Air (OTA) updates. It breaks out logic-level lines into a breadboard-friendly 0.9" (22.86mm) pin-pitch Amica form factor with dual onboard 3.3V LDO regulators accepting power through Micro-USB or external 5V-10V DC power supplied to the V_IN pin.
| Core Chipset | Espressif ESP8266EX Tensilica Xtensa 32-bit LX106 RISC CPU @ 80 MHz / 160 MHz |
|---|---|
| USB-to-Serial Converter | Genuine Silicon Labs CP2102 USB-to-UART Bridge IC (Micro-USB port) |
| Onboard Memory | 4MB (32Mbit) SPI Flash Memory + 80KB User SRAM |
| Wireless Protocol | 2.4 GHz Wi-Fi (802.11b/g/n, SoftAP, Station, and SoftAP + Station modes) |
| Operating Voltage | 3.3V DC logic level |
| Input Supply Voltage | 5V DC via Micro-USB or 4.5V to 10V DC via V_IN pin |
| Digital I/O Pins | 11 GPIO pins (D0 - D10), supporting Interrupt, PWM, I2C, SPI, and 1-Wire |
| Analog Input Channel | 1 ADC Pin (A0, 10-bit resolution, 0V-3.3V max range) |
| Form Factor | Narrow 0.9" breadboard-compatible Amica footprint (49mm × 26mm) |
| Software Compatibility | Arduino IDE, ESP8266 Core, NodeMCU Lua, MicroPython, and ESP-IDF |
| Onboard Controls | Flash & Reset push buttons with ON and GPIO16 (D0) user status LEDs |
What is the operating voltage?
3.3V DC logic level.
Which interface does it use?
2.4 GHz Wi-Fi (802.11b/g/n, SoftAP, Station, and SoftAP + Station modes).
Is it compatible with Arduino and ESP8266?
Yes. It works with Arduino, ESP8266, NodeMCU projects.
Can I buy the NodeMCU ESP8266 development Board in Kanpur?
Yes – buy online with delivery across India, or pick it up from the iTechBuilders store, Damodar Nagar, Kanpur.
