NodeMCU ESP8266 WiFi Development Board (CP2102 USB-TTL)
The NodeMCU ESP8266 (CP2102) is one of India's most popular and affordable WiFi-enabled microcontroller development boards, trusted by engineering students, IoT hobbyists, and prototyping professionals alike. Built around the ESP8266MOD (ESP-12E) module — a 32-bit Tensilica L106 RISC processor clocked at 80 MHz with 4 MB of flash memory — this board brings reliable 2.4 GHz WiFi connectivity (802.11 b/g/n) to your projects out of the box, no external shields required. What sets this particular variant apart is the onboard CP2102 USB-to-UART bridge chip from Silicon Labs. Compared to CH340-based NodeMCU boards that can require manual driver downloads and may face compatibility issues on newer operating systems, the CP2102 offers broader out-of-the-box driver support — especially on Windows 10/11 where drivers often install automatically via Windows Update, and on Linux where the cp210x kernel module is included by default. For most users this means less time troubleshooting and more time coding. The board features a Micro USB port for power and programming, an onboard 3.3V regulator that accepts 5V via USB or 7-9V DC via the Vin pin (prolonged use above 9V may cause regulator overheating — always check the regulator temperature during extended operation), a built-in PCB antenna, and a reset + flash button combination that makes firmware flashing a one-button affair. All GPIOs are broken out to 2.54 mm pitch headers, making it breadboard-friendly and easy to interface with sensors, relays, displays, and actuators. Whether you are building a home automation system, a weather station that pushes data to the cloud, a WiFi-controlled robot, or simply learning embedded IoT programming for your college minor/major project — this board is the ideal starting point. It is fully compatible with the Arduino IDE (via the ESP8266 Arduino Core), PlatformIO, MicroPython, Lua (NodeMCU firmware), and Espressif's RTOS SDK / Non-OS SDK, giving you the flexibility to work in the environment you prefer. At a price point of around ₹250, the NodeMCU ESP8266 CP2102 delivers exceptional value — an entire WiFi-enabled microcontroller platform for less than the cost of a Bluetooth module alone. It is the board that powers thousands of Indian engineering projects every semester, and it belongs on every maker's workbench.
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₹283.00
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Category
Microcontroller & Dev Boards
Quality
100% Genuine
About NodeMCU ESP8266 WiFi Development Board (CP2102 USB-TTL)
Technical Specifications
| ADC | 1x 10-bit (0-1V input range) |
|---|---|
| I2C | 1 (default: GPIO5-SCL, GPIO4-SDA) |
| SPI | 1 (default: GPIO14-CLK, GPIO12-MISO, GPIO13-MOSI) |
| SRAM | 64 KB Instruction + 96 KB Data |
| UART | 1x Hardware (GPIO1-TX, GPIO3-RX) |
| Weight | ~8 grams |
| GPIO Pins | 17 (multi-function: I2C, SPI, UART, PWM, ADC) |
| Clock Speed | 80 MHz (overclockable to 160 MHz) |
| Flash Memory | 4 MB SPI Flash |
| USB Connector | Micro USB (data + power) |
| WiFi Standard | 802.11 b/g/n (2.4 GHz), WPA/WPA2 |
| PCB Dimensions | Approx. 49 x 24 x 8 mm |
| Microcontroller | ESP8266MOD (ESP-12E/12F), Tensilica L106 32-bit RISC |
| Operating Voltage | 3.3V logic | 5V USB or 7-9V recommended on Vin |
| Deep Sleep Current | ~20 µA (with proper configuration) |
| USB-to-Serial Chip | CP2102 (Silicon Labs) |
| Programming Support | Arduino IDE, PlatformIO, MicroPython, Lua, RTOS/Non-OS SDK |
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