NodeMCU ESP8266 WiFi Development Board – 30-Pin Compact Design (22.5mm Width) for IoT Projects

SKU: FA2063-2
Microcontroller

Tensilica 32-bit L106 (ESP8266EX)
Operating Voltage

3.3V
Input Voltage (USB)

5V DC
Input Voltage (VIN)

4.5V – 9V DC
Flash Memory

4MB (32M-bit)
Clock Speed

80 MHz (can be boosted to 160 MHz)
Board Width

22.5mm (Slim Profile)
Wi-Fi Protocol

802.11 b/g/n (2.4 GHz)
Interface Port

Micro-USB (Standard) / USB-C (Optional Rev.)
GPIO Pins

11 Digital (all support PWM/I2C/SPI), 1 Analog (ADC)
Dimensions

48mm x 22.5mm
Product Overview
The NodeMCU ESP8266 30-Pin Compact Edition is a specialized, space-saving version of the popular Wi-Fi development board. With a refined 22.5mm width, this board is engineered specifically for developers who require a breadboard-friendly footprint without sacrificing the power of the ESP8266EX microcontroller.
Unlike wider “V3” versions that occupy almost an entire breadboard, this compact model leaves one row of tie-points open on either side, significantly simplifying the wiring of sensors and actuators. It serves as an industrial-grade bridge for IoT (Internet of Things) applications, providing robust Wi-Fi connectivity, integrated power management, and a high-speed USB-to-Serial interface in a sleek, professional form factor.
Key Features
  • Breadboard Optimized: The ultra-slim 22.5mm width ensures it fits perfectly into standard breadboards while leaving external pins accessible.
  • High-Performance Wireless: Powered by the ESP-12E/F module with an integrated PCB antenna, supporting 802.11 b/g/n Wi-Fi and WPA/WPA2 security.
  • Seamless Programming: Features an onboard CP2102 or CH9102X USB-to-UART bridge (High-Stability variants) for reliable data transfer and automatic “Flash” mode.
  • Versatile Power Management: Integrated 3.3V LDO regulator allows the board to be powered via the USB port or the VIN pin (up to 9V).
  • Open-Source Flexibility: Fully compatible with Arduino IDE (C++), MicroPython, CircuitPython, and Lua, backed by a massive global developer community.
  • Industrial-Ready Pins: Standard 0.1″ (2.54mm) pitch 30-pin layout provides access to PWM, I2C, SPI, UART, and 1-Wire interfaces.
Usage & Applications
  1. Compact IoT Nodes: Perfect for small-scale smart home devices like Wi-Fi-connected light switches or motion sensors.
  2. Breadboard Prototyping: Ideal for educational labs and R&D environments where multiple sensors need to be connected on a single breadboard.
  3. Industrial Data Logging: Deployable as a remote sensor bridge that transmits local machine data (temperature, humidity, vibration) to a cloud database via MQTT.
  4. Wireless Gateways: Acts as a central hub to collect data from Bluetooth or LoRa modules and upload it to a Wi-Fi network
Q: What is the main benefit of the 22.5mm width vs. the standard 30mm width?

The 22.5mm width is “breadboard-friendly.” Standard boards often cover all the holes on a breadboard, making it impossible to plug in wires. This slim version leaves one row of holes free on each side, allowing for much faster and cleaner prototyping

Q: Can I use this board for battery-powered applications?

A: Yes. The ESP8266 features a “Deep Sleep” mode that consumes less than 20µA. By connecting the RST and D0 (GPIO16) pins, the board can wake itself up at set intervals to send data and return to sleep, significantly extending battery life

Q: Which driver do I need for my computer to recognize the board?

Depending on the specific serial chip used (CP2102 or CH9102X), you may need to install a driver. Most modern Windows 10/11 and macOS systems will recognize it automatically

Q: Does this board support 5V logic?

No. The ESP8266 is a 3.3V device. While the VIN pin can accept 5V-9V for power, the GPIO pins are only rated for 3.3V. Using 5V sensors requires a logic-level shifter to prevent damage.

Q: Is this board suitable for business/commercial bulk purchasing?

Absolutely. Its standard 30-pin footprint and stable Wi-Fi performance make it a reliable choice for small-batch commercial production and industrial monitoring solutions

Q: Can I program this using Python?

Yes. This board fully supports MicroPython. You can flash the MicroPython firmware onto the board and write your scripts using editors like Thonny or VS Code.

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