The ADIY NodeMCU ESP32U CP2102 is a powerful ESP32-based Wi-Fi and Bluetooth development board designed for applications that require enhanced wireless range and signal reliability. Unlike standard ESP32 boards with onboard PCB antennas, the ESP32U variant features a U.FL connector, allowing connection to an external antenna for improved RF performance.

Built around the ESP32 microcontroller, the board supports dual-mode wireless connectivity, including Wi-Fi 802.11 b/g/n and Bluetooth v4.2 (BR/EDR + BLE). The 30-pin compact NodeMCU layout exposes most of the essential GPIOs and interfaces, enabling easy integration into embedded systems and custom hardware.

With a CP2102 USB-to-UART bridge, programming and debugging are simple and reliable. The board is well suited for IoT gateways, smart devices, industrial automation, and long-range wireless projects, especially where antenna flexibility is critical.

Key Features

• ESP32 dual-core Wi-Fi + Bluetooth + BLE SoC

• External antenna support via U.FL connector

• CP2102 USB-to-UART interface for easy programming

• 30-pin NodeMCU form factor

• Dual wireless modes: Wi-Fi & Bluetooth

• Low power consumption design

• Wide operating temperature range

• Supports Arduino IDE, ESP-IDF & Lua scripting

• Ideal for long-range and industrial IoT applications

Technical Specifications

• Operating Voltage: 3.0 V – 3.6 V (Typical 3.3 V)

• Average Operating Current: 80 mA

• Antenna: External antenna via U.FL connector

• Wi-Fi Protocol: 802.11 b/g/n (802.11n up to 150 Mbps)

• Bluetooth: v4.2 BR/EDR & BLE

• ROM: 448 KB

• SRAM: 520 KB

• Crystal Oscillator: 40 MHz

• SPI Flash: 4 MB / 8 MB / 16 MB

• Operating Temperature: –40 °C to +85 °C

Supported Interfaces:
SD card, UART, SPI, SDIO, I2C, LED PWM, Motor PWM, I2S, IR, Pulse Counter, GPIO, Capacitive Touch Sensor, ADC, DAC, TWAI® (CAN 2.0, ISO11898-1 compatible)

Applications

• IoT gateways & smart home hubs

• Long-range Wi-Fi / Bluetooth projects

• Industrial automation & control systems

• Wireless sensor networks

• Robotics and motor control

• CAN-based embedded systems

• DIY electronics & prototyping

Package Includes

• 1 × ADIY NodeMCU ESP32U CP2102 Development Board
  (External antenna not included unless specified)