ESP32-WROOM-32UE Dev Board Micro USB U.FL SMA

The ESP32-WROOM-32UE Development Board is built around Espressif’s latest generation ESP32-WROOM-32UE module revision of the classic WROOM external-antenna platform delivering enhanced security, improved RF performance, and reliable dual-core wireless computing in a breadboard-compatible form factor. The “UE” designation confirms this is the updated ECO V3 variant of the external-antenna WROOM series, featuring the ESP32-D0WD-V3 chip with hardware-enforced secure boot and flash encryption capabilities not available on the older 32U variant.

The defining hardware feature is the onboard U.FL / IPEX external antenna connector on the module itself — with a short SMA pigtail visible at the top of the board allowing any compatible 2.4GHz external antenna to be connected for dramatically improved WiFi and Bluetooth range over devices using an integrated PCB trace antenna. This makes the board particularly suited for installations inside metal enclosures, industrial environments, robotics platforms, and IoT gateways where antenna placement matters.

The board features a Micro USB port for programming and power, with EN (reset) and IO0 (boot) buttons clearly labelled on the black PCB for easy flashing. Dual-core Xtensa LX6 processing at up to 240MHz, 4MB SPI flash, 520KB SRAM, and full WiFi 802.11 b/g/n plus Bluetooth 4.2 Classic and BLE connectivity are onboard. All standard GPIO, ADC, DAC, SPI, I²C, UART, touch sensor, and PWM pins are accessible on the dual-row breadboard-compatible castellated and through-hole headers. Fully supported by Arduino IDE, ESP-IDF, MicroPython, and PlatformIO.

Specification:

• Module : ESP32-WROOM-32UE (ECO V3)
• Main Chip : ESP32-D0WD-V3
• CPU : Dual-core Xtensa LX6, up to 240MHz (adjustable 80/160/240MHz)
• ROM : 448KB
• SRAM : 520KB
• Flash Memory : 4MB SPI Flash
• WiFi : 2.4GHz 802.11 b/g/n, up to 150Mbps
• Bluetooth : BT 4.2 — Classic BR/EDR + BLE
• Antenna Connector : U.FL / IPEX on module (SMA pigtail on board)
• Security : ESP32 ECO V3 — enhanced secure boot + flash encryption
• USB Connector : Micro USB
• GPIO : 38 pins (castellated + through-hole, breadboard compatible)
• Analog Inputs : Up to 18 × 12-bit SAR ADC channels
• DAC : 2 × 8-bit DAC channels
• Digital Interfaces : SPI, I²C, UART, I²S, PWM, touch sensor (10 channels), Hall sensor
• Buttons : EN (reset) + IO0 (boot)
• Power Indicator : LED (onboard)
• Operating Voltage : 3.3V
• Input Voltage : 5V via Micro USB / via VIN pin
• Compatible Frameworks : Arduino IDE, ESP-IDF, MicroPython, PlatformIO, Lua
• Package Includes : 1 × ESP32-WROOM-32UE Development Board (Micro USB)