Espressif ESP32-WROOM-32E-N8 Wi-Fi & BLE Module

The ESP32-WROOM-32E is based on the newer ESP32-S3 SoC, which features a dual-core Xtensa LX7 processor with enhanced AI acceleration instructions and improved peripheral sets like USB OTG. It offers better performance for machine learning tasks and more flexible I/O compared to the original ESP32-D0WD-based WROOM-32 modules, while maintaining the same compact form factor and integrated PCB antenna.

You can program the module using the official Espressif IoT Development Framework (ESP-IDF) via a USB-to-serial adapter connected to its UART pins. It is also widely supported in the Arduino IDE with the ESP32 board package and in PlatformIO. The development process involves writing code in C/C++ or MicroPython, compiling it, and flashing it over the serial connection. Ensure your power supply provides a stable 3.3V during programming and operation.

No, the ESP32-WROOM-32E-N8 variant is specifically designed with a fixed, integrated PCB antenna and does not have an external antenna connector like an IPEX or SMA. For projects requiring an external antenna for directional gain or specific placement, you would need to select a different module variant from Espressif, such as the ESP32-WROOM-32UE, which includes an external antenna connector alongside the PCB antenna option.

Power consumption varies significantly: In active mode with Wi-Fi/Bluetooth radio on, expect currents around 80-240 mA depending on transmit power. In Deep Sleep mode, with the RTC and memory retained, consumption drops to microamp levels (typically 10-150 µA), making it ideal for battery-powered sensors that wake periodically. You must manage sleep modes programmatically via ESP-IDF or Arduino libraries to achieve optimal battery life in your application.