Espressif ESP32 WROOM 32U N4 Flash – WiFi & Bluetooth Module

The Espressif ESP32 WROOM 32U N4 Flash – WiFi & Bluetooth Module is a compact and versatile wireless module designed for IoT, automation, smart home, sensor, and embedded applications. Built around the ESP32 architecture, it provides dual-core processing that can help separate wireless communication tasks from application-level operations such as sensor readings, PWM control, and display updates. The espressif esp32 wroom configuration includes 4MB SPI flash, providing sufficient storage for firmware and application data. The flash space can also support common ESP32 firmware partition configurations, including OTA updates and file-system storage, depending on the selected partition scheme.

The espressif esp32 wroom 32u suffix identifies the version designed for an external U.FL/IPEX antenna connection. An external antenna can be useful in applications where improved wireless coverage or flexible antenna placement is required, such as enclosed equipment, industrial installations, and IoT devices. The module supports 2.4GHz WiFi and Bluetooth connectivity, including Bluetooth Classic and Bluetooth Low Energy (BLE), making it suitable for connected devices, wireless sensors, controllers, and communication projects. Bluetooth compatibility depends on the profile and features supported by the connected device.

With its 38-pin castellated package, the ESP32 WROOM 32U can be integrated into custom PCBs and development projects. Its available GPIOs provide interfaces and peripheral functions such as UART, SPI, I2C, PWM, ADC, and capacitive touch sensing, depending on the selected GPIO and its configuration. Available on StemVolt, the Espressif ESP32 WROOM 32U Module provides a practical combination of processing capability, wireless connectivity, external antenna support, and flash storage for a wide range of IoT and embedded applications.

Realted Products:

• Checkout 38 Pin ESP-32S Board Wifi + Bluetooth Type-C

Features:

• Castellated 38-pin footprint matches standard WROOM 32 PCB layouts
• 240MHz dual-core separates wireless stack from application execution
• 40MHz crystal provides stable timing for RF and CPU subsystems
• 4MB N4 flash supports OTA partitions and file system alongside firmware

Technical Specifications:

Applications:

• Espressif ESP32 WROOM 32U N4 embeds into custom IoT project builds
• ESP32 WROOM 32U Module runs OTA firmware update server from 4MB flash partition
• A routes I2C and SPI sensors into compact wireless data logger builds
• Espressif ESP32 Module suits multi-unit field sensor network deployment across large installations
• The esp32 wroom Module handles MQTT client publish sensor readings to cloud IoT platforms

Package Includes:

• 1 x Espressif ESP32 WROOM 32U N4 Flash – WiFi & Bluetooth Module