ESP32 ESP-WROOM-32 Wireless Module | 4MB Flash 32Mb PSRAM
ESP32 ESP-WROOM-32 Wireless Module | 4MB Flash 32Mb PSRAM
ESP32 ESP-WROOM-32 Wireless Module – Dual Antenna, 32Mb PSRAM & 4MB Flash
Supercharge your next IoT or embedded project with the ESP32 ESP-WROOM-32 Wireless Module. Featuring the powerful dual-core Espressif ESP32-S chipset, this compact module delivers reliable Wi-Fi and Bluetooth connectivity in a tiny footprint — perfect for prototyping, hobbyist builds, and production-ready designs alike.
Key Features
- Dual Wireless Connectivity: Built-in Wi-Fi (802.11 b/g/n) and Bluetooth 4.2/BLE for versatile communication options.
- 32 Mbits (4MB) PSRAM: Ample memory for data-intensive applications, graphics buffers, and complex firmware.
- 4MB SPI Flash: Store your program code and user data with plenty of room to spare.
- Dual Antenna Options: Choose between IPEX (external antenna connector) or onboard PCB antenna for flexible RF performance in any enclosure.
- Compact & Breadboard-Friendly: Standard pin pitch design makes prototyping fast and easy on any breadboard or custom PCB.
- Wide Compatibility: Works seamlessly with Arduino IDE, ESP-IDF, MicroPython, and other popular development frameworks.
- Low Power Modes: Multiple sleep modes for battery-powered and energy-conscious applications.
- General Purpose Use: Ideal for home automation, sensor nodes, wearable electronics, robotics, and more.
Technical Specifications
| Chipset | ESP32-S (Espressif) |
| Flash Memory | 4MB |
| PSRAM | 32 Mbits (4MB) |
| Wireless Standard | Wi-Fi 802.11 b/g/n + Bluetooth 4.2 / BLE |
| Antenna | IPEX connector & PCB onboard antenna |
| Operating Voltage | 3.3V |
| Country of Origin | Made in Mainland China |
What's in the Box
- 1 × ESP32 ESP-WROOM-32 Wireless Module (ESP32-S)
Great For
- IoT prototyping and smart home automation
- Sensor data collection and transmission
- Robotics and motor control projects
- Wearable and portable electronics
- Makers, students, and professional embedded developers
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Frequently Asked Questions
Q: What is the difference between the IPEX and PCB antenna options on this ESP32 module?
A: The onboard PCB antenna is integrated directly onto the module — no extra hardware needed and ideal for open-air or low-interference environments. The IPEX connector allows you to attach an external antenna for extended range or when the module is enclosed in a metal or shielded housing where the PCB antenna's performance may be reduced.
Q: Is this ESP32 ESP-WROOM-32 module compatible with the Arduino IDE?
A: Yes! The ESP32 ESP-WROOM-32 is fully compatible with the Arduino IDE using the official Espressif Arduino core. It also supports ESP-IDF, MicroPython, and PlatformIO, making it one of the most flexible and widely-supported wireless microcontroller modules available.
Q: How much memory does this ESP32 module have?
A: This module includes 4MB of SPI Flash for program storage and 32 Mbits (4MB) of PSRAM for additional RAM, making it well-suited for memory-intensive applications such as image processing, large data buffers, or complex web server implementations.
Q: Can I use this module for battery-powered projects?
A: Absolutely. The ESP32 chipset features multiple low-power sleep modes (light sleep, deep sleep, and modem sleep), enabling very low current draw when idle. This makes the ESP32 ESP-WROOM-32 an excellent choice for battery-operated IoT devices and remote sensor nodes.