ESP32 WROOM Development Board WiFi + Bluetooth – 30 Pin

The ESP32 WROOM Development Board is a 30-pin WiFi and Bluetooth microcontroller board built on the ESP32 WROOM 32 module with integrated 802.11 b/g/n WiFi at 2.4GHz and Bluetooth 4.2. The esp32 30 pin board carries 4MB flash, operates at 3.3V logic, and exposes 30 GPIO pins supporting UART, SPI, I2C, and I2S communication interfaces. This makes the esp32 wroom 30 pin layout the most breadboard-compatible ESP32 form factor — the narrower 30-pin board width leaves usable component rails on both sides of a standard 830-point breadboard, unlike the wider 38-pin variant which spans nearly the full board width.

The esp32 wifi bluetooth board programs via the onboard USB connector using the Arduino IDE with ESP32 board package, MicroPython, or ESP-IDF. WiFi and Bluetooth 4.2 both operate concurrently — the ESP32 dual-core processor assigns the wireless stack to one core and the user sketch to the other, preventing radio activity from blocking sensor reading or output control timing. One practical trade-off: unlike the 38-pin ESP32 variant, the 30-pin layout omits GPIO34, GPIO35, GPIO36, and GPIO39 — the input-only ADC pins. Projects needing more than the standard analog input channels will need the 38-pin board or an external ADC module.

The non-obvious advantage of the ESP32 WROOM 32 module over bare ESP32 chip designs is the integrated antenna — the module includes a tuned PCB trace antenna tested and certified by Espressif, giving consistent WiFi range without any antenna design work required. The esp32 development board is widely used in Indian engineering labs for home automation, cloud sensor dashboards, and BLE peripheral builds. Available from StemVolt, this unit is suitable for engineers working on WiFi Bluetooth IoT applications and practical embedded electronics projects.

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Features:

• ESP32 WROOM 32 module with certified tuned PCB antenna onboard
• 30-pin narrow layout fits breadboard with component rail space on both sides
• WiFi 802.11 b/g/n and Bluetooth 4.2 both active simultaneously from one chip
• UART SPI I2C I2S support covers all sensor and display peripherals
• 4MB flash stores complete firmware with OTA and file system partition

Pin Diagram of ESP32 30pins:

Technical Specifications:

 Applications:

• ESP32 WROOM Development Board used for WiFi cloud sensor dashboard project
• College IoT lab uses esp32 30 pin board for BLE beacon demo
• Home automation uses esp32 wifi bluetooth board for smart relay switching
• Breadboard prototype uses esp32 wroom 30 pin for clean sensor wiring build
• OTA firmware update system uses esp32 development board for wireless deploy

Package Includes:

• 1 × ESP32 WROOM Development Board