The ESP32 38-Pin Wi-Fi + Bluetooth NodeMCU Development Board is a versatile microcontroller development platform for IoT, wireless electronics, automation, robotics and embedded-system projects.
Built around the ESP-WROOM-32 platform, it combines a dual-core 32-bit Xtensa LX6 processor with integrated 2.4GHz Wi-Fi and Bluetooth connectivity. The ESP32 platform supports a wide range of peripherals including GPIO, ADC, DAC, PWM, UART, SPI, I²C, I²S and capacitive touch functionality, providing flexibility for connecting sensors, displays, actuators and other electronic modules.
The 38-pin development-board layout exposes a broad selection of ESP32 interfaces for prototyping. It is compatible with the Arduino IDE, making it accessible for students, makers and developers working on embedded and IoT projects.
With built-in wireless connectivity and multiple peripheral interfaces, the board can be used for applications ranging from wireless sensor systems and data logging to home automation, connected devices and robotics prototypes.
Detailed Product Attributes
- Board Type: ESP32 Development Board
- Module: ESP-WROOM-32
- Processor: Xtensa Dual-Core 32-bit LX6
- Maximum Clock Frequency: Up to 240MHz
- Wi-Fi: 2.4GHz IEEE 802.11 b/g/n
- Bluetooth: Bluetooth 4.2 BR/EDR + BLE
- Flash Memory: 4MB
- SRAM: 520KB
- Header Layout: 38-Pin
- ADC: Supported
- DAC: Supported
- PWM: Supported
- UART: Supported
- SPI: Supported
- I²C: Supported
- I²S: Supported
- Capacitive Touch: Supported
- USB: USB-to-Serial interface
- Operating Supply: 2.2–3.6V as listed for the board
- Dimensions: Approx. 5 × 4 × 3cm
- Weight: Approx. 15g
- Package Quantity: 1 Board
Technical Specifications
| Specification | Details |
|---|---|
| Microcontroller Platform | ESP32 / ESP-WROOM-32 |
| Processor | Xtensa Dual-Core 32-bit LX6 |
| Maximum Clock Speed | Up to 240MHz |
| SRAM | 520KB |
| Flash Memory | 4MB |
| Wi-Fi | IEEE 802.11 b/g/n, 2.4GHz |
| Bluetooth | Bluetooth 4.2 BR/EDR + BLE |
| Development Board Layout | 38-Pin |
| ADC | Supported |
| DAC | Supported |
| PWM | Supported |
| UART | Supported |
| SPI | Supported |
| I²C | Supported |
| I²S | Supported |
| Capacitive Touch | Supported |
| USB Interface | USB-to-Serial |
| Supply Voltage | 2.2–3.6V |
| Dimensions | Approx. 5 × 4 × 3cm |
| Weight | Approx. 15g |
| Quantity | 1 Board |
Technical Specification Pointer
ESP-WROOM-32 based 38-pin ESP32 development board with dual-core 240MHz processing, 520KB SRAM, 4MB Flash, 2.4GHz Wi-Fi, Bluetooth 4.2 + BLE and multiple digital/analog peripheral interfaces.
Key Features
- Dual-Core ESP32 Platform: Xtensa LX6 dual-core processor with operation up to 240MHz.
- Built-In Wi-Fi: Integrated 2.4GHz IEEE 802.11 b/g/n connectivity.
- Bluetooth + BLE: Supports Bluetooth Classic and Bluetooth Low Energy applications.
- 4MB Flash: Provides onboard storage for firmware and application data.
- 520KB SRAM: Provides memory for embedded applications and connected-device tasks.
- 38-Pin Layout: Provides access to a broad selection of ESP32 interfaces.
- Multiple Peripheral Interfaces: Supports ADC, DAC, PWM, UART, SPI, I²C and I²S.
- Arduino IDE Compatible: Suitable for Arduino-based ESP32 programming and prototyping.
- Wireless Development Platform: Suitable for connected sensors, automation systems and IoT prototypes.
Recommended Applications
- IoT development
- Wireless sensor networks
- Home automation
- Smart monitoring systems
- Environmental data logging
- Bluetooth-enabled electronics
- Wi-Fi-enabled projects
- Robotics and automation
- Connected displays
- Remote-control projects
- Embedded electronics
- DIY electronics
Educational Applications
Suitable for learning and experimenting with:
- ESP32 programming
- Arduino IDE programming
- Wi-Fi communication
- Bluetooth and BLE communication
- IoT fundamentals
- GPIO and peripheral control
- Sensor data collection
- Wireless data transmission
- Embedded systems
- Microcontroller-based automation
Project Possibilities
- Wi-Fi-enabled environmental monitoring
- Wireless sensor node
- Smart home prototype
- Bluetooth-controlled electronics
- IoT data logger
- Wireless automation system
- Connected display project
- Remote monitoring device
- Robotics controller
- Smart agriculture monitoring prototype
Compatibility Notes
- The ESP32 platform operates with 3.3V logic. External components must be connected according to their electrical requirements.
- The 38-pin header provides access to multiple ESP32 functions, but not every exposed pin is interchangeable for every purpose.
- Individual GPIO functions and restrictions should be considered when designing circuits.
- The board can be programmed using the Arduino IDE and other ESP32-supported development environments.
- The USB-to-serial interface is used for programming and serial communication.
What’s Included
- 1 × ESP32 38-Pin Wi-Fi + Bluetooth NodeMCU Development Board
Important Notes
- This is a Generic ESP32 development board based on the ESP-WROOM-32 platform.
- Do not apply 5V directly to ESP32 GPIO pins.
- Do not exceed the applicable electrical limits of the ESP32 or individual GPIO pins.
- Wireless performance depends on the surrounding environment, antenna conditions, software and connected devices.
- Pin functions can vary by board configuration; use the appropriate pinout when connecting external components.
- The board’s stated supply voltage is 2.2–3.6V; use an appropriate power source.
Product Summary
The ESP32 38-Pin Wi-Fi & Bluetooth NodeMCU Development Board combines dual-core ESP32 processing, 4MB Flash, 520KB SRAM, 2.4GHz Wi-Fi, Bluetooth 4.2 and BLE with a broad 38-pin development-board layout. With ADC, DAC, PWM, UART, SPI, I²C, I²S and capacitive-touch capabilities, it provides a flexible platform for IoT, wireless electronics, automation, robotics and STEM projects.
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