ESP32 38PIN Expansion Board is a powerful and versatile development platform designed for engineers, hobbyists, students, and IoT enthusiasts who require a reliable and feature-rich solution for building smart electronics. Powered by the advanced ESP32-WROOM WiFi + Bluetooth module, this expansion board offers exceptional performance, wide connectivity, and a flexible pinout ideal for rapid prototyping and professional product development.

Optimized for IoT automation, robotics, smart home devices, sensor networks, wearables, and industrial control, the ESP32 38PIN Expansion Board provides all essential interfaces to bring ideas to life. With rich GPIO options, USB-to-serial programming interface, power management circuitry, and plug-and-play compatibility, this board allows you to develop embedded systems faster and more efficiently.

If you’re looking for a high-quality ESP32 development board that enhances stability, facilitates external connections, and simplifies programming, the ESP32 38PIN Expansion Board is the perfect choice.

Key Features of ESP32 38PIN Expansion Board

1. Powerful Dual-Core Processor

Equipped with the robust ESP32 dual-core LX6 microcontroller, the board delivers high speed, excellent multitasking capability, and low power consumption, suitable for real-time applications and advanced IoT projects.

2. Built-In WiFi and Bluetooth

Integrated 2.4 GHz WiFi (802.11 b/g/n) and Bluetooth 4.2 + BLE, enabling seamless wireless communication, cloud integration, and remote control of connected devices.

3. 38-Pin Extended GPIO Interface

The expanded pin configuration provides:

• Multiple GPIOs

• ADC (Analog-to-Digital Converters)

• DAC (Digital-to-Analog Converters)

• I2C, SPI, UART communication interfaces
  These allow you to connect sensors, actuators, displays, modules, and external circuits effortlessly.

4. Onboard USB-to-Serial Converter

Includes a stable CP2102 / CH340 USB interface (depending on model) for easy programming and debugging through the Arduino IDE, ESP-IDF, MicroPython, and other platforms.

5. Reliable Power Management

Supports:

• 5V USB power input

• 3.3V output for sensors
  Integrated regulators ensure stable power delivery during WiFi/Bluetooth transmission.

6. Compact & Durable Design

Designed with a compact layout, quality PCB, and durable pin headers to ensure long-term reliability and easy breadboard or perfboard mounting.

7. Wide Software Support

Compatible with:

• Arduino IDE

• ESP-IDF

• MicroPython

• PlatformIO

• Lua NodeMCU
  This gives developers full control and flexibility for coding, debugging, and deploying projects.

Specifications

• Microcontroller: Tensilica LX6 Dual-Core (ESP32-WROOM Module)

• Operating Voltage: 3.3V

• Input Voltage: 5V via USB

• Wireless Connectivity: WiFi 802.11 b/g/n, Bluetooth 4.2 & BLE

• Flash Memory: 4MB (varies by version)

• Number of Pins: 38 total

• GPIO Pins: Multiple, configurable

• ADC Channels: 12-bit ADC

• DAC Channels: 2 × 8-bit DAC

• Interfaces: UART, SPI, I2C, PWM, I2S

• USB Interface: CP2102 or CH340

• Operating Temperature: –40°C to +85°C

• Dimensions: Compact 38-pin form factor

• Programming Support: Arduino, ESP-IDF, MicroPython, PlatformIO

Applications of ESP32 38PIN Expansion Board

1. IoT and Smart Home Automation

Ideal for building WiFi-enabled devices such as smart switches, thermostats, door sensors, home security systems, and cloud-connected appliances.

2. Robotics & Automation

Use it for motor control, sensor integration, robotic arms, drones, and autonomous systems requiring wireless control and real-time processing.

3. Industrial Monitoring

Perfect for designing industrial IoT solutions, including temperature monitoring, predictive maintenance, and data acquisition systems.

4. Wearables & Health Devices

Low power consumption and Bluetooth capability make it suitable for wearable gadgets, fitness trackers, health monitors, and BLE-based devices.

5. Educational Projects & Prototyping

Great for engineering students, makers, and electronics learners to build embedded systems, IoT experiments, and research prototypes.

6. Wireless Sensor Networks

Can be used for long-range networked sensors, environmental monitoring, agricultural IoT, weather stations, and distributed data logging.

Why Choose the ESP32 38PIN Expansion Board?

This board is an excellent platform for anyone looking to work with the ESP32 while enjoying extended pin compatibility, stable USB programming, and strong wireless performance. Whether you’re developing a commercial IoT product, experimenting in the lab, or building a hobby project, the ESP32 38PIN Expansion Board provides unmatched value, connectivity, and flexibility.