38 Pin NodeMCU ESP32S Microcontroller Development Board

38 Pin NodeMCU ESP32S — Feature-Packed WiFi & Bluetooth Microcontroller

The 38 Pin NodeMCU ESP32S is a versatile, breadboard-friendly development board built on the powerful ESP32 dual-core processor. With 38 GPIO pins, built-in WiFi and Bluetooth, and a wide range of peripheral interfaces, this board is the go-to choice for IoT projects, wireless automation, and embedded prototyping.

Its wide 38-pin layout exposes virtually every capability of the ESP32 — giving you more I/O, more analog inputs, and more flexibility compared to narrower NodeMCU variants. Build smarter, connect faster.

Key Features

• ESP32 dual-core Tensilica LX6 at up to 240 MHz
• Built-in 802.11 b/g/n WiFi and Bluetooth 4.2 / BLE
• 38 GPIO pins — more I/O than standard 30-pin variants
• 4MB Flash memory
• 18 × 12-bit ADC channels, 2 × DAC, capacitive touch inputs
• Interfaces: UART, SPI, I2C, I2S, CAN, PWM
• Micro USB for programming and power
• On-board CP2102 USB-to-UART bridge for easy flashing
• 3.3V logic with on-board 3.3V LDO regulator
• Supports Arduino IDE, MicroPython, and ESP-IDF
• Deep sleep current as low as 10μA for battery applications

Ideal Applications

• WiFi and BLE IoT sensor nodes
• Home automation and smart device control
• Wireless data acquisition and logging
• Robotics and motor control projects
• Wearables and portable electronics