Overview
The ESP32 NodeMCU (38-Pin version) is a powerful, feature-rich development board that serves as the successor to the famous ESP8266. Built around the ESP-WROOM-32 module, it features a dual-core Xtensa® 32-bit LX6 microprocessor. Whether you need integrated WiFi for cloud logging or Bluetooth/BLE for mobile app control, this board does it all. The 38-pin layout ensures you aren’t “pin-starved” when connecting multiple sensors, displays, and actuators to a single project.
Key Features
38-Pin Expanded Layout: Access more GPIOs, including extra SPI and UART pins not found on the standard 30-pin boards.
Dual-Core Processing: One core can handle WiFi/Bluetooth stacks while the other runs your heavy code—no more lag!
High-Speed CH9102X Driver: A superior USB-to-TTL chip that provides better compatibility with modern operating systems and higher baud rates.
Hybrid Connectivity: Supports both WiFi (802.11 b/g/n) and Dual-mode Bluetooth (Classic + BLE).
Massive Peripheral Support: Capacitive touch sensors, Hall sensors, low-noise receive amps, SD card interface, Ethernet, high-speed SPI, UART, I2S, and I2C.
Technical Specifications
| Feature | Specification |
| Microcontroller | ESP-WROOM-32 (Dual Core) |
| USB Driver IC | CH9102X (High Speed) |
| Pins | 38 Pins (Breadboard Friendly) |
| Flash Memory | 4 MB |
| Clock Speed | 240 MHz |
| Operating Voltage | 3.3V (5V via Micro-USB) |
| SRAM | 520 KB |
| Wireless | WiFi 2.4GHz + BT 4.2 / BLE |
| Antenna | On-board PCB Antenna |
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