ESP32 WROOM DEVKIT V1 30 Pins
The ESP32 WROOM DEVKIT V1 30 Pins is a powerful, low-cost microcontroller with integrated WiFi and Bluetooth. It features a dual-core processor, making it ideal for IoT projects, wearable electronics, and smart home applications.
Key Features
- Dual-core Xtensa LX6 32-bit processor up to 240MHz
- Built-in WiFi 802.11 b/g/n for wireless connectivity
- Bluetooth 4.2/BLE support for wireless peripherals
- 30+ programmable GPIO pins with multiple functions
- Ultra-low power modes for battery-operated devices
- 4MB flash memory for program and data storage
- Rich peripheral interfaces including SPI, I2C, UART, ADC, DAC, PWM
Technical Specifications
| Parameter |
Specification |
| Processor |
Xtensa dual-core 32-bit LX6 |
| Clock Speed |
Up to 240 MHz |
| Operating Voltage |
3.3V |
| Input Voltage (USB) |
5V |
| WiFi |
802.11 b/g/n |
| Bluetooth |
v4.2 + BLE |
| Flash Memory |
4 MB |
| SRAM |
520 KB |
| GPIO Pins |
30+ |
| ADC Channels |
18 (12-bit) |
| DAC Channels |
2 (8-bit) |
| UART Ports |
3 |
| SPI Interfaces |
4 |
| I2C Interfaces |
2 |
Applications
- IoT applications with WiFi cloud connectivity
- Smart home devices and automation hubs
- Wearable electronics with Bluetooth LE
- WiFi-enabled sensors and data loggers
- Bluetooth controllers and wireless peripherals
- Web server projects with built-in HTTP support
- Real-time monitoring with dual-core processing
Pinout
- VIN: 5V input (regulated to 3.3V)
- 3.3V: Regulated 3.3V output (max 500mA)
- GND: Ground pins
- GPIO: General purpose I/O (3.3V logic)
- TX/RX: UART serial communication
- SCL/SDA: I2C bus pins
- MOSI/MISO/SCK: SPI interface
Important Notes
- GPIO pins use 3.3V logic – use level shifters for 5V devices
- Install ESP32 board package in Arduino IDE before use
- Supports MicroPython, ESP-IDF, and Arduino frameworks
- Some pins have special functions during boot – check pinout diagrams
- Built-in Hall effect sensor and temperature sensor available
