This is the ESP32S-DEV development board based on ESP-WROOM-32, features WiFi + Bluetooth connectivity, onboard USB CH340 and keys. What’s more, all the I/O pins of ESP-WROOM-32 module are accessible via the extension headers. The board has 2×15 pin extension headers, which breakout all the I/O pins of the module and 2x keys, used as reset or user-defined.
Specification of ESP-WROOM-32 Development Board:
Microcontroller: ESP32-WROOM32 (dual-core) 32-bit
CPU Frequency: Up to 240 MHz
Flash Memory: 4 MB (32Mbit) SPI Flash
ROM : 448 KB
SRAM: 520 KB (16 KB SRAM in RTC)
Wi-Fi: 802.11 b/g/n
Bluetooth: Bluetooth 4.2 BR/EDR and BLE
PCB Antenna
Digital I/O Pins: 38
Analog Input Pins: 18
Interfaces : UART, SPI, I2C, PWM, ADC, DAC
USB-to-Serial Chip: CH340
Operating Voltage: 3.3V
USB Type-C connector
Powered via USB Type-C Connector, or via pin header
Reset and User/Firmware buttons
User and Power LED