Wemos MINI D1 ESP32 Wroom (Based on ESP-WROOM-32, WiFi and Bluetooth 4.0)

The Wemos Mini D1 ESP32 development board features the powerful Espressif ESP-WROOM-32 module in a compact form factor compatible with the vast D1 mini ecosystem. It provides full wireless connectivity via WiFi 802.11 b/g/n (2.4 GHz) and Bluetooth 4.2 (BLE), making it ideal for IoT projects.

Powered by an ESP32 microcontroller running at 240 MHz with 4 MB of flash memory, the board includes a CH340C USB-to-UART interface for easy programming and debugging. It offers multiple GPIO pins supporting PWM, ADC, DAC, I²C, SPI, and UART, along with an integrated PCB antenna for reliable RF performance.

Specifications

• Microcontroller: ESP32 (Xtensa architecture)
• CPU Frequency: 240 MHz
• Flash Memory: 4 MB
• Connectivity: WiFi 802.11 b/g/n, Bluetooth 4.2 (BLE + BR/EDR)
• Digital I/O: 34 available pins
• Analog Inputs: 18 ADC channels
• USB Interface: Micro-USB with CH340C converter
• Operating Voltage: 5V DC (via USB/VIN) or regulated 3.3V
• Dimensions: 34 × 25 mm
• Weight: approx. 12 g