D1 Mini (Wemos ESP8266, Arduino-compatible layout, wifi, 80/160Mhz, 4Mb flash)

The WeMos D1 Mini is a compact development board based on the ESP-8266EX module, offering integrated Wi-Fi connectivity in a mini form factor compatible with standard breadboards.

This board can be easily programmed using the Arduino IDE via the esp8266 core, or with NodeMCU. It features 11 digital I/O pins (except D0) supporting interrupts, PWM, I2C, and one-wire protocols, along with a single analog input limited to 3.2 V.

Specifications

• Processor: ESP-8266EX (80 or 160 MHz)
• Flash Memory: 4 MB
• Digital I/O Pins: 11 (support interrupts, PWM, I2C, one-wire except D0)
• Analog Inputs: 1 (max 3.2 V)
• Connectivity: Micro USB (power and programming)
• Wi-Fi: IEEE 802.11 b/g/n

Compatible with many shields and expansion modules. For Arduino programming, use the official repository: github.com/esp8266/Arduino.