D1 Mini NodeMcu 4M bytes Lua WIFI development board based ESP8266

ESP8266
WIFI Development Board
4M bytes
This is D1 mini, it is a mini WIFI board based on ESP-8266EX.
11 digital input/output pins, all pins have interrupt/pwm/I2C/one-wire
supported(except D0)
1 analog input(3.3V max input)
1 Micro USB connection