ITEM NAME:D1 Mini V3.1.0 wifi internet of things development board based esp8266 A 3C Description What's new about V3.1.0 Optimize the circuit New Logo - LOLIN Features 11 digital input/output pins, all pins have interrupt/pwm/I2C/one-wire supported(except D0) 1 analog input(3.2V max input) a Micro USB connection Compatible with MicroPython, Arduino, Nodemcu lots of Shields Package included: 1.Long femalepinsx2pcs 2.Short female pins x2pcs 3.Normal pins x2pcs 4.LOLIN D1 mini x1pcs.What's new about V3.1.0. LOLIN D1 mini x1pcs. 11 digital input/output pins, all pins have interrupt/pwm/I2C/one-wire supported(except D0). Optimize the circuit. Compatible with MicroPython, Arduino, Nodemcu lots of Shields.