NodeMCU ESP8266 Wifi Development Board – Amica V2 Breadboard Friendly The Development Kit based on ESP8266, integates GPIO, PWM, IIC, 1-Wire and ADC all in one board. Power your developement in the fastest way combinating with NodeMCU Firmware! CP2102 based USB-TTL included, plug amp;play 10 GPIO, every GPIO can be PWM, I2C, 1-wire PCB antenna