NodeMCU v3 ESP8266 adalah development board open source yg dapat digunakan untuk membuat aplikasi IoT hanya dgn beberapa baris Lua script langsung melalui USB.
Kita juga bisa menggunakan IDE arduino untuk melakukan pemrogramannya
Spesifikasi - Communication interface voltage : 3.3V. - Antenna type : Built-in PCB antenna is available. - Wireless 802.11 b/g/n standard - WiFi at 2.4GHz, support WPA / WPA2 security mode - Support STA/AP/STA + AP three operating modes - Built-in TCP/IP protocol stack to support multiple TCP Client connections (5 MAX) - D0 ~ D8, SD1 ~ SD3: used as GPIO, PWM, IIC, etc., port driver capability 15mA - AD0 : 1 channel ADC - Power input : 4.5V ~ 9V (10VMAX), USB-powered - Current : continuous transmission : 70mA (200mA MAX), Standby : 200uA - Transfer rate : 110-460800bps - Support UART / GPIO data communication interface - Remote firmware upgrade (OTA) - Support Smart Link Smart Networking - Working temperature : -40 Deg ~ + 125 Deg - Drive Type : Dual high-power H-bridge driver - ESP8266 has IO Pin - Don't need to download resetting - A great set of tools to develop ESP8266 - Flash size : 4MByte