NODEMCU ESP32 Development Board
NodeMCU based on ESP-WROOM-32 module
30 GPIO Version
ESP32 is a dual-core 32-bit processor with built-in 2.4 GHz Wi-Fi and Bluetooth
4MByte flash memory
520KByte SRAM
2.2 to 3.6V Operating voltage range
In breadboard-friendly breakout
USB micro B for power and Serial communication, use to load the program and serial debugging too