ESP32U ini dalam engoerasiannya membutuhkan antena.eksternal
ESP32-DevKitC V4 is a small-sized ESP32-based development board produced by Espressif. Most of the I/O pins are broken out to the pin headers on both sides for easy interfacing. Developers can either connect peripherals with jumper wires or mount ESP32-DevKitC V4 on a breadboard
Driver C2102 Micro USB port, default power supply 5V / GND header pins 3V3 / GND header pins