Controlling a light-emitting diode (LED) with an ESP32 S3 is the surprisingly simple task, especially when using one 1k resistance. The load limits a current flowing through a LED, preventing it from frying out and http://theengineerstore.in/products/5v-2-1a-3-usb-power-bank-battery-charger-module-circuit-board-step-up-boost-diy