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