A basic circuit illustrates the way for build a electrical divider with a ESP32 S3 microcontroller and one 1k kiloohm resistor. Using positioning pair of impedances in order, one can reduce a voltage level to the value http://theengineerstore.in/products/5v-2-1a-3-usb-power-bank-battery-charger-module-circuit-board-step-up-boost-diy