A minimal project that reads an LDR on analog pin A0, maps the 0\–1023 ADC value to 0\–100% and prints both the raw value and percentage to the serial monitor at 9600 baud.

The Arduino Uno is powered by the ATmega328P, an 8-bit microcontroller that runs at 16 MHz. It has 32 KB of flash memory, 2 KB of SRAM, and 1 KB of EEPROM. The board has 14 digital I/O pins (of which ...

Abstract: The growing need of energy efficiency and the sustainability of urban infrastructure has resulted in the use of smart technologies to automate the usage of public utilities. An example of ...