you need to program Arduino to read a sensor and direct the data to the Serial Port. Here, a standard light-dependent resistor (LDR) is used as an analog input sensor and directs its output to the ...

This solar tracker system uses the Arduino UNO board, a servomotor ... In the setup() function we set the pins were the LDR are connected as INPUTs and position the servo motor at 90° then wait for a ...