Aim:
To connect a sensor (button or LDR) to Arduino and observe input readings using Serial Monitor.

Requirements:

• Computer with internet

• Tinkercad account

• Virtual components:

  • Arduino Uno

  • Breadboard

  • Push Button or LDR

  • Resistor (10kΩ for LDR or pull-down for button)

  • Wires

Steps:

1. Go to Tinkercad → Create a New Circuit.

2. Drag in Arduino Uno and Breadboard.

3. Connect either:

   • Push Button to a Digital Pin (with a pull-down resistor), or

   • LDR to an Analog Pin (with a 10kΩ resistor).

4. Use Code Blocks or Text Code to read the sensor value.

5. Open the Serial Monitor and observe what happens when you press the button or change light over the LDR.