About the Project

About the Project

This project measures length using an ultrasonic sensor.

The ultrasonic sensor is placed at the starting point.
The object/cardboard is placed at the ending point.

When the push button is pressed:

• 1st press → measurement starts
• 2nd press → measurement stops and final value is held
• 3rd press → measurement starts again

Formula:

Length = Distance measured by ultrasonic sensor

Components Required

• Arduino Nano / Uno – 1
• Ultrasonic Sensor HC-SR04 – 1
• Push Button – 1
• Green LED – 1
• Red LED – 1
• 220Ω Resistors – 2
• Breadboard – 1
• Jumper Wires
• USB Cable