Arduino – Ultrasonic Sensor with LEDs and buzzer

Hi guys,

This is my first tutorial, I’ve just started a few months ago learning electronics (previously I’ve just knew how to program in C and Python). When I finished this project (took me about 5 hours or something) I’ve decided to share to help anyone that is starting in electronics.

What’s this project about?

Basically we have an Ultrasonic sensor that measures the distance and the LED’s bar graph will light up according to our distance from the sensor and as we get closer the buzzer beeps in a different way. This circuit can work as a parking sensor! It’s easy and cheap.

Parts Required

1x Arduino (Click to see on Amazon)
1x 74HC595 8 Bit Shift Register
1x Breadboard
8x LEDs (for example: 3x red, 3x yellow, 2x green)
9x 220 Ohm Resistors
1x Buzzer
1x Ultrasonic Sensor (for exemple: HC-SR04)
Jumper Wires

parts

Schematics

Upload the Code below

Watch the video demonstration

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