Detecting Obstacles and Warning with Arduino and HC-SR04 Ultrasonic Sensor

This is tutorial to help you understand ultrasonic and buzzer and go deeper into learning Arduino, follow these steps and give me feedback please. It is an easy to make fun project that you can build in 30 minutes or so. Lets get started !!

Step 1: What You Need

1 x Arduino UNO R3
1 x HC-SR04 Ultrasonic Distance Sensor
1 x Buzzer
1 x Breadboard
1 x Arduino USB Cable
1 x Computer with Arduino 
Few Wires

Don't have components? Don't worry. Just click the component's name. 

Step 2: Connect Your Circuit 

Connect the Buzzer POSITIVE terminal to the Arduino pin 2 and the NEGATIVE terminal to the Gnd. Connect the VCC pin of ultrasonic to +5V pin of Arduino board and the Gnd to the ground. Connect trig pin to pin 10 and echo pin to pin 19. The schematic circuit diagram may help you.

Schematic Ciruit Diagram 

Step 3: Upload The Code To Your Arduino 

Download: 

Arduino software

Sources:[https://www.hackster.io/ammaratef45/detecting-obstacles-and-warning-arduino-and-ultrasonic-13e5ea?ref=platform&ref_id=424_trending___&offset=59]

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Author & Editor

My Robot Education Sdn. Bhd. (Robotedu.my) was founded in 2015 as the first robotics education centre in Malaysia to provide Arduino-based robotics courses for youths. Our vision is to be able to provide robotics education to every youth in Malaysia.