Introduction: Arduino Car Reverse Parking Alert System | Steps by Step

In this project, I will design a simple Arduino Car Reverse Parking Sensor Circuit using Arduino UNO and HC-SR04 Ultrasonic Sensor. This Arduino based Car Reverse alert system can be used for an Autonomous Navigation, Robot Ranging and other range related applications.

Step 1: Components Required:

Components Required:

1. Arduino UNO

2. HC-SR04 Ultrasonic Sensor

3. Mini Breadboard

4. Buzzer

5. Led's

6. 220Ω Resistor (1/4 Watt)

7.Connecting Wires

Step 2: Circuit Diagram:

The design of the Arduino Car Reverse Parking alert system Circuit is very simple. Starting with the Ultrasonic Sensor, it has 4 pins: VCC, TRIG, ECHO and GND.

The VCC and GND are connected to +5V and GND of the power supply while the TRIG and ECHO are connected to Digital I/O pins 9 and 7 of Arduino respectively.

The principle of the circuit is as follows: The Ultrasonic Sensor sends acoustic pulses and the Arduino measures the interval of each reflected signal. Based on this time interval, Arduino then calculates the distance of the object.
Arduino then activates the Buzzer if the distance between the sensor and object is less than a certain range.

Step 3: Ultrasonic Interfacing and Code Explained

For beginners, you can watch this video and learn how to interface the ultrasonic sensor. Also how to write the code.

Step 4: Code:

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Arduino Contest 2020

Participated in the
Arduino Contest 2020