Published September 8, 2022 © CC BY-NC-ND

Ultrasonic Distance Sensor

Measure distances from your smartphone!

BeginnerFull instructions provided259

Things used in this project

Hardware components

SparkFun Arduino Pro Micro

Ultrasonic Sensor - HC-SR04 (Generic)

Software apps and online services

Arduino IDE

Hand tools and fabrication machines

Soldering iron (generic)

Solder Wire, Lead Free

Story

Ultrasonic Distance Measure

Measure distances by connecting this device to your smartphone with an USB cable. It has an android app to show the measure. It can measure distances anywhere from 0.01 to 5 meters. Great of measuring 90 degree distances. As it has ultrasonic technology, it is not affected by lighting conditions like laser or camera measurement.

Assembling.

The assembling is very straight forward. First the Arduino Pro Micro board has to be soldered to the board. Then, you have to bend the ultrasonic sensor's pins so that it has a 90 degree angle. Now solder the ultrasonic sensor to its place. It should be stacked on top of the Pro Micro.

Programming.

I chose the Arduino Pro Micro because it is based around the ATmega 32U4. This chip has the ability to communicate as a keyboard to the computer.

The code is written on Arduino, so it has to be uploaded from the Arduino IDE. The board is called Arduino Micro on the IDE and it should appear under the Arduino AVR Boards section.

Upload the code and it's ready to use.

Enclosure.

If you have access to a 3D printer, you can print a custom enclosure for the device. It is a simple model, it doesn't require support structures to print.

Application.

To install the application, simply download the.apk file and open it. There is only support for Android devices.

The application has a simple design that can easily be understood.

To download the Application, Gerber or order the board, visit the project on Pcbway: https://www.pcbway.com/project/shareproject/Ultrasonic_distance_sensor_5daf26b3.html

Schematics

Code

Code

/*
*
*
*/
#include <Keyboard.h>
long readUltrasonicDistance(int triggerPin, int echoPin)
{
pinMode(triggerPin, OUTPUT); // Clear the trigger
digitalWrite(triggerPin, LOW);
delayMicroseconds(2);
digitalWrite(triggerPin, HIGH);
delayMicroseconds(10);
digitalWrite(triggerPin, LOW);
pinMode(echoPin, INPUT);
return pulseIn(echoPin, HIGH);
}
void setup() {
Serial.begin(9600);
Keyboard.begin();
}
void loop() {
Serial.println(0.01723 * readUltrasonicDistance(3, 5));
Keyboard.print(0.01723 * readUltrasonicDistance(3, 5));
Keyboard.press(0x20);
Keyboard.releaseAll();
delay(500);
}

Credits

coloitu_

19 projects • 3 followers

Ultrasonic Distance Sensor

Things used in this project

Hardware components

Software apps and online services

Hand tools and fabrication machines

Story

Ultrasonic Distance Measure

Assembling.

Programming.

Enclosure.

Application.

Custom parts and enclosures

Enclosure_Part1

Enclosure_Part2

Schematics

Schematic

Code

Code

Credits

coloitu_

Comments

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Ultrasonic Distance Sensor

Ultrasonic Distance Sensor

Things used in this project

Hardware components

Software apps and online services

Hand tools and fabrication machines

Story

Ultrasonic Distance Measure

Assembling.

Programming.

Enclosure.

Application.

Custom parts and enclosures

Enclosure_Part1

Enclosure_Part2

Schematics

Schematic

Code

Code

Credits

coloitu_

Comments

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