coloitu_
Published © CC BY-NC-ND

Ultrasonic Distance Sensor

Measure distances from your smartphone!

BeginnerFull instructions provided131
Ultrasonic Distance Sensor

Things used in this project

Hardware components

SparkFun Arduino Pro Micro
×1
Ultrasonic Sensor - HC-SR04 (Generic)
Ultrasonic Sensor - HC-SR04 (Generic)
×1

Software apps and online services

Arduino IDE
Arduino IDE

Hand tools and fabrication machines

Soldering iron (generic)
Soldering iron (generic)
Solder Wire, Lead Free
Solder Wire, Lead Free

Story

Read more

Custom parts and enclosures

Enclosure_Part1

Enclosure_Part2

Schematics

Schematic

Code

Code

Arduino
/*
*
*
*/
#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_

coloitu_

17 projects • 2 followers

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