Ultrasonic Distance Sensor

Measure distances from your smartphone!

Sep 8, 2022

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2474 views

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1 respects

smart appliances

data collection

internet of things

Devices & Components

Ultrasonic Sensor - HC-SR04 (Generic)

Arduino Pro Micro

Hardware & Tools

Soldering iron (generic)

Solder Wire, Lead Free

Software & Tools

Arduino IDE

Project description

Code

arduino

1/*
2*
3*
4*/
5#include <Keyboard.h>
6long readUltrasonicDistance(int  triggerPin, int echoPin)
7{
8pinMode(triggerPin, OUTPUT); // Clear the trigger
9digitalWrite(triggerPin,  LOW);
10delayMicroseconds(2);
11digitalWrite(triggerPin, HIGH);
12delayMicroseconds(10);
13digitalWrite(triggerPin,  LOW);
14pinMode(echoPin, INPUT);
15return pulseIn(echoPin, HIGH);
16}
17void  setup() {
18Serial.begin(9600);
19Keyboard.begin();
20}
21void loop() {
22Serial.println(0.01723  * readUltrasonicDistance(3, 5));
23Keyboard.print(0.01723 * readUltrasonicDistance(3,  5));
24Keyboard.press(0x20);
25Keyboard.releaseAll();
26delay(500);
27}
28

/*
*
*
*/
#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);
}

Downloadable files

Schematic

Documentation

Enclosure_Part1

Enclosure_Part2

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