Ultrasonic 30cm and under measure

Measure 30 cm and under

Oct 29, 2021

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ruler

led

ultrasonic

Components and supplies

LED (generic)

Male/Female Jumper Wires

Ultrasonic Sensor - HC-SR04 (Generic)

Arduino UNO

Apps and platforms

Arduino IDE

wokwi

Project description

Code

code

c_cpp

1#define trigPin 13
2
3#define echoPin 12
4
5#define led 11
6
7void  setup()
8
9{ Serial.begin (9600);
10
11pinMode(trigPin, OUTPUT);
12
13pinMode(echoPin,  INPUT);
14
15pinMode(led, OUTPUT);
16
17}
18
19void loop()
20
21{ long duration,  distance;
22
23digitalWrite(trigPin, LOW);
24
25delayMicroseconds(2);
26
27digitalWrite(trigPin,  HIGH);
28
29delayMicroseconds(10);
30
31digitalWrite(trigPin, LOW);
32
33duration  = pulseIn(echoPin, HIGH);
34
35distance = (duration/2) / 29.1;
36
37if (distance  < 30)
38
39{ digitalWrite(led,HIGH);
40
41}
42
43else {
44
45digitalWrite(led,LOW);
46
47}
48
49Serial.print(distance);
50
51Serial.println("  cm");
52
53delay(500);
54
55}

#define trigPin 13

#define echoPin 12

#define led 11

void  setup()

{ Serial.begin (9600);

pinMode(trigPin, OUTPUT);

pinMode(echoPin,  INPUT);

pinMode(led, OUTPUT);

}

void loop()

{ long duration,  distance;

digitalWrite(trigPin, LOW);

delayMicroseconds(2);

digitalWrite(trigPin,  HIGH);

delayMicroseconds(10);

digitalWrite(trigPin, LOW);

duration  = pulseIn(echoPin, HIGH);

distance = (duration/2) / 29.1;

if (distance  < 30)

{ digitalWrite(led,HIGH);

}

else {

digitalWrite(led,LOW);

}

Serial.print(distance);

Serial.println("  cm");

delay(500);

}

Downloadable files

schematic

the cuiccuit wireing made in wokwi

schematic

the cuiccuit wireing made in wokwi

schematic

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