Make it Possible with Physics - Ultrasonic Thermometer!

In this tutorial, I will be giving the basics for an ultrasonic thermometer and the idea behind it.

Aug 9, 2016

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7 respects

thermometer

sensor

Devices & Components

Arduino Uno Rev3

HC-SR04 Ultrasonic Sensor

Software & Tools

Arduino IDE

Project description

Code

Main Arduino Sketch

arduino

Calculates the speed of sound and converts it to ambient temperature as mentioned in the description.

1#define echo 7
2#define trigger 8
3double delaytime, temperature,  speedofsound;
4
5void setup(){
6pinMode(trigger,OUTPUT);
7pinMode(echo,INPUT);
8Serial.begin(9600);
9}
10
11void  loop(){
12digitalWrite(trigger,LOW);
13delayMicroseconds(2);         //Standard  trigger-echo cycle provided by                              the manufacturer
14digitalWrite(trigger,HIGH);
15delayMicroseconds(10);
16digitalWrite(trigger,LOW);
17
18delaytime=pulseIn(echo,HIGH);
19speedofsound=370000/delaytime;
20temperature=(speedofsound-331.4)/0.6;
21Serial.println(temperature);
22delay(500);
23}

#define echo 7
#define trigger 8
double delaytime, temperature,  speedofsound;

void setup(){
pinMode(trigger,OUTPUT);
pinMode(echo,INPUT);
Serial.begin(9600);
}

void  loop(){
digitalWrite(trigger,LOW);
delayMicroseconds(2);         //Standard  trigger-echo cycle provided by                              the manufacturer
digitalWrite(trigger,HIGH);
delayMicroseconds(10);
digitalWrite(trigger,LOW);

delaytime=pulseIn(echo,HIGH);
speedofsound=370000/delaytime;
temperature=(speedofsound-331.4)/0.6;
Serial.println(temperature);
delay(500);
}

Main Arduino Sketch

arduino

Calculates the speed of sound and converts it to ambient temperature as mentioned in the description.

1#define echo 7
2#define trigger 8
3double delaytime, temperature,
4  speedofsound;
5
6void setup(){
7pinMode(trigger,OUTPUT);
8pinMode(echo,INPUT);
9Serial.begin(9600);
10}
11
12void
13  loop(){
14digitalWrite(trigger,LOW);
15delayMicroseconds(2);         //Standard
16  trigger-echo cycle provided by                              the manufacturer
17digitalWrite(trigger,HIGH);
18delayMicroseconds(10);
19digitalWrite(trigger,LOW);
20
21delaytime=pulseIn(echo,HIGH);
22speedofsound=370000/delaytime;
23temperature=(speedofsound-331.4)/0.6;
24Serial.println(temperature);
25delay(500);
26}

#define echo 7
#define trigger 8
double delaytime, temperature,
  speedofsound;

void setup(){
pinMode(trigger,OUTPUT);
pinMode(echo,INPUT);
Serial.begin(9600);
}

void
  loop(){
digitalWrite(trigger,LOW);
delayMicroseconds(2);         //Standard
  trigger-echo cycle provided by                              the manufacturer
digitalWrite(trigger,HIGH);
delayMicroseconds(10);
digitalWrite(trigger,LOW);

delaytime=pulseIn(echo,HIGH);
speedofsound=370000/delaytime;
temperature=(speedofsound-331.4)/0.6;
Serial.println(temperature);
delay(500);
}

Downloadable files

Sensor connections

Simple connection between Ardıuino UNO and the rangefinder module.

Sensor connections

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