Frequency and Duty Cycle Measurement Using Arduino

Arduino is used to measure frequency and duty cycle of pulses and display them on LCD.

Aug 31, 2019

•

113114 views

•

18 respects

frequency measurement

pulse width measurement

signal parameter measurements

Devices & Components

Arduino Uno Rev3

Alphanumeric LCD, 20 x 4

Hardware & Tools

Breadboard, 270 Pin

Software & Tools

Arduino IDE

Project description

Code

program to measure frequency and duty cycle and display it on LCD

c_cpp

measure frequency and duty cycle and display it on LCD

1#include <LiquidCrystal.h>
2
3LiquidCrystal lcd(8, 9, 10, 11, 12,   13);
4#define pulse_ip 7
5int ontime,offtime,duty;
6float freq,period;
7    
8void setup()
9{
10  pinMode(pulse_ip,INPUT);
11  lcd.begin(16, 4);
12   lcd.clear();
13  lcd.print("Freq:");
14  lcd.setCursor(0,1);
15  lcd.print("Ton:");
16   lcd.setCursor(0,2);
17  lcd.print("Toff:");  
18  lcd.setCursor(0,3);
19   lcd.print("Duty:");  
20}
21void loop()
22{
23   ontime = pulseIn(pulse_ip,HIGH);
24    offtime = pulseIn(pulse_ip,LOW);
25   period = ontime+offtime;
26   freq =   1000000.0/period;
27   duty = (ontime/period)*100; 
28   lcd.setCursor(4,1);
29    lcd.print(ontime);
30   lcd.print("us");
31   lcd.setCursor(5,2);
32   lcd.print(offtime);   
33   lcd.print("us");   
34   lcd.setCursor(5,0); 
35   lcd.print(freq);
36    lcd.print("Hz");
37   lcd.setCursor(6,3);
38   lcd.print(duty); 
39   lcd.print('%');   
40   delay(1000);
41}

#include <LiquidCrystal.h>

LiquidCrystal lcd(8, 9, 10, 11, 12,   13);
#define pulse_ip 7
int ontime,offtime,duty;
float freq,period;
    
void setup()
{
  pinMode(pulse_ip,INPUT);
  lcd.begin(16, 4);
   lcd.clear();
  lcd.print("Freq:");
  lcd.setCursor(0,1);
  lcd.print("Ton:");
   lcd.setCursor(0,2);
  lcd.print("Toff:");  
  lcd.setCursor(0,3);
   lcd.print("Duty:");  
}
void loop()
{
   ontime = pulseIn(pulse_ip,HIGH);
    offtime = pulseIn(pulse_ip,LOW);
   period = ontime+offtime;
   freq =   1000000.0/period;
   duty = (ontime/period)*100; 
   lcd.setCursor(4,1);
    lcd.print(ontime);
   lcd.print("us");
   lcd.setCursor(5,2);
   lcd.print(offtime);   
   lcd.print("us");   
   lcd.setCursor(5,0); 
   lcd.print(freq);
    lcd.print("Hz");
   lcd.setCursor(6,3);
   lcd.print(duty); 
   lcd.print('%');   
   delay(1000);
}

program to measure frequency and duty cycle and display it on LCD

c_cpp

measure frequency and duty cycle and display it on LCD

1#include <LiquidCrystal.h>
2
3LiquidCrystal lcd(8, 9, 10, 11, 12,  13);
4#define pulse_ip 7
5int ontime,offtime,duty;
6float freq,period;
7   
8void setup()
9{
10  pinMode(pulse_ip,INPUT);
11  lcd.begin(16, 4);
12  lcd.clear();
13  lcd.print("Freq:");
14  lcd.setCursor(0,1);
15  lcd.print("Ton:");
16  lcd.setCursor(0,2);
17  lcd.print("Toff:");  
18  lcd.setCursor(0,3);
19  lcd.print("Duty:");  
20}
21void loop()
22{
23   ontime = pulseIn(pulse_ip,HIGH);
24   offtime = pulseIn(pulse_ip,LOW);
25   period = ontime+offtime;
26   freq =  1000000.0/period;
27   duty = (ontime/period)*100; 
28   lcd.setCursor(4,1);
29   lcd.print(ontime);
30   lcd.print("us");
31   lcd.setCursor(5,2);
32   lcd.print(offtime);  
33   lcd.print("us");   
34   lcd.setCursor(5,0); 
35   lcd.print(freq);
36   lcd.print("Hz");
37   lcd.setCursor(6,3);
38   lcd.print(duty); 
39   lcd.print('%');  
40   delay(1000);
41}

#include <LiquidCrystal.h>

LiquidCrystal lcd(8, 9, 10, 11, 12,  13);
#define pulse_ip 7
int ontime,offtime,duty;
float freq,period;
   
void setup()
{
  pinMode(pulse_ip,INPUT);
  lcd.begin(16, 4);
  lcd.clear();
  lcd.print("Freq:");
  lcd.setCursor(0,1);
  lcd.print("Ton:");
  lcd.setCursor(0,2);
  lcd.print("Toff:");  
  lcd.setCursor(0,3);
  lcd.print("Duty:");  
}
void loop()
{
   ontime = pulseIn(pulse_ip,HIGH);
   offtime = pulseIn(pulse_ip,LOW);
   period = ontime+offtime;
   freq =  1000000.0/period;
   duty = (ontime/period)*100; 
   lcd.setCursor(4,1);
   lcd.print(ontime);
   lcd.print("us");
   lcd.setCursor(5,2);
   lcd.print(offtime);  
   lcd.print("us");   
   lcd.setCursor(5,0); 
   lcd.print(freq);
   lcd.print("Hz");
   lcd.setCursor(6,3);
   lcd.print(duty); 
   lcd.print('%');  
   delay(1000);
}

Downloadable files

frequency and duty cycle measurement using Arduino circuit

the circuit measures frequency and duty cycle of pulse using Arduino

frequency and duty cycle measurement using Arduino circuit

Comments

Only logged in users can leave comments

ambhatt

0 Followers

•

0 Projects

Intro