DC Motor speed control and measurement

Arduino varies speed of DC Motor using PWM and measures its RPM using optical sensor and displays them on LCD

Feb 16, 2020

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rpm measurement

Devices & Components

1

Arduino Uno Rev3

1

Geared DC Motor, 12 V

1

Darlington High Power Transistor

1

Alphanumeric LCD, 20 x 4

Hardware & Tools

1

Breadboard, 270 Pin

Software & Tools

Arduino IDE

Project description

Code

DC Motor speed control and measurement using Arduino and LCD

c_cpp

DC Motor speed control and measurement using Arduino and LCD

1#include <LiquidCrystal.h>
2
3LiquidCrystal lcd(8, 9, 10, 11, 12,   13);
4#define motor_RPS_pulse_ip 7
5#define motor_PWM_pulse_ip 4
6int motor_RPS_Ton,motor_RPS_Toff,PWM_Ton,PWM_Toff,PWM_T;
7int   PWM_duty,pulse_width=255,RPS,motor_RPS_period,RPM;
8float voltage;
9   
10void   setup()
11{
12  pinMode(motor_RPS_pulse_ip,INPUT);
13  pinMode(motor_PWM_pulse_ip,INPUT);
14   lcd.begin(16, 4);
15  lcd.clear();
16  lcd.print("Pulse Width:");
17  lcd.setCursor(0,1);
18   lcd.print("PWM Volt:");
19  lcd.setCursor(0,2);
20  lcd.print("Speed(RPS):");    
21  lcd.setCursor(0,3);
22  lcd.print("Speed(RPM):");   
23}
24void loop()
25{
26    analogWrite(3,pulse_width);  
27   PWM_Ton= pulseIn(motor_PWM_pulse_ip,HIGH);
28    PWM_Toff=pulseIn(motor_PWM_pulse_ip,LOW); 
29   delay(2000);    
30   PWM_T   = PWM_Ton+PWM_Toff;
31   PWM_duty = (PWM_Ton/PWM_T)*100;  
32   voltage = 0.12*PWM_duty;   
33   lcd.setCursor(12,0);
34   lcd.print(PWM_duty); 
35   lcd.print('%');    
36   lcd.setCursor(9,1);
37   lcd.print(voltage); 
38   lcd.print('V');   
39    pulse_width-=15;
40   if(pulse_width==90) pulse_width = 255;
41   delay(3000);
42}

#include <LiquidCrystal.h>

LiquidCrystal lcd(8, 9, 10, 11, 12,   13);
#define motor_RPS_pulse_ip 7
#define motor_PWM_pulse_ip 4
int motor_RPS_Ton,motor_RPS_Toff,PWM_Ton,PWM_Toff,PWM_T;
int   PWM_duty,pulse_width=255,RPS,motor_RPS_period,RPM;
float voltage;
   
void   setup()
{
  pinMode(motor_RPS_pulse_ip,INPUT);
  pinMode(motor_PWM_pulse_ip,INPUT);
   lcd.begin(16, 4);
  lcd.clear();
  lcd.print("Pulse Width:");
  lcd.setCursor(0,1);
   lcd.print("PWM Volt:");
  lcd.setCursor(0,2);
  lcd.print("Speed(RPS):");    
  lcd.setCursor(0,3);
  lcd.print("Speed(RPM):");   
}
void loop()
{
    analogWrite(3,pulse_width);  
   PWM_Ton= pulseIn(motor_PWM_pulse_ip,HIGH);
    PWM_Toff=pulseIn(motor_PWM_pulse_ip,LOW); 
   delay(2000);    
   PWM_T   = PWM_Ton+PWM_Toff;
   PWM_duty = (PWM_Ton/PWM_T)*100;  
   voltage = 0.12*PWM_duty;   
   lcd.setCursor(12,0);
   lcd.print(PWM_duty); 
   lcd.print('%');    
   lcd.setCursor(9,1);
   lcd.print(voltage); 
   lcd.print('V');   
    pulse_width-=15;
   if(pulse_width==90) pulse_width = 255;
   delay(3000);
}

DC Motor speed control and measurement using Arduino and LCD

c_cpp

DC Motor speed control and measurement using Arduino and LCD

1#include <LiquidCrystal.h>
2
3LiquidCrystal lcd(8, 9, 10, 11, 12,
4  13);
5#define motor_RPS_pulse_ip 7
6#define motor_PWM_pulse_ip 4
7int motor_RPS_Ton,motor_RPS_Toff,PWM_Ton,PWM_Toff,PWM_T;
8int
9  PWM_duty,pulse_width=255,RPS,motor_RPS_period,RPM;
10float voltage;
11   
12void
13  setup()
14{
15  pinMode(motor_RPS_pulse_ip,INPUT);
16  pinMode(motor_PWM_pulse_ip,INPUT);
17
18  lcd.begin(16, 4);
19  lcd.clear();
20  lcd.print("Pulse Width:");
21  lcd.setCursor(0,1);
22
23  lcd.print("PWM Volt:");
24  lcd.setCursor(0,2);
25  lcd.print("Speed(RPS):");
26   
27  lcd.setCursor(0,3);
28  lcd.print("Speed(RPM):");   
29}
30void loop()
31{
32
33   analogWrite(3,pulse_width);  
34   PWM_Ton= pulseIn(motor_PWM_pulse_ip,HIGH);
35
36   PWM_Toff=pulseIn(motor_PWM_pulse_ip,LOW); 
37   delay(2000);    
38   PWM_T
39  = PWM_Ton+PWM_Toff;
40   PWM_duty = (PWM_Ton/PWM_T)*100;  
41   voltage = 0.12*PWM_duty;
42  
43   lcd.setCursor(12,0);
44   lcd.print(PWM_duty); 
45   lcd.print('%');
46   
47   lcd.setCursor(9,1);
48   lcd.print(voltage); 
49   lcd.print('V');   
50
51   pulse_width-=15;
52   if(pulse_width==90) pulse_width = 255;
53   delay(3000);
54}

#include <LiquidCrystal.h>

LiquidCrystal lcd(8, 9, 10, 11, 12,
  13);
#define motor_RPS_pulse_ip 7
#define motor_PWM_pulse_ip 4
int motor_RPS_Ton,motor_RPS_Toff,PWM_Ton,PWM_Toff,PWM_T;
int
  PWM_duty,pulse_width=255,RPS,motor_RPS_period,RPM;
float voltage;
   
void
  setup()
{
  pinMode(motor_RPS_pulse_ip,INPUT);
  pinMode(motor_PWM_pulse_ip,INPUT);

  lcd.begin(16, 4);
  lcd.clear();
  lcd.print("Pulse Width:");
  lcd.setCursor(0,1);

  lcd.print("PWM Volt:");
  lcd.setCursor(0,2);
  lcd.print("Speed(RPS):");
   
  lcd.setCursor(0,3);
  lcd.print("Speed(RPM):");   
}
void loop()
{

   analogWrite(3,pulse_width);  
   PWM_Ton= pulseIn(motor_PWM_pulse_ip,HIGH);

   PWM_Toff=pulseIn(motor_PWM_pulse_ip,LOW); 
   delay(2000);    
   PWM_T
  = PWM_Ton+PWM_Toff;
   PWM_duty = (PWM_Ton/PWM_T)*100;  
   voltage = 0.12*PWM_duty;
  
   lcd.setCursor(12,0);
   lcd.print(PWM_duty); 
   lcd.print('%');
   
   lcd.setCursor(9,1);
   lcd.print(voltage); 
   lcd.print('V');   

   pulse_width-=15;
   if(pulse_width==90) pulse_width = 255;
   delay(3000);
}

DC Motor speed control and measurement using Arduino and LCD

c_cpp

DC Motor speed control and measurement using Arduino and LCD

1#include <LiquidCrystal.h>
2
3LiquidCrystal lcd(8, 9, 10, 11, 12,  13);
4#define motor_RPS_pulse_ip 7
5#define motor_PWM_pulse_ip 4
6int motor_RPS_Ton,motor_RPS_Toff,PWM_Ton,PWM_Toff,PWM_T;
7int  PWM_duty,pulse_width=255,RPS,motor_RPS_period,RPM;
8float voltage;
9   
10void  setup()
11{
12  pinMode(motor_RPS_pulse_ip,INPUT);
13  pinMode(motor_PWM_pulse_ip,INPUT);
14  lcd.begin(16, 4);
15  lcd.clear();
16  lcd.print("Pulse Width:");
17  lcd.setCursor(0,1);
18  lcd.print("PWM Volt:");
19  lcd.setCursor(0,2);
20  lcd.print("Speed(RPS):");   
21  lcd.setCursor(0,3);
22  lcd.print("Speed(RPM):");   
23}
24void loop()
25{
26   analogWrite(3,pulse_width);  
27   PWM_Ton= pulseIn(motor_PWM_pulse_ip,HIGH);
28   PWM_Toff=pulseIn(motor_PWM_pulse_ip,LOW); 
29   delay(2000);    
30   PWM_T  = PWM_Ton+PWM_Toff;
31   PWM_duty = (PWM_Ton/PWM_T)*100;  
32   voltage = 0.12*PWM_duty;  
33   lcd.setCursor(12,0);
34   lcd.print(PWM_duty); 
35   lcd.print('%');   
36   lcd.setCursor(9,1);
37   lcd.print(voltage); 
38   lcd.print('V');   
39   pulse_width-=15;
40   if(pulse_width==90) pulse_width = 255;
41   delay(3000);
42}

#include <LiquidCrystal.h>

LiquidCrystal lcd(8, 9, 10, 11, 12,  13);
#define motor_RPS_pulse_ip 7
#define motor_PWM_pulse_ip 4
int motor_RPS_Ton,motor_RPS_Toff,PWM_Ton,PWM_Toff,PWM_T;
int  PWM_duty,pulse_width=255,RPS,motor_RPS_period,RPM;
float voltage;
   
void  setup()
{
  pinMode(motor_RPS_pulse_ip,INPUT);
  pinMode(motor_PWM_pulse_ip,INPUT);
  lcd.begin(16, 4);
  lcd.clear();
  lcd.print("Pulse Width:");
  lcd.setCursor(0,1);
  lcd.print("PWM Volt:");
  lcd.setCursor(0,2);
  lcd.print("Speed(RPS):");   
  lcd.setCursor(0,3);
  lcd.print("Speed(RPM):");   
}
void loop()
{
   analogWrite(3,pulse_width);  
   PWM_Ton= pulseIn(motor_PWM_pulse_ip,HIGH);
   PWM_Toff=pulseIn(motor_PWM_pulse_ip,LOW); 
   delay(2000);    
   PWM_T  = PWM_Ton+PWM_Toff;
   PWM_duty = (PWM_Ton/PWM_T)*100;  
   voltage = 0.12*PWM_duty;  
   lcd.setCursor(12,0);
   lcd.print(PWM_duty); 
   lcd.print('%');   
   lcd.setCursor(9,1);
   lcd.print(voltage); 
   lcd.print('V');   
   pulse_width-=15;
   if(pulse_width==90) pulse_width = 255;
   delay(3000);
}

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