EEP Practical Applications in Electrical Engineering Common - Lecture 02 - Arduino 2.ppt

EEP Practical Applications in Electrical Engineering Common - Lecture 02 - Arduino 2

1. Lecture (02)Lecture (02)
Arduino 2 Arduino 2
By:By:
Dr. Ahmed ElShafeeDr. Ahmed ElShafee
Dr. Ahmed ElShafee, ACU : Spring 2019 - EEP02 Practical Dr. Ahmed ElShafee, ACU : Spring 2019 - EEP02 Practical
Applications in Electrical Engineering 2Applications in Electrical Engineering 211

2. Project 02, press controlled led
•
Dr. Ahmed ElShafee, ACU : Spring 2019 - EEP02 Practical Applications in Electrical
Engineering 2
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3. •
Dr. Ahmed ElShafee, ACU : Spring 2019 - EEP02 Practical Applications in Electrical
Engineering 2
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#define LED 12
#define BUTTON 7
int Button_status=0;
void setup()
{
pinMode(LED, OUTPUT);
pinMode(BUTTON,INPUT);
}
void loop()
{
Button_status=digitalRead(BUTTON);
if(Button_status==HIGH)
{
digitalWrite(LED,LOW);
}
else
{
digitalWrite(LED,HIGH);
}
}

4. Project 03, press controlled led
status toggle
Dr. Ahmed ElShafee, ACU : Spring 2019 - EEP02 Practical Applications in Electrical
Engineering 2
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5. •
Dr. Ahmed ElShafee, ACU : Spring 2019 - EEP02 Practical Applications in Electrical
Engineering 2
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#define LED 12
#define BUTTON 7
int Button_status=0;
int Led_Status=0;
void setup()
{
pinMode(LED, OUTPUT);
pinMode(BUTTON,INPUT);
digitalWrite(LED,Led_Status);
}
void loop()
{
Button_status=digitalRead(BUTTON);
if(Button_status==LOW)
{
Led_Status=!Led_Status;
digitalWrite(LED,Led_Status);
delay(1000);
}
}

6. Project 04; press controlled led
Flasher
•
Dr. Ahmed ElShafee, ACU : Spring 2019 - EEP02 Practical Applications in Electrical
Engineering 2
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7. Dr. Ahmed ElShafee, ACU : Spring 2019 - EEP02 Practical Applications in Electrical
Engineering 2
7
#define LED 12
#define BUTTON 7
int Button_status=0;
int Led_Status=0;
void setup()
{
pinMode(LED, OUTPUT);
pinMode(BUTTON,INPUT);
digitalWrite(LED,Led_Status);
}
void loop()
{
Button_status=digitalRead(BUTTON);
if(Button_status==LOW)
{
Led_Status=!Led_Status;
digitalWrite(LED,Led_Status);
delay(250);
}
else
{
Led_Status=0;
digitalWrite(LED,Led_Status);
}
}

8. Analog Output
•To create an analog signal, the microcontroller uses a
technique called PWM. By varying the duty cycle, we can
mimic an “average” analog voltage.
Dr. Ahmed ElShafee, ACU : Spring 2019 - EEP02 Practical Applications in Electrical
Engineering 2
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•Pulse Width Modulation (PWM)

9. Project 05, led dimmer
•
Dr. Ahmed ElShafee, ACU : Spring 2019 - EEP02 Practical Applications in Electrical
Engineering 2
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10. •
Dr. Ahmed ElShafee, ACU : Spring 2019 - EEP02 Practical Applications in Electrical
Engineering 2
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#define LED 3
int brightness=0;
int fade=5;
void setup()
{
pinMode(LED, OUTPUT);
}
void loop()
{
analogWrite(LED,brightness);
brightness+=fade;
if((brightness==0) || (brightness==255))
fade=-fade;
delay(10);
}

11. Analog input
•Arduino uses a 10-bit A/D Converter:
•this means that you get input values from 0 to 1023
•0 V  0
•5 V  1023
Ex:
• int sensorValue = analogRead(A0);
Dr. Ahmed ElShafee, ACU : Spring 2019 - EEP02 Practical Applications in Electrical
Engineering 2
11

12. Project 06, Analog DC dimmer
•
Dr. Ahmed ElShafee, ACU : Spring 2019 - EEP02 Practical Applications in Electrical
Engineering 2
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13. •
Dr. Ahmed ElShafee, ACU : Spring 2019 - EEP02 Practical Applications in Electrical
Engineering 2
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#define LED 3
int brightness=0;
int control=0;
void setup()
{
pinMode(LED, OUTPUT);
}
void loop()
{
control=analogRead(0);
brightness=control/4;
analogWrite(LED,brightness);
}

14. Project 07, serial echo
•
Dr. Ahmed ElShafee, ACU : Spring 2019 - EEP02 Practical Applications in Electrical
Engineering 2
14
void setup()
{
Serial.begin(9600);
}
void loop()
{
if (Serial.available() > 0)
{
char inByte = Serial.read();
Serial.print("you typed : ");
Serial.print(inByte);
Serial.println();
}

}

15. Project 8, serial controlled leds
•
Dr. Ahmed ElShafee, ACU : Spring 2019 - EEP02 Practical Applications in Electrical
Engineering 2
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16. •
Dr. Ahmed ElShafee, ACU : Spring 2019 - EEP02 Practical Applications in Electrical
Engineering 2
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#define led1 11
#define led2 12
int led1_status=0;
int led2_status=0;
void setup()
{
Serial.begin(9600);
pinMode(led1,OUTPUT);
pinMode(led2,OUTPUT);
digitalWrite(led1,led1_status);
digitalWrite(led2,led2_status);
}
void loop()
{
if (Serial.available() > 0)
{
char inByte = Serial.read();
switch(inByte)
{
case '1':
led1_status=!led1_status;
digitalWrite(led1,led1_status);
Serial.print("led one is now :");
Serial.println(led1_status);
break;
case'2':
led2_status=!led2_status;
digitalWrite(led2,led2_status);
Serial.print("led two is now :");
Serial.println(led2_status);
break;
default:
Serial.println("unknown command");
break;
}
}
}

17. Project 9, serial controlled leds,
monitor press and pot
Dr. Ahmed ElShafee, ACU : Spring 2019 - EEP02 Practical Applications in Electrical
Engineering 2
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18. Dr. Ahmed ElShafee, ACU : Spring 2019 - EEP02 Practical Applications in Electrical
Engineering 2
18
#define led1 11
#define led2 12
#define button 7
int led1_status=0;
int led2_status=0;
int potValue=0;
int pressStatus=1;
void setup()
{
Serial.begin(9600);
pinMode(led1,OUTPUT);
pinMode(led2,OUTPUT);
digitalWrite(led1,led1_status);
digitalWrite(led2,led2_status);
}
void loop()
{
if(pressStatus!=digitalRead(button))
{
pressStatus=(int)digitalRead(button);
Serial.print("Button value = ");
Serial.println(pressStatus);
}
if (Serial.available() > 0)
{
char inByte = Serial.read();
switch(inByte)
{
case '1':
led1_status=!led1_status;
digitalWrite(led1,led1_status);
Serial.print("led one is now :");
Serial.println(led1_status);
break;
case '2':
led2_status=!led2_status;
digitalWrite(led2,led2_status);
Serial.print("led two is now :");
Serial.println(led2_status);
break;
case 'p':
potValue=analogRead(0);
Serial.print("Pot value = ");
Serial.println((float)potValue*5/1024);
break;

19. Dr. Ahmed ElShafee, ACU : Spring 2019 - EEP02 Practical Applications in Electrical
Engineering 2
19
default:
Serial.println("unknown command");
break;
}
}
}

20. Dr. Ahmed ElShafee, ACU : Spring 2019 - EEP02 Practical Applications in Electrical
Engineering 2
20
#define led1 11
#define led2 12
#define button 7
int led1_status=0;
int led2_status=0;
int potValue=0;
int pressStatus=1;
void setup()
{
Serial.begin(9600);
pinMode(led1,OUTPUT);
pinMode(led2,OUTPUT);
digitalWrite(led1,led1_status);
digitalWrite(led2,led2_status);
}
void loop()
{
if(analogRead(0)!=potValue)
{
potValue=analogRead(0);
Serial.print("Pot value = ");
Serial.println((float)potValue*5/1024); }
if(pressStatus!=digitalRead(button))
{
pressStatus=(int)digitalRead(button);
Serial.print("Button value = ");
Serial.println(pressStatus);
}
if (Serial.available() > 0)
{
char inByte = Serial.read();
switch(inByte)
{
case '1':
led1_status=!led1_status;
digitalWrite(led1,led1_status);
Serial.print("led one is now :");
Serial.println(led1_status);
break;
case '2':
led2_status=!led2_status;
digitalWrite(led2,led2_status);
Serial.print("led two is now :");
Serial.println(led2_status);
break;

21. Dr. Ahmed ElShafee, ACU : Spring 2019 - EEP02 Practical Applications in Electrical
Engineering 2
21
default:
Serial.println("unknown command");
break;
}
}
}

22. Dr. Ahmed ElShafee, ACU : Spring 2019 - EEP02 Practical Applications in Electrical
Engineering 2neering 2App EE II
22

23. Thanks,..Thanks,..
See you next week (ISA),…See you next week (ISA),…
Dr. Ahmed ElShafee, ACU : Spring 2019 - EEP02 Practical
Applications in Electrical Engineering 2neering 2App EE II
2323