Arduino UNO ve 74HC595 Shift Register ile 7 Segment Displayli Sayıcı Uygulama Devresi ve Program Kodu

Yukarıdaki devrede Arduino UNO ve 74HC595 Shift Register ile 7 Segment Displayli Sayıcı Uygulama Devresi görülmektedir.

Bu devrede push butona basılarak 7 segment displayde ileri yönde sayma yapılmaktadır.

Kullanılan Malzemeler : 

Arduino UNO board
4 Digit ortak anotlu 7 segment display
74HC595 shift register
4 x PNP transistor (2SA1015, 2S9015, 2N3906 …)
8 x 100 ohm direnç
4 x 4.7k ohm direnç
Push buton
Breadboard

Devrenin board üzerinde kurulmuş görüntüsü

Arduino Kod :


/*
* 7-segment display with 74HC595 shift register
* 4-Digit counter example.
* Common anode 7-segment display is used.
* This is a free software with NO WARRANTY.
* http://elektrikelektronikegitimi.blogspot.com/
*/

// counter button definition
#define button A0

// shift register pin definitions
#define clockPin 7 // clock pin
#define dataPin 6 // data pin

// common pins of the four digits definitions
#define Dig1 5
#define Dig2 4
#define Dig3 3
#define Dig4 2

// variable declarations
byte current_digit;
int count = 0;
void disp(byte number, bool dec_point = 0);

void setup()
{
pinMode(button, INPUT_PULLUP);
pinMode(Dig1, OUTPUT);
pinMode(Dig2, OUTPUT);
pinMode(Dig3, OUTPUT);
pinMode(Dig4, OUTPUT);
pinMode(clockPin, OUTPUT);
pinMode(dataPin, OUTPUT);

disp_off(); // turn off the display

// Timer1 module overflow interrupt configuration
TCCR1A = 0;
TCCR1B = 1; // enable Timer1 with prescaler = 1 ( 16 ticks each 1 µs)
TCNT1 = 0; // set Timer1 preload value to 0 (reset)
TIMSK1 = 1; // enable Timer1 overflow interrupt
}

ISR(TIMER1_OVF_vect) // Timer1 interrupt service routine (ISR)
{
disp_off(); // turn off the display

switch (current_digit)
{
case 1:
disp(count / 1000); // prepare to display digit 1 (most left)
digitalWrite(Dig1, LOW); // turn on digit 1
break;

case 2:
disp( (count / 100) % 10 ); // prepare to display digit 2
digitalWrite(Dig2, LOW); // turn on digit 2
break;

case 3:
disp( (count / 10) % 10 ); // prepare to display digit 3
digitalWrite(Dig3, LOW); // turn on digit 3
break;

case 4:
disp(count % 10); // prepare to display digit 4 (most right)
digitalWrite(Dig4, LOW); // turn on digit 4
}

current_digit = (current_digit % 4) + 1;
}

// main loop
void loop()
{
if(digitalRead(button) == 0)
{
count++; // increment 'count' by 1
if(count > 9999)
count = 0;
delay(200); // wait 200 milliseconds
}
}

void disp(byte number, bool dec_point)
{
switch (number)
{
case 0: // print 0
shiftOut(dataPin, clockPin, MSBFIRST, 0x02 | !dec_point);
digitalWrite(clockPin, HIGH);
digitalWrite(clockPin, LOW);
break;

case 1: // print 1
shiftOut(dataPin, clockPin, MSBFIRST, 0x9E | !dec_point);
digitalWrite(clockPin, HIGH);
digitalWrite(clockPin, LOW);
break;

case 2: // print 2
shiftOut(dataPin, clockPin, MSBFIRST, 0x24 | !dec_point);
digitalWrite(clockPin, HIGH);
digitalWrite(clockPin, LOW);
break;

case 3: // print 3
shiftOut(dataPin, clockPin, MSBFIRST, 0x0C | !dec_point);
digitalWrite(clockPin, HIGH);
digitalWrite(clockPin, LOW);
break;

case 4: // print 4
shiftOut(dataPin, clockPin, MSBFIRST, 0x98 | !dec_point);
digitalWrite(clockPin, HIGH);
digitalWrite(clockPin, LOW);
break;

case 5: // print 5
shiftOut(dataPin, clockPin, MSBFIRST, 0x48 | !dec_point);
digitalWrite(clockPin, HIGH);
digitalWrite(clockPin, LOW);
break;

case 6: // print 6
shiftOut(dataPin, clockPin, MSBFIRST, 0x40 | !dec_point);
digitalWrite(clockPin, HIGH);
digitalWrite(clockPin, LOW);
break;

case 7: // print 7
shiftOut(dataPin, clockPin, MSBFIRST, 0x1E | !dec_point);
digitalWrite(clockPin, HIGH);
digitalWrite(clockPin, LOW);
break;

case 8: // print 8
shiftOut(dataPin, clockPin, MSBFIRST, !dec_point);
digitalWrite(clockPin, HIGH);
digitalWrite(clockPin, LOW);
break;

case 9: // print 9
shiftOut(dataPin, clockPin, MSBFIRST, 0x08 | !dec_point);
digitalWrite(clockPin, HIGH);
digitalWrite(clockPin, LOW);
}
}

void disp_off()
{
digitalWrite(Dig1, HIGH);
digitalWrite(Dig2, HIGH);
digitalWrite(Dig3, HIGH);
digitalWrite(Dig4, HIGH);
}

// end of code.

Arduino UNO ve LM335 Sıcaklık Sensörü ile 7 Segment Displayli Uygulama Devresi ve Program Kodu

Yukarıdaki devredeArduino UNO ve LM335 Sıcaklık Sensörü ile 7 Segment Displayli Uygulama Devresi görülmektedir.

Bu devrede LM335 sıcaklık sensörü ile yapılan ölçüm 7 segment displayde görülmektedir.

LM335 sıcaklık sensörü 10 mV/°K. 10 mV çıkışı 1 Kelvi derecesini göstermektedir. Örneğin LM335 çıkış gerilimi 3.03 V (3030 mV) olduğunda sıcaklık 303 Kelvin = 30 °Celsius (30 derece) olur.

Kullanılan Devre Elemanları :

Arduino UNO board
3-digit veya 4-digit ortak anotlu 7 segment display
LM335 sıcaklık sensörü
3 x PNP transistor (2SA1015, 2S9015, 2N3906 …)
7 x 100 ohm direnç
3 x 4.7k ohm direnç
2.2k ohm direnç
Breadboard

Arduino Kodu

/*
* Interfacing Arduino with LM335 temperature sensor and 7-segment display.
* Common anode 7-segment display is used.
* This is a free software with NO WARRANTY.
* http://elektrikelektronikegitimi.blogspot.com
*/

// define LM335 data pin connection
#define LM335_pin A0

// segment pins definitions
#define SegA 12
#define SegB 11
#define SegC 10
#define SegD 9
#define SegE 8
#define SegF 7
#define SegG 6
// common pins of the three digits definitions
#define Dig1 4
#define Dig2 3
#define Dig3 2

// variable declarations
byte current_digit;
int temp;

void setup()
{
pinMode(SegA, OUTPUT);
pinMode(SegB, OUTPUT);
pinMode(SegC, OUTPUT);
pinMode(SegD, OUTPUT);
pinMode(SegE, OUTPUT);
pinMode(SegF, OUTPUT);
pinMode(SegG, OUTPUT);
pinMode(Dig1, OUTPUT);
pinMode(Dig2, OUTPUT);
pinMode(Dig3, OUTPUT);

disp_off(); // turn off the display

// Timer1 module overflow interrupt configuration
TCCR1A = 0;
TCCR1B = 1; // enable Timer1 with prescaler = 1 ( 16 ticks each 1 µs)
TCNT1 = 0; // set Timer1 preload value to 0 (reset)
TIMSK1 = 1; // enable Timer1 overflow interrupt
}

ISR(TIMER1_OVF_vect) // Timer1 interrupt service routine (ISR)
{
disp_off(); // turn off the display

byte abs_temp = abs(temp); // abs: absolute value

switch (current_digit)
{
case 1:
if(temp < 0 || temp >= 100){
if(temp < 0)
disp(10); // print minus sign (-)
else
disp(1); // print 1
digitalWrite(Dig1, LOW); // turn on digit 1
}
break;

case 2:
disp( (abs_temp / 10) % 10); // prepare to display digit 2
digitalWrite(Dig2, LOW); // turn on digit 2
break;

case 3:
disp(abs_temp % 10); // prepare to display digit 3
digitalWrite(Dig3, LOW); // turn on digit 3
}

current_digit = (current_digit % 3) + 1;
}

// main loop
void loop()
{
int kelvin = analogRead(LM335_pin) * 0.489; // get temperature in degree Kelvin
temp = kelvin - 273; // convert to degree Celsius

delay(1000); // wait 1 second
}

void disp(byte number)
{
switch (number)
{
case 0: // print 0
digitalWrite(SegA, LOW);
digitalWrite(SegB, LOW);
digitalWrite(SegC, LOW);
digitalWrite(SegD, LOW);
digitalWrite(SegE, LOW);
digitalWrite(SegF, LOW);
digitalWrite(SegG, HIGH);
break;

case 1: // print 1
digitalWrite(SegA, HIGH);
digitalWrite(SegB, LOW);
digitalWrite(SegC, LOW);
digitalWrite(SegD, HIGH);
digitalWrite(SegE, HIGH);
digitalWrite(SegF, HIGH);
digitalWrite(SegG, HIGH);
break;

case 2: // print 2
digitalWrite(SegA, LOW);
digitalWrite(SegB, LOW);
digitalWrite(SegC, HIGH);
digitalWrite(SegD, LOW);
digitalWrite(SegE, LOW);
digitalWrite(SegF, HIGH);
digitalWrite(SegG, LOW);
break;

case 3: // print 3
digitalWrite(SegA, LOW);
digitalWrite(SegB, LOW);
digitalWrite(SegC, LOW);
digitalWrite(SegD, LOW);
digitalWrite(SegE, HIGH);
digitalWrite(SegF, HIGH);
digitalWrite(SegG, LOW);
break;

case 4: // print 4
digitalWrite(SegA, HIGH);
digitalWrite(SegB, LOW);
digitalWrite(SegC, LOW);
digitalWrite(SegD, HIGH);
digitalWrite(SegE, HIGH);
digitalWrite(SegF, LOW);
digitalWrite(SegG, LOW);
break;

case 5: // print 5
digitalWrite(SegA, LOW);
digitalWrite(SegB, HIGH);
digitalWrite(SegC, LOW);
digitalWrite(SegD, LOW);
digitalWrite(SegE, HIGH);
digitalWrite(SegF, LOW);
digitalWrite(SegG, LOW);
break;

case 6: // print 6
digitalWrite(SegA, LOW);
digitalWrite(SegB, HIGH);
digitalWrite(SegC, LOW);
digitalWrite(SegD, LOW);
digitalWrite(SegE, LOW);
digitalWrite(SegF, LOW);
digitalWrite(SegG, LOW);
break;

case 7: // print 7
digitalWrite(SegA, LOW);
digitalWrite(SegB, LOW);
digitalWrite(SegC, LOW);
digitalWrite(SegD, HIGH);
digitalWrite(SegE, HIGH);
digitalWrite(SegF, HIGH);
digitalWrite(SegG, HIGH);
break;

case 8: // print 8
digitalWrite(SegA, LOW);
digitalWrite(SegB, LOW);
digitalWrite(SegC, LOW);
digitalWrite(SegD, LOW);
digitalWrite(SegE, LOW);
digitalWrite(SegF, LOW);
digitalWrite(SegG, LOW);
break;

case 9: // print 9
digitalWrite(SegA, LOW);
digitalWrite(SegB, LOW);
digitalWrite(SegC, LOW);
digitalWrite(SegD, LOW);
digitalWrite(SegE, HIGH);
digitalWrite(SegF, LOW);
digitalWrite(SegG, LOW);
break;

case 10: // print -
digitalWrite(SegA, HIGH);
digitalWrite(SegB, HIGH);
digitalWrite(SegC, HIGH);
digitalWrite(SegD, HIGH);
digitalWrite(SegE, HIGH);
digitalWrite(SegF, HIGH);
digitalWrite(SegG, LOW);
}
}

void disp_off()
{
digitalWrite(Dig1, HIGH);
digitalWrite(Dig2, HIGH);
digitalWrite(Dig3, HIGH);
}

// end of code. 
 

Arduino nedir? Arduino İle Neler Yapılabilir? Nasıl Kullanılır?

 

Son yıllarda çok popüler olan Arduino açık kaynak kodlu bir mikrodenetleyici karttır. Yapabilecekleriniz hayal gücünüz ile sınırlıdır.

Arduino ile sensörler vasıtasıyla çevresiyle etkileşim içerisinde olan devreler, robotlar ve sistemler tasarlayabilirsiniz.

Kullanımı için az bir programlama bilgisi ile az bir elektronik bilgisi yeterlidir. Açık kaynak kodlu olduğu için internette yapmak isteyeceğiniz şeylerle ilgili pek çok hazır program ve hazır proje bulabilirsiniz. Bulduklarınızın üzerinde ufak değişikler yaparak özgün devreler ve tasarımlar ortaya çıkarabilirsiniz. Aşağıdaki videolardan ve verilen linklerden detaylı bilgi edinebilirsiniz.

https://www.youtube.com/playlist?list=PL-U_jBeM2gfBvzPVdERtv5As-cm7y9FzW

http://arduinoturkiye.com/

https://www.hobidevre.com/

https://www.direnc.net/

http://arduinom.org/