How To Connect Shift Register To Arduino

In our previous commodity on 74HC595 Shift Register, nosotros ave discussed the minimum basic theory. In this Article, We Volition Discuss is How To Connect 74HC595 Shift Register With Arduino and LEDs. From the diagram on previous article, we tin can say that ane side of the IC is for connecting with Arduino, another with things like LEDs. It is non very complex, although it appears to exist complex.

Connect 74HC595 Shift Register With Arduino

Place the shift annals on your breadboard, commonly that is the centre of breadboard where each side of the IC will be on separate side of the breadboard (will not take brusque circuit). Identify the notch on IC. Information technology is top side. On the left side to it, the pins are 1-8 (1 is just abreast the notch). Contrary to pivot 1 volition be pin 16 (right mitt side of the notch). That is VCC pin.

How To Connect 74HC595 Shift Register

Pivot xvi (VCC) —-> 5v Pin on the Arduino
Pin 10 (SRCLR) –> 5v Pin on the Arduino
Pin 8 (GND) —–> GND Pin on the Arduino
Pin 13 (OE) —–> GND pivot on the Arduino
Pin 11 (SRCLK) –> Pin eleven on the Arduino (clock pin)
Pin 12 (RCLK) —> Pin 12 on the Arduino (latch pivot)
Pin 14 (SER) —-> Pin 13 on the Arduino (data pin)

Pin 9, Pin fifteen on the right hand side remained unoccupied. Pin 9 never will exist used. Pin 15 volition be another output pivot (connected to LED). Now, we will connect 8 LED to the output pins to the 74HC595 shift register. Add together a 220 Ohm resistor with each LED to reduce the current. So the LED connections are :

Pin one —> LED1
Pivot 2 —> LED2
Pin 3 —> LED3
Pin 4 —> LED4
Pivot v —> LED5
Pivot 6 —> LED6
Pivot 7 —> LED7
Pin 15 –> LED8

This volition be the complete connection :

How To Connect 74HC595 Shift Register With Arduino

Upload this code to Arduino :

xiii

sixteen

int latchPin = 12 ;

int clockPin = xi ;

int dataPin = 13 ;

byte leds = 0 ;

int currentLED = 0 ;

void setup ( )

{

pinMode ( latchPin , OUTPUT ) ;

pinMode ( dataPin , OUTPUT ) ;

pinMode ( clockPin , OUTPUT ) ;

leds = 0 ;

}

void loop ( )

{

leds = 0 ;

if ( currentLED == 7 )

{

currentLED = 0 ;

}

else

{

currentLED ++ ;

}

bitSet ( leds , currentLED ) ;

digitalWrite ( latchPin , LOW ) ;

shiftOut ( dataPin , clockPin , LSBFIRST , leds ) ;

digitalWrite ( latchPin , High ) ;

filibuster ( 250 ) ;

}

Information technology will create a chaser like outcome.

I take shamelessly copied many things from Rob Carr (Twitter : @iamrastating) because I establish he written in almost easy fashion for the kids. I made the connection function probably more vivid. In adjacent guide, nosotros volition vary the lawmaking to create different effects.

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