Shift Register 74hc595 With Arduino Uno

Made by hIOTron / Productivity / IoT

About the project

Let's see how to use shift register with Arduino uno

Project info

Difficulty: Moderate

Platforms: Arduino

Estimated time: 4 days

License: GNU General Public License, version 3 or later (GPL3+)

Items used in this project

Hardware components

	74HC595 IC	x 1
	Resistor 220 ohm	x 1
	connecting pins	x 1
	Arduino uno board	x 1

Hand tools and fabrication machines

Arduino nightly

x 1

Story

About Project

A shift register chip gats data from the UNO board serially and provides output in an 8-bit parallel configuration.

To connect the shift register to Arduino UNO first we require to set any three pins of UNO as output. Then we require to attach the digital pin, clock pin as well as latch pin to these three output pins. After that, we require to tell the UNO which pin of the chip is attached to the UNO board pins.

Disable latch, this indicates the chip not to display output for now.

For eight times we will transfer data with clock serially, so clock high low-data-clock low- and so on.

Enable latch, which will indicate the chip to show eigeight-bitht bit data.

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Code

Run a Program

// The setup function runs once when you press reset or power the board

volatile int i=0;

void setup()

{

                pinMode(2, OUTPUT);   // sets the pin2 as output

                pinMode(1, OUTPUT); // sets the pin1 as output

                pinMode(0, OUTPUT); // sets the pin0 as output

}

void loop()

{

                for (int i=0;i<255;i++) //if binary count is less than 255

                {

                                digitalWrite(2,HIGH);

                                shiftOut(0,1,2,i); //send eight bit data serially for each time there is a increment

                                digitalWrite(2,LOW);

                                delay(500); //wait for half a second

                }             

}