Introduction: Arduino Counter

Hey, guys, I am Sridhar Janardhan back with another tutorial.As I was passing by a signal I saw traffic signals with a counter beside so I wanted to create a counter of my own using an Arduino.to create this instructable you got to use an Arduino and a 7 segment led.if anyone finds difficulty in following any leave a comment below.

Step 1: Components Required:

the components required are

  • Arduino UNO.
  • Resistor - 220 Ω.
  • 7-segment LED.
  • jumper wires.
  • Breadboard.

Let's start interfacing.

Step 2: Adding 220 Ohm Resistor:

The 7 Segment led is placed on a breadboard as shown in the figure.Here we are going to add 220-ohm resistor.The top row and bottom row middle pin is a common pin.We need to connect this pin to the resistor leg as shown in the figure.

Step 3: Connecting Remaining Pins:

The remaining pin of the connection is as follows:

  • TOP pins(from left side) First pin to digital pin 8
  • Second pin to digital pin 9
  • Third pin to the resistor
  • Fourth pin to digital pin 7
  • Fifth pin to digital pin 6

Bottom pins(from left side)

  • First pin to digital pin 10
  • Second pin to digital pin11
  • Third pin to the resistor
  • Fourth pin to digital pin 12
  • Fifth pin to digital pin 3

Let's start coding.

Step 4: Coding:

int c = 12;

int d = 11;

int e = 10;

int g = 9;

int f = 8;

int a = 7;

int b = 6;

int chrono = 1000;

void zero(){

digitalWrite(a, LOW);

digitalWrite(b, LOW);

digitalWrite(c, LOW);

digitalWrite(d, LOW);

digitalWrite(e, LOW);

digitalWrite(f, LOW);

digitalWrite(g, HIGH); }

void one(){

digitalWrite(c, LOW);

digitalWrite(d, HIGH);

digitalWrite(e, HIGH);

digitalWrite(g, HIGH);

digitalWrite(f, HIGH);

digitalWrite(a, HIGH);

digitalWrite(b, LOW); }

void two(){

digitalWrite(c, HIGH);

digitalWrite(d, LOW);

digitalWrite(e, LOW);

digitalWrite(g, LOW);

digitalWrite(f, HIGH);

digitalWrite(a, LOW);

digitalWrite(b, LOW); }

void three(){

digitalWrite(c, LOW);

digitalWrite(d, LOW)

; digitalWrite(e, HIGH);

digitalWrite(g, LOW);

digitalWrite(f, HIGH);

digitalWrite(a, LOW);

digitalWrite(b, LOW); }

void four(){

digitalWrite(c, LOW);

digitalWrite(d, HIGH);

digitalWrite(e, HIGH);

digitalWrite(g, LOW);

digitalWrite(f, LOW);

digitalWrite(a, HIGH);

digitalWrite(b, LOW); }

void five(){

digitalWrite(a, LOW);

digitalWrite(b, HIGH);

digitalWrite(c, LOW);

digitalWrite(d, LOW);

digitalWrite(e, HIGH);

digitalWrite(f, LOW);

digitalWrite(g, LOW); }

void six(){

digitalWrite(a, HIGH);

digitalWrite(b, HIGH);

digitalWrite(c, LOW);

digitalWrite(d, LOW);

digitalWrite(e, LOW);

digitalWrite(f, LOW);

digitalWrite(g, LOW); }

void seven(){

digitalWrite(a, LOW);

digitalWrite(b, LOW)

; digitalWrite(c, LOW);

digitalWrite(d, HIGH);

digitalWrite(e, HIGH);

digitalWrite(f, HIGH);

digitalWrite(g, HIGH);

}

void eight(){

digitalWrite(c, LOW);

digitalWrite(d, LOW);

digitalWrite(e, LOW);

digitalWrite(g, LOW);

digitalWrite(f, LOW);

digitalWrite(a, LOW);

digitalWrite(b, LOW); }

void nine(){

digitalWrite(a, LOW);

digitalWrite(b, LOW);

digitalWrite(c, LOW);

digitalWrite(d, LOW);

digitalWrite(e, HIGH);

digitalWrite(f, LOW);

digitalWrite(g, LOW); }

void setup() {

pinMode(c, OUTPUT);

pinMode(d, OUTPUT);

pinMode(e, OUTPUT);

pinMode(g, OUTPUT);

pinMode(f, OUTPUT);

pinMode(a, OUTPUT);

pinMode(b, OUTPUT); }

void loop() {

zero();

delay(chrono);

one();

delay(chrono);

two();

delay(chrono);

three();

delay(chrono);

four();

delay(chrono);

five();

delay(chrono);

six();

delay(chrono);

seven();

delay(chrono);

eight();

delay(chrono);

nine();

delay(chrono);

}

Step 5: Output

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Bio: I am an electronic hobbyist on Arduino, Photon, Raspberry Pi and common electronics.A passionate cook.Any assistance in electronics and web development feel free ... More »
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