Introduction: Interfacing Seven Segment Display on TinkerCad

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The 7-segment display, also written as “seven segment display”, consists of seven LEDs (hence its name) arranged in a rectangular fashion as shown. Each of the seven LEDs is called a segment because when illuminated the segment forms part of a numerical digit (both Decimal and Hex) to be displayed. An additional 8th LED is sometimes used within the same package thus allowing the indication of a decimal point, (DP) when two or more 7-segment displays are connected together to display numbers greater than ten.

Step 1: Components You Need

components you need to make the project is:

1. Arduino

2. 7 Segment display

3. Resistor(220ohm)

Step 2: 7 Segment Display Pinout

Each one of the seven LEDs in the display is given a positional segment with one of its connection pins being brought straight out of the rectangular plastic package. These individually LED pins are labelled from a through to g representing each individual LED. The other LED pins are connected together and wired to form a common pin.

So by forward biasing the appropriate pins of the LED segments in a particular order, some segments will be light and others will be dark allowing the desired character pattern of the number to be generated on the display. This then allows us to display each of the ten decimal digits 0 through to 9 on the same 7-segment display.

The displays common pin is generally used to identify which type of 7-segment display it is. As each LED has two connecting pins, one called the “Anode” and the other called the “Cathode”, there are therefore two types of LED 7-segment display called: Common Cathode (CC) and Common Anode (CA).

Step 3: Circuit Diagram

I have made this 7 segment display as common cathode. You have to change this setting when you will be working on tinkerCad just click on the 7 segment display and choose common cathode option to run. You can also choose common anode for that you have connect the centre common pin of display to 5v and you have to give opposite commands in the code also. So,I recommend you to make it common cathode and copy the code from below and complete your project.

a= 11;
b=12;

c= 2;

d =3;

e = 6;

f = 9;

g = 10;

Step 4: Uploading the Code to Arduino

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Copy the code :

<p>int a= 11;<br>int b=12;
int c= 2;
int d =3;
int e = 6;
int f = 9;
int g = 10;</p><p>void setup()
{
  pinMode(a, OUTPUT);
  pinMode(b, OUTPUT);
  pinMode(c, OUTPUT);
  pinMode(d, OUTPUT);
  pinMode(e, OUTPUT);
  pinMode(f, OUTPUT);
  pinMode(g, OUTPUT);
  
}
void two()
{
 digitalWrite(a,HIGH);
  digitalWrite(b,HIGH);
   digitalWrite(c,LOW);
  digitalWrite(d,HIGH);
   digitalWrite(e,HIGH);
  digitalWrite(f,LOW);
   digitalWrite(g,HIGH);
  delay(1000);
}
void three()
{
  digitalWrite(a,HIGH);
  digitalWrite(b,HIGH);
   digitalWrite(c,HIGH);
  digitalWrite(d,HIGH);
   digitalWrite(e,LOW);
  digitalWrite(f,LOW);
   digitalWrite(g,HIGH);
  delay(1000);
}
void four()
{
  digitalWrite(a,LOW);
  digitalWrite(b,HIGH);
   digitalWrite(c,HIGH);
  digitalWrite(d,LOW);
   digitalWrite(e,LOW);
  digitalWrite(f,HIGH);
   digitalWrite(g,HIGH);
  delay(1000);
}
void five()
{
  digitalWrite(a,HIGH);
  digitalWrite(b,LOW);
   digitalWrite(c,HIGH);
  digitalWrite(d,HIGH);
   digitalWrite(e,LOW);
  digitalWrite(f,HIGH);
   digitalWrite(g,HIGH);
  delay(1000);
}
void six()
{
  digitalWrite(a,HIGH);
  digitalWrite(b,LOW);
   digitalWrite(c,HIGH);
  digitalWrite(d,HIGH);
   digitalWrite(e,HIGH);
  digitalWrite(f,HIGH);
   digitalWrite(g,HIGH);
  delay(1000);
}
void seven()
{
  digitalWrite(a,HIGH);
  digitalWrite(b,HIGH);
   digitalWrite(c,HIGH);
  digitalWrite(d,LOW);
   digitalWrite(e,LOW);
  digitalWrite(f,LOW);
   digitalWrite(g,LOW);
  delay(1000);
}
void eight()
{
  digitalWrite(a,HIGH);
  digitalWrite(b,HIGH);
   digitalWrite(c,HIGH);
  digitalWrite(d,HIGH);
   digitalWrite(e,HIGH);
  digitalWrite(f,HIGH);
   digitalWrite(g,HIGH);
  delay(1000);
}
void nine()
{
  digitalWrite(a,HIGH);
  digitalWrite(b,HIGH);
   digitalWrite(c,HIGH);
  digitalWrite(d,LOW);
   digitalWrite(e,LOW);
  digitalWrite(f,HIGH);
   digitalWrite(g,HIGH);
  delay(1000);
}
  void zero()
{
  digitalWrite(a,HIGH);
  digitalWrite(b,HIGH);
   digitalWrite(c,HIGH);
  digitalWrite(d,HIGH);
   digitalWrite(e,HIGH);
  digitalWrite(f,HIGH);
   digitalWrite(g,LOW);
  delay(1000);
}</p><p>void loop()
{
 zero();
  // one
  digitalWrite(a,LOW);
  digitalWrite(b,HIGH);
   digitalWrite(c,HIGH);
  digitalWrite(d,LOW);
   digitalWrite(e,LOW);
  digitalWrite(f,LOW);
   digitalWrite(g,LOW);
  delay(1000);
  two();
  three();
  four();
  five();
  six();
  seven();
  eight();
  nine();
 
}</p>

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