Introduction: 7-segment Display With Linkit One

Picture of 7-segment Display With Linkit One


In this tutorial I will tell about displaying 0-9 digits on 7 Segment Display using Linkit one.7 segment display is very useful and effective way to represent numeric values and it is actually a 8-segment display due to presence of a point on right side of 8.

Step 1: Things Required

Picture of Things Required

We need :-

  • Linkit one
  • jumper wires
  • 7-segment display
  • 220 ohm resistors
  • Breadboard

Step 2: Code

Picture of Code

int a = 2; //For displaying segment "a"int b = 3; //For displaying segment "b"

int c = 4; //For displaying segment "c" int d = 5; //For displaying segment "d" int e = 6; //For displaying segment "e" int f = 8; //For displaying segment "f" int g = 9; //For displaying segment "g"void setup() { pinMode(a, OUTPUT); //A pinMode(b, OUTPUT); //B pinMode(c, OUTPUT); //C pinMode(d, OUTPUT); //D pinMode(e, OUTPUT); //E pinMode(f, OUTPUT); //F pinMode(g, OUTPUT); //G }void displayDigit(int digit) { //Conditions for displaying segment a if(digit!=1 && digit != 4) digitalWrite(a,HIGH); //Conditions for displaying segment b if(digit != 5 && digit != 6) digitalWrite(b,HIGH); //Conditions for displaying segment c if(digit !=2) digitalWrite(c,HIGH); //Conditions for displaying segment d if(digit != 1 && digit !=4 && digit !=7) digitalWrite(d,HIGH); //Conditions for displaying segment e if(digit == 2 || digit ==6 || digit == 8 || digit==0) digitalWrite(e,HIGH); //Conditions for displaying segment f if(digit != 1 && digit !=2 && digit!=3 && digit !=7) digitalWrite(f,HIGH); if (digit!=0 && digit!=1 && digit !=7) digitalWrite(g,HIGH); } void turnOff() { digitalWrite(a,LOW); digitalWrite(b,LOW); digitalWrite(c,LOW); digitalWrite(d,LOW); digitalWrite(e,LOW); digitalWrite(f,LOW); digitalWrite(g,LOW); }

void loop() { for(int i=0;i<10;i++) { displayDigit(i); delay(1000); turnOff(); } }

Step 3: Arrangements

Picture of Arrangements

This is very simple you can check the picture for better understanding.The first argument is used to display number and the second one is for point.It is basically a set of 8 light emitting diodes with common negative terminal as we provide + voltage from arduino digital pins.

Step 4: Done!!

Picture of Done!!

You can use this for displaying numbers on a 7-segment display and use it in your projects.

Best of luck!!

Thank you!!


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