Guys, In this project we will learn about 7 Segment Displays and how the Arduino 7 Segment Display Interface works with arduino. Okey,let's make it.
Components Required
| 1. | Arduino Uno | * 1 |
| 2. | Common Anode 7 Segment Display | * 1 |
| 3. | Resistors(220 ohm) | * 8 |
| 4. | Bread Board | * 1 |
| 5. | Jumper Wires | * 1 |
1. Arduino UNO * 1
2. ISD1820 Voice Recorder Module * 1
3. Speaker(8 Ohm) * 1
4. IR Sensor * 1
5. Jumper Wires * 1
Circuit Diagram
Program
void setup()
{
init();
/*your setup code here*/
}
void loop()
{
/*
* your loop code here
*
* use display(num, dp) to display num (0123456789ABCDEF)
* and the dot (if dp).
*
* you can turn off all the leds by writing display().
*/
}
void init()
{
pinMode(2, OUTPUT);
pinMode(3, OUTPUT);
pinMode(4, OUTPUT);
pinMode(5, OUTPUT);
pinMode(6, OUTPUT);
pinMode(7, OUTPUT);
pinMode(8, OUTPUT);
pinMode(9, OUTPUT);
}
void display(int n=-1, boolean dp)
{
digitalWrite(9, !dp);
if(num == 0)
{
digitalWrite(2, 0);
digitalWrite(3, 0);
digitalWrite(4, 0);
digitalWrite(5, 0);
digitalWrite(6, 0);
digitalWrite(7, 0);
digitalWrite(8, 1);
} else if(num == 1) {
digitalWrite(2, 1);
digitalWrite(3, 0);
digitalWrite(4, 0);
digitalWrite(5, 1);
digitalWrite(6, 1);
digitalWrite(7, 1);
digitalWrite(8, 1);
} else if(num == 2) {
digitalWrite(2, 0);
digitalWrite(3, 0);
digitalWrite(4, 1);
digitalWrite(5, 0);
digitalWrite(6, 0);
digitalWrite(7, 1);
digitalWrite(8, 0);
} else if(num == 3) {
digitalWrite(2, 0);
digitalWrite(3, 0);
digitalWrite(4, 0);
digitalWrite(5, 0);
digitalWrite(6, 1);
digitalWrite(7, 1);
digitalWrite(8, 0);
} else if(num == 4) {
digitalWrite(2, 1);
digitalWrite(3, 0);
digitalWrite(4, 0);
digitalWrite(5, 1);
digitalWrite(6, 1);
digitalWrite(7, 0);
digitalWrite(8, 0);
} else if(num == 5) {
digitalWrite(2, 0);
digitalWrite(3, 1);
digitalWrite(4, 0);
digitalWrite(5, 0);
digitalWrite(6, 1);
digitalWrite(7, 0);
digitalWrite(8, 0);
} else if(num == 6) {
digitalWrite(2, 0);
digitalWrite(3, 1);
digitalWrite(4, 0);
digitalWrite(5, 0);
digitalWrite(6, 0);
digitalWrite(7, 0);
digitalWrite(8, 0);
} else if(num == 7) {
digitalWrite(2, 0);
digitalWrite(3, 0);
digitalWrite(4, 0);
digitalWrite(5, 1);
digitalWrite(6, 1);
digitalWrite(7, 1);
digitalWrite(8, 1);
} else if(num == 8) {
digitalWrite(2, 0);
digitalWrite(3, 0);
digitalWrite(4, 0);
digitalWrite(5, 0);
digitalWrite(6, 0);
digitalWrite(7, 0);
digitalWrite(8, 0);
} else if(num == 9) {
digitalWrite(2, 0);
digitalWrite(3, 0);
digitalWrite(4, 0);
digitalWrite(5, 0);
digitalWrite(6, 1);
digitalWrite(7, 0);
digitalWrite(8, 0);
} else if(num == 10) {
digitalWrite(2, 0);
digitalWrite(3, 0);
digitalWrite(4, 0);
digitalWrite(5, 1);
digitalWrite(6, 0);
digitalWrite(7, 0);
digitalWrite(8, 0);
} else if(num == 11) {
digitalWrite(2, 1);
digitalWrite(3, 1);
digitalWrite(4, 0);
digitalWrite(5, 0);
digitalWrite(6, 0);
digitalWrite(7, 0);
digitalWrite(8, 0);
} else if(num == 12) {
digitalWrite(2, 0);
digitalWrite(3, 1);
digitalWrite(4, 1);
digitalWrite(5, 0);
digitalWrite(6, 0);
digitalWrite(7, 0);
digitalWrite(8, 1);
} else if(num == 13) {
digitalWrite(2, 1);
digitalWrite(3, 0);
digitalWrite(4, 0);
digitalWrite(5, 0);
digitalWrite(6, 0);
digitalWrite(7, 1);
digitalWrite(8, 0);
} else if(num == 14) {
digitalWrite(2, 0);
digitalWrite(3, 1);
digitalWrite(4, 1);
digitalWrite(5, 0);
digitalWrite(6, 0);
digitalWrite(7, 0);
digitalWrite(8, 0);
} else if(num == 15) {
digitalWrite(2, 0);
digitalWrite(3, 1);
digitalWrite(4, 1);
digitalWrite(5, 1);
digitalWrite(6, 0);
digitalWrite(7, 0);
digitalWrite(8, 0);
} else {
digitalWrite(2, 1);
digitalWrite(3, 1);
digitalWrite(4, 1);
digitalWrite(5, 1);
digitalWrite(6, 1);
digitalWrite(7, 1);
digitalWrite(8, 1);
}
}