Introduction: Arduino LED Dice Roller
This dice roller is a lot of fun and refreshes every 5 seconds.
Step 1: Place 7 LED's
It's best to make the LED's fit the pattern so it will look like a real die in the end. PAY ATTENTION TO THE POLARITIES!!!
Step 2: Connect Each LED to GND Through a 220 Ohm Resistor
Pay close attention to polarities.
Step 3: Add the Arduino to the Circuit and Connect the LED's
You can use any version of Arduino; this example used the Uno R3.
LED 1 - Digital Pin 2
LED 2 - Digital Pin 3
LED 3 - Digital Pin 4
LED 4 - Digital Pin 5
LED 5 - Digital Pin 6
LED 6 - Digital Pin 7
LED 7 - Digital Pin 8
DON'T FORGET TO CONNECT THE ARDUINO GND
Step 4: Push the Following Code to the Arduino
int led1 = 2;
int led2 = 3;
int led3 = 4;
int led4 = 5;
int led5 = 6;
int led6 = 7;
int led7 = 8;
void setup() {
pinMode(led1, OUTPUT);
pinMode(led2, OUTPUT);
pinMode(led3, OUTPUT);
pinMode(led4, OUTPUT);
pinMode(led5, OUTPUT);
pinMode(led6, OUTPUT);
pinMode(led7, OUTPUT);
Serial.begin(9600);
}
void loop(){
long randomnumber;
randomnumber = random(0, 7);
randomnumber;
if(randomnumber == 1){
Serial.println("1");
one();
}
if(randomnumber == 2){
Serial.println("2");
two();
}
if(randomnumber == 3){
Serial.println("3");
three();
}
if(randomnumber == 4){
Serial.println("4");
four();
}
if(randomnumber == 5){
Serial.println("5");
five();
}
if(randomnumber == 6){
Serial.println("6");
six();
}
}
void one(){
digitalWrite(led1, LOW);
digitalWrite(led2, LOW);
digitalWrite(led3, LOW);
digitalWrite(led4, HIGH);
digitalWrite(led5, LOW);
digitalWrite(led6, LOW);
digitalWrite(led7, LOW);
again();
}
void two(){
digitalWrite(led1, HIGH);
digitalWrite(led2, LOW);
digitalWrite(led3, LOW);
digitalWrite(led4, LOW);
digitalWrite(led5, LOW);
digitalWrite(led6, LOW);
digitalWrite(led7, HIGH);
again();
}
void three(){
digitalWrite(led1, HIGH);
digitalWrite(led2, LOW);
digitalWrite(led3, LOW);
digitalWrite(led4, HIGH);
digitalWrite(led5, LOW);
digitalWrite(led6, LOW);
digitalWrite(led7, HIGH);
again();
}
void four(){
digitalWrite(led1, HIGH);
digitalWrite(led2, LOW);
digitalWrite(led3, HIGH);
digitalWrite(led4, LOW);
digitalWrite(led5, HIGH);
digitalWrite(led6, LOW);
digitalWrite(led7, HIGH);
again();
}
void five(){
digitalWrite(led1, HIGH);
digitalWrite(led2, LOW);
digitalWrite(led3, HIGH);
digitalWrite(led4, HIGH);
digitalWrite(led5, HIGH);
digitalWrite(led6, LOW);
digitalWrite(led7, HIGH);
again();
}
void six(){
digitalWrite(led1, HIGH);
digitalWrite(led2, HIGH);
digitalWrite(led3, HIGH);
digitalWrite(led4, LOW);
digitalWrite(led5, HIGH);
digitalWrite(led6, HIGH);
digitalWrite(led7, HIGH);
again();
}
void again(){
while(1){
delay(5000);
loop();
}
}
