The LEDs' race

For this project, I used 15 LEDs, 5 of each color (blue, white, and green). Every 3 LEDs (one from each color) are organized in a series row and connected to one resistor of 220 ohms. There are three buttons and each of which is connected to a 10K resistor. The switches are programmed to turn on the sequences in three different ways. The first button turns on the lights starting from bottom to top, and the second button does the opposite of that, it turns on the series from top to bottom. The last button randomly turns on the sequences.

Figure 1 - A picture of the work

Figure 2 -  Schematic of the board

Figure 3 - A sketch of the wiring 

Figure 4 - Video of how it works

	const int button1Pin = 3;
	const int button2Pin = 4;
	const int button3Pin = 5;
	const int row1Pin = 6;
	const int row2Pin = 7;
	const int row3Pin = 8;
	const int row4Pin = 9;
	const int row5Pin = 10;
	// the setup function runs once when you press reset or power the board
	void setup() {
	// initialize digital pin LED_BUILTIN as an output.
	pinMode(row1Pin, OUTPUT);
	pinMode(row2Pin, OUTPUT);
	pinMode(row3Pin, OUTPUT);
	pinMode(row4Pin, OUTPUT);
	pinMode(row5Pin, OUTPUT);
	pinMode(button1Pin, INPUT);
	pinMode(button2Pin, INPUT);
	pinMode(button3Pin, INPUT);
	Serial.begin(9600);
	}
	// the loop function runs over and over again forever
	void loop() {
	int button1State = digitalRead(button1Pin);
	Serial.println(button1State);
	//if(buttonState == 0 && buttonState == 1)
	if(button1State == 1) {
	//do this stuff
	Serial.println("Push");
	digitalWrite(row1Pin, HIGH);
	delay(500);
	digitalWrite(row2Pin, HIGH);
	delay(500);
	digitalWrite(row3Pin, HIGH);
	delay(500);
	digitalWrite(row4Pin, HIGH);
	delay(500);
	digitalWrite(row5Pin, HIGH);
	delay(500);
	}
	else{
	digitalWrite(row1Pin, LOW);
	digitalWrite(row2Pin, LOW);
	digitalWrite(row3Pin, LOW);
	digitalWrite(row4Pin, LOW);
	digitalWrite(row5Pin, LOW);
	}
	int button2state = digitalRead(button2Pin);
	Serial.println(button2state);
	if(button2state == 1) {
	//do this stuff
	Serial.println("Push");
	digitalWrite(row5Pin, HIGH);
	delay(500);
	digitalWrite(row4Pin, HIGH);
	delay(500);
	digitalWrite(row3Pin, HIGH);
	delay(500);
	digitalWrite(row2Pin, HIGH);
	delay(500);
	digitalWrite(row1Pin, HIGH);
	delay(500);
	}
	else{
	digitalWrite(row1Pin, LOW);
	digitalWrite(row2Pin, LOW);
	digitalWrite(row3Pin, LOW);
	digitalWrite(row4Pin, LOW);
	digitalWrite(row5Pin, LOW);
	}
	int button3state = digitalRead(button3Pin);
	Serial.println(button3state);
	if(button3state == 1) {
	//do this stuff
	Serial.println("Push");
	digitalWrite(row3Pin, HIGH);
	delay(500);
	digitalWrite(row1Pin, HIGH);
	delay(500);
	digitalWrite(row4Pin, HIGH);
	delay(500);
	digitalWrite(row2Pin, HIGH);
	delay(500);
	digitalWrite(row5Pin, HIGH);
	delay(500);
	}
	else{
	digitalWrite(row1Pin, LOW);
	digitalWrite(row2Pin, LOW);
	digitalWrite(row3Pin, LOW);
	digitalWrite(row4Pin, LOW);
	digitalWrite(row5Pin, LOW);
	}
	}

view raw Multi Switch hosted with ❤ by GitHub

Figure 5 - Code Blocks of the used coding