All posts by : Gerrit Bussink

#include <Ultrasonic.h>
Ultrasonic ultrasonic(6,5);// 6 trig , 5 echo

const int buzzer = 7; // pin buzzer

void setup(){
pinMode(buzzer,OUTPUT);

}

void loop(){
int dist = ultrasonic.Ranging(CM);
if (dist < 100) {
tone(buzzer,1000);
delay(40);
noTone(buzzer);
delay(dist*4);
}
delay(100);
}

int laserPin = 10;

void setup ()
{
pinMode(laserPin, OUTPUT);
}

void loop () {
digitalWrite(laserPin, HIGH);
delay(100);
digitalWrite(laserPin, LOW);
delay(100);
}

/*Interfacing RGB LED with Arduino
* Author: Electrofun
* For more information visit us: www.electrofun.co.in
* Video explanation at: https://www.youtube.com/playlist?list=PLnDLZy2UodwHt3Z8bD6V8lsegmc2yGuMP
*/

//Defining variable and the GPIO pin on Arduino
int redPin= 5;
int greenPin = 6;
int bluePin = 7;

void setup() {
//Defining the pins as OUTPUT
pinMode(redPin, OUTPUT);
pinMode(greenPin, OUTPUT);
pinMode(bluePin, OUTPUT);
}
void loop() {
setColor(255, 0, 0); // Red Color
delay(1000);
setColor(0, 255, 0); // Green Color
delay(1000);
setColor(0, 0, 255); // Blue Color
delay(1000);
setColor(255, 255, 255); // White Color
delay(1000);
setColor(170, 0, 255); // Purple Color
delay(1000);
setColor(127, 127, 127); // Light Blue
delay(1000);
}
void setColor(int redValue, int greenValue, int blueValue) {
analogWrite(redPin, redValue);
analogWrite(greenPin, greenValue);
analogWrite(bluePin, blueValue);
}

https://create.arduino.cc/projecthub/muhammad-aqib/arduino-rgb-led-tutorial-fc003e