Make with Karkhana

In this tutorial, we will learn how to interface digital sensors with Arduino . A sensor is a device which detects or measures a physical property and records, indicates or otherwise responds to it. Digital sensors give us output in the form of HIGH or LOW signal. When it detects a phenomenon it gives a HIGH output else a LOW output signal. Few examples of digital sensors are- IR Sensors, Digital Sound Sensors, Digital Temperature Sensors etc. We will interface an Infrared Sensor module.                                                  Working on an IR sensor. It basically works as an obstacle detector. Let us learn how to interface an IR (infrared) sensor. Components required: IR sensor module          1No. Arduino UNO               1No Connecting wires. Breadboard. Follow the below video for circuit connection reference. After making the circuit connections dump the code given below. int irpin = 2; int ledPin = 13; in

Since now we are well acquainted with LED’s let us learn how to control the switching using a push button. In this tutorial, we will learn how to use a push button. A push button is used to get control of the circuit. Components Required Resistors                           2Nos. 330ohms,10k(recommended) Pushbutton                        1No. LED                                  1No. Standard red LED Arduino UNO Breadboard Follow the video to make the circuit. After making the circuit it will look like Now dump the code given below int d=2; // chose the pin which you have connected to the output of push button void setup() { pinMode(2,INPUT); pinMode(13,OUTPUT); } void loop() { d=digitalRead(2); if(d==0) { digitalWrite(13,HIGH); } else { digitalWrite(13,LOW); } } Now the control is in your hands whenever you will press the button the led will be ON and when you release it, LED will go OFF. You can alter the control like                                  

Alright since now we know how to interface a LED let’s have some fun generating patterns with multiple LED. Components Required Resistor                    4 No. 330Ohms(Standard Red LED and 5V input supply) LEDs                        4 No. Arduino UNO          1No. Connecting wires Breadboard In this blog, we have generated a shifting glowing pattern of LEDs. For circuit, connections see below After building the circuit dump the code given below. int led1 = 1; int led2 = 2; int led3 = 3; int led4 = 4; void setup()  { pinMode(led1, OUTPUT); pinMode(led2, OUTPUT); pinMode(led3, OUTPUT); pinMode(led4, OUTPUT); } void loop() { digitalWrite(led1, HIGH); // turn the LED on (HIGH is the voltage level) delay(500); digitalWrite(led1, LOW); // turn the LED off by making the voltage LOW delay(500); digitalWrite(led2, HIGH); // turn the LED on (HIGH is the voltage level) delay(500); digitalWrite(led2, LOW); // turn the LED off by making the voltage LOW delay(500); d