Arduino lessons for beginners

Know the structure and layout of the UNO. 

Play with your first code and interfacing.

Copy this program:

// Pin 12 is used in this program.

int led = 12;

void setup() { 

// initialize the digital pin as an output.

pinMode(led, OUTPUT); 

}

// the loop routine runs over and over again forever:

void loop() {

digitalWrite(led, HIGH); // turn the LED on (HIGH is the voltage level)

delay(1000); // wait for a second

digitalWrite(led, LOW); // turn the LED off by making the voltage LOW

delay(1000); // wait for a second

}

You can use same code as above. 

 This activity will facilitate understanding of the following things: - Interfacing of servo motors - Controlling angle of the servos - Changing speed of the servo motor - Delays - Applications of servo motors .

Copy this code:

// Use and control of a servo motor.

// Box of Science

#include <Servo.h>

Servo myservo; // create servo object to control a servo

// a maximum of eight servo objects can be created

int pos = 0; // variable to store the servo position

void setup()

{

myservo.attach(9); // attaches the servo on pin 9 to the servo object

}

void loop()

{

for(pos = 0; pos < 180; pos += 1) // goes from 0 degrees to 180 degrees

{ // in steps of 1 degree

myservo.write(pos); // tell servo to go to position in

// variable 'pos'

delay(15); // waits 15ms for the servo to reach

// the position

}

for(pos = 180; pos>=1; pos-=1) // goes from 180 degrees to 0 degrees

{ 

myservo.write(pos); // tell servo to go to position in

// variable 'pos'

delay(15); // waits 15ms for the servo to reach

// the position

}

}