Basic Arduino Workshop

8/17/2019 Basic Arduino Workshop

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BASIC ARDUINO

WORKSHOP

By :

Yogi Hamdani S.T., B.Eng.

[email protected]


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Workshop Content

• Introduction to Arduino

• Arduino Programming (hands-on)

•

System Development

3/10/2016 2BASIC ARDUINO WORKSHOP - YOGI HAMDANI


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INTRODUCTION TO

ARDUINO


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What is Arduino?

• Microcontroller board contains on board

power supply, USB port to communicate with

PC, and microcontroller chip.

• Open source hardware


INPUT FROMSENSORS

PROCESSING INMICROCONTROLLER

OUTPUT TOACTUATORS


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Arduino Boards



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Arduino Mega

• 54 digital input/output pins

(of which 14 can be used as PWM outputs)

• 16 analog inputs

• USB connection



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Analog / Digital

• All physical quantities are analog.

• Analog quantity takes any value between its

minimum and maximum value.

(in Arduino 0-255 / 8 bits)

• Digital quantity takes specific levels of value

with specific offset / on-off condition.

(in Arduino 0-1)



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ARDUINO

PROGRAMMING

Program Download

http://arduino.cc/en/Main/Software


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Programming Platform

• Integrated

Development

Environment (IDE)

• C language

programming



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Sample Program (Built-In LED)

1. Open Arduino IDE

2. Click File ->

Examples ->

01.Basics ->

Blink



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P r o g r a m S t

r u c t u r e



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P r o g r a m S t

r u c t u r e



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P r o g r a m S t

r u c t u r e



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Upload Program

1. Check Connection

Click Tool ->

Select Board,

Select PortCheck on bottom

2. Click Upload



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Basic Syntax – Digital I/O

1. pinMode(x,OUTPUT); for pin x as output

pinMode(y,INPUT); for pin y as input

2. digitalWrite(x,HIGH); set pin x to ON (1)

digitalWrite(x,LOW); set pin x to OFF (0)

3. digitalRead(y); read pin y status

4. delay(z); set delay for z ms



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Data Types and Statement

• Integer: declare variable as integer.

example: int x = 10;

• Floating Point: declare variable as numbers .

example: float x = 10.50;

• Character: declare variable as single character.

example: char z = ‘y’;

• String: declare variable as multiple characters.example: String z = “xyz”;



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Operators

• Math Operators: (+,-,*,/,%,^)

example:

int x = 5;

int y = 7;int z = x + y;

• Logic Operators: (==, !=, &&, ||)

• Comparison Operators: (,=)



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IF Statement

Example 1:if(condition 1){

do something;}


Example 2:

if(condition 1)

{

do something;}

else

{

do something;}

Example 3:if(condition 1)

{

do something;

}else if(condition 2)

{

do something;

}

else

{

do something;

}


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Loop Statement

Do… while

example:

do

{do something;

}

while(condition)


Whileexample:while(condition)

{ do something;}

Forexample:for(int i=0; i


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Serial Monitor



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Exercise

• Turn LED ON when switch is pressed.

• Print status to serial monitor.


Ground Pin

Digital Pin


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Wiring



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P

r o g r a m

m i n g



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Program Code

int LED = 12;int Switch = 8;

void setup()

{

Serial.begin(9600);

pinMode(LED,OUTPUT);

pinMode(Switch,INPUT);

}


void loop(){

digitalWrite(LED,LOW);

if(digitalRead(Switch) == HIGH)

{

Serial.println("ON");

digitalWrite(LED,HIGH);

}

Serial.println("OFF");

delay(500);

}


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Questions ???


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SYSTEM DEVELOPMENT(Reverse Parking Sensor System)


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How it works?

1. Sensors are activated and sense the distance.

2. Controller process the data.

3. Notify driver with buzzer / LED.



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Equipments

INPUT:

- Switch

- Ping Sensor


OUTPUT:

- Buzzer

- LED


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Input Analysis

1. System is activated by switch.2. Ping sensor send ultrasonic wave via trigger pin.

3. If hit an object, the reflected wave may be received

through echo pin.



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Ping Sensor



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Input Analysis

4. Ping sensor gives time duration (in µs) betweentransmission and receiving reflected wave.

5. Analyze time duration into distance measurement.



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pulseIn Function

int echo = 8

int time_duration;

void setup()

{

pinMode(echo, INPUT);}

void loop()

{

time_duration = pulseIn(echo, HIGH);}



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Output Requirement

1. Buzzer rings more intense as distance is closer.

2. LED blinks / turns on longer as distance is closer.

3. Give information about distance via serial monitor.


Distance Left Buzzer LED Blue LED Red

>= 20 cm Not Ring ON OFF

>= 15 cm && < 20 cm Ring A ON Blink

>= 10 cm && < 15 cm Ring B ON Blink>= 5 cm && < 10 cm Ring C ON ON

< 5 cm Ring D ON ON


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PROGRAMMING

PLAY TIME

Basic Arduino Workshop

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