Week #7 - Journal

Ideation

Tell us about your assignment's idea for this week. Why do you care about this idea? What inspired you? (Please include images or links to sources of inspiration)

Smart fan

Smart fan is advice which used ultrasonic sensor to know any person has enter to the room then the fan is work automatic.

The input used are:

Ultrasonic sensor
Switch

The output used are:

Fan
LED light

Tool Chain

Which software/machines/materials did you use in the assignment? Why?

I used Arduino IDE to write the code.

I used ultrasonic, switch, LED, fan, and breadboard.

I used Arduino as a brain.

Arduino IDE

Tools

Cardboard

Design/Preparation Process

Explain the design and/or preparation process of your assignment. How did you use the tool or software to design and/or prepare your assignment before fabrication/implementation?

I used Arduino IDE to write the code on which the DC fan works when an object less than a distance of 50 cm far is entered in front of the ultrasonic sensor with a click of the switch. Also, the LED light works with the fan.

Explain the code:

First: define numbers, integers, and variables.

Second: make void setup to define input and outputs (switch and echo pin of ultrasonic are inputs, while motor, LED, and trig pin of ultrasonic sensor are outputs). Also, starts serial communication.

Third: Make void loop: define equation and distances of ultrasonic sensor which can sense when thing approximate distance 50 cm or less. If ultrasonic sonic sense and switch on the LED and motor on. Else LED off and motor off.

Arduino code:

// defines pins numbers

const int trigPin = 9;

const int echoPin = 10;

// defines variables

long duration;

int distance;

void setup() {

pinMode(trigPin, OUTPUT); // Sets the trigPin as an Output

pinMode(echoPin, INPUT); // Sets the echoPin as an Input

pinMode(7, INPUT_PULLUP); //switch

pinMode(2, OUTPUT); //motor

pinMode(8, OUTPUT); //LED

Serial.begin(9600); // Starts the serial communication

}

void loop() {

int f = digitalRead(7);

// Clears the trigPin

digitalWrite(trigPin, LOW);

delayMicroseconds(2);

// Sets the trigPin on HIGH state for 10 micro seconds

digitalWrite(trigPin, HIGH);

delayMicroseconds(10);

digitalWrite(trigPin, LOW);

// Reads the echoPin, returns the sound wave travel time in microseconds

duration = pulseIn(echoPin, HIGH);

// Calculating the distance

distance = duration * 0.034 / 2;

// Prints the distance on the Serial Monitor

Serial.print("Distance: ");

Serial.println(distance);

if (distance < 50 && f == HIGH) {

digitalWrite(8, HIGH);

digitalWrite(2, HIGH);

}

else {

digitalWrite(8, LOW);

digitalWrite(2, LOW);

}

Wiring of the system in TinkerCAD

Arduino. INO Code

Development/Implementation Process

Explain the development/implementation process of your assignment. How did you use the machine/tool to manufacture or implement the design of your assignment?

Connect Ultrasonic sensor to the Arduino

Connect switch to thr Arduino

Connect the fan to the Arduino

Connect the LED to Arduino

Snapping during cardboard

Project cardboard

Video of working of smart fan

Community of Learning

Did you ask for feedback? What are the ideas that others have contributed or suggested? What was someone else’s idea that you built upon? How did you help your peers? How did your peers help you?

During this week, I worked with the team which made a great effort and we helped each other. We Build a Smart Home System using Arduino.

The DC fan and DC lamp working in two modes:

Manual mode using pushbuttons.
Automatic mode using DHT and LDR sensors.

Overcoming Challenges

When you got stuck, what/who did you turn to? At what point did you have to pause to research or learn more before moving on? What are some mistakes, pitfalls, or challenges that others can avoid if they were doing this assignment?

When I got stuck, I asked Ahmed or Farida to help me.

Challenge

When I did my assignment, I faced a challenge during connecting the switch to Arduino. I forgot to connect the put PULLUP input in Arduino code. So after checking the problem, I write INPUT_PULLUP to the code of the Arduino.

We can avoid this problem when we do the assignment.

Final Project

How can you use the skills and knowledge that you've acquired this week in your final project?

Focusing on how to combine multi sensors and multi outputs to the Arduino are the skills and knowledge that I have acquired this week in my final project.

WOW!

What is the coolest thing that you've learned this week? What is something that you will never forget from this week?

The coolest thing I have learned this week is combining multi-inputs and multi outputs to the Arduino.

Revision jumpers and trouble-shooting in general are something that I will never forget from this week.

Weekly Digest [OPTIONAL]

Tell us about any other cool things that you've made this week: in the Hands-on activity, tutorial examples, exercises, or any other cool mini-project that you tried out aside from the assignment.

Assignment Design Files