Final Project Journal

Project Ideation

Tell us about the idea of your project. Why do you care about this? What were you inspired by? Include images and videos of similar projects

Project Idea: I want to build (A ROVER KIT teaching kids and Computer Programming), coding KIT toy for girls and boys. Powered by a tangible programming language. It's super fun and super intuitive.

Kit Rover can make specific movements due to a (sequence of programming blocks) and tell the child if he reaches the target or faces an obstacle, and tell him if he uses a good coding sequence or not (Through LCD Screen)

I care about it as:

-It's non-prescriptive - MELO gives children the ability to solve problems within the world they create. This gives them the freedom to express their creativity and aptitudes, unconstrained by the challenges of literacy, or the distractions of a screen.

-It's child-centered - All they need to get started is a nudge in understanding that blocks = actions. After this point, even the discovery of what each block does can be led by the child, leaving adults to observe and only help when needed.

-It's auto-didactic - Solving problems with the blocks is about trial and error. Once a sequence is sent to MELO, the result is immediate and non-abstract, giving children concrete grounds on which to self-correct without adult intervention. Just change the blocks and go again.

It's designed for scaffolding: When a problem is too complex, the right sequence is easily pooled from the collective knowledge of children in the play session. Each child can in turn add a block, or a suggestion, layering in their individual competence to the solution in small steps.

I inspired by the idea through research, and I found this idea on (Kickstarter & primo).

Project Construction

2. Explain the CAD process of your project. How did you use the software to design your project? (List the softwares/tools/materials...etc that you used)

I used "Fusion 360"

I imagined the design in my mind, then I sketched it using paper and pen.
I opened the fusion 360 software
I Sketched the parts of the design on a new sketch on the software (using the tools that I have learned from the Diploma) (Start with the base then the double roof and (front & Back) the the sides).
After finishing the sketch, I extruded the parts to turn them into 3d parts (Distance 3 mm, the thickness of plywood)
I joined and assembled the parts of the design together to show the final design of the project, and to notice if there is any problem with the dimensions before fabrication.(The parts of my model assembled together using screws and nuts in order to I designed a T-Sluts in it).
I Downloaded the CAD Components the i will use in my project (Arduino, breadBoard, Motors, else) form (GRABCAD) and i uploaded them to fusion 360 then i inserted them in my project.
i jointed all the components in suitable places then i project the nail holes to the construction parts and i designed some of mounting parts to fixed the components.
After making sure that all is ok. I exported the file as Dxf file.
I opened (Laser Works V6 )
I imported the Stand Design file to the software.
I fit the dimensions and the place of the design
I Prepared the setting of the cutting (cut speed 25, power 65

scan engraving speed 300, power 25 )

Here we have the Contruction parts of the KIT

Discusion of the CAD Design Process and Sequence

3. Explain the fabrication process of your project. How did you use the machine to fabricate your project? (List the softwares/tools/materials...etc that you used)

I used the" laser works " program to prepare my 2D parts for cutting
After I exported the sketch file from fusion 360 as DXF file, I import them on the laser work program to the computer of the laser cutting machine.
check if there is any overlap to remove it.
I set the properties of the cutting operations (cut speed is 25 power is 65 RED color, the scan speed is 300 power is 25 Black COLOUR )
Then I export the file in LDR and download it to the laser cutting machine.
file.dxf to the memory of the machine.
I placed a plywood sheet on the machine(3mm wood sheet 30*15cm).
I choose the starting point.
Start the laser cutting
I have to check the scope of the machine and trak the frame.
Then I pressed the file option then choose my file and pressed enter and then pressed run.
Finally, I calculated the total work time on the machine and told the specialist about it.

WhatsApp Video 2021-03-08 at 6.09.42 PM.mp4

WhatsApp Video 2021-03-08 at 6.11.47 PM.mp4

Fabrication 1

Fabrication 2

After Cutting :-

I start with making the construction blocks
I Collected all the parts of the blocks then i set the reisotrs and connected with he copper tape and finally i connected all the parts by douple face tape.
then i constructed the parts of the rover and i mounted the components then i make the wiring connections.

Project Electronics & Power Management

4. Describe your electronic circuit. What are the input and action components? What is the function of each? How do the components integrate together to form your smart system? (List the softwares/tools/components...etc that you used)

the electronic circuit consists of input and action components :-

the input components :-

1. Push Button (Toggle start \ stop making the functions of moving the motors)

2.Controlling blocks (Resistors with different values, each value make the analog input read a certain value then due to this value a certian movement of the motor will be)

the Sensing components :-

1. Ultrasonic Sensor (To measure the distance and sense and avoid obstacles then light one of the 3 LEDS due to the distance of the obstacle).

the Action components :-

DC motors Make movement, (Forward, Right, Left)
LEDs Emit Light,
LCD Screen will write messages.

the Other components :-

breadboard (make electrical connection between the components)
arduino UNO (micro controller)
Jumpers ( males & females) used to connect components with each others.
7V adaptor for powering
Resistors

(the rover will make a function due to the blocks of resistors the press the push button the motors will make a specific movemets due to this resisotrs and the lcd screen will ound the turns and write messages at the same time the ultrasonic sensor detect if there is any obstacle and light led.. thee arduino control and process all the data and the integration of all the components.)

5. What is your power source? How did you select the suitable power source for your project? (List the softwares/tools/components...etc that you used)

After Searching about all the data sheets of the components to know about the suitable voltage and amperage i found :-

LED :

Forward Current (IF): 30mA
Forward Voltage (VF): 1.8V to 2.4V

L298N Motor Driver Module

Driver Voltage: 5-35V
Driver Current:2A

16x2 LCD Module

Operating Voltage is 4.7V to 5.3V
Current consumption is 1mA without backlight

HC-SR04 Ultrasonic Sensor

Operating voltage: +5V
Operating Current: <15mA

The Arduino operating Vlotage from (5 to 12V)

Due to that :-

I Used 7.4 LipoBattery to power the Kit Rover

I connected the Leds with 330 Ohms Resistors

I Connected the lcd and ultrasonic sensor to he 5v+ of Arduino

I connected the Motor driver with Vin pin to get the same arduino voltage (7.4 not 5).

Project Programming

6. Describe the code of your project. How did you program each function of the project?

I programmed each single object alone. at first, I programmed theArduino to read the input from the blocks and resistors then Make a movment through the motors controlled by the motor driver.

the second was to programme the ultrasonic to measure the water level and also know if there is an obstacle then emit a light due to the distance of the obstacle.

the Third was to programme the LCD Screen to print the number of the turn and print messages if there is an obstacle or when get the final target distination .

then I integrate between the codes as following:

1- upon the reading of Resistor block when pres bush button make a movement(forward or right or left) when finih Lcd screen print (You reatched the Target)

2- according to the read of the ultra sonic sensor one of the three leds will emit a light due to the distance of obstacle

The LCD will print (''There is obstacle'').

VID_20210315_003452_兼容格式 MP4_480x272.MP4

Discusion of the CAD Design Process and Sequence

Arduino Code

#include <Wire.h>

#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27, 16, 2);

#include <Metro.h> //Include Metro library

Metro delayNew = Metro(1000);

int counter = 1;

int motor1pin1 = 4;

int motor1pin2 = 5;

int motor2pin1 = 7;

int motor2pin2 = 6;

int play = 8 ;

const int trigPin = 3;

const int echoPin = 2;

// defines variables

long duration;

int distance;

void setup() {

// put your setup code here, to run once:

pinMode(motor1pin1, OUTPUT);

pinMode(motor1pin2, OUTPUT);

pinMode(motor2pin1, OUTPUT);

pinMode(motor2pin2, OUTPUT);

pinMode(A0, INPUT);

pinMode(A1, INPUT);

pinMode(A2, INPUT);

pinMode(A3, INPUT);

pinMode(play, INPUT_PULLUP);

Serial.begin(9600);

lcd.init();

lcd.backlight();

pinMode(11, OUTPUT);

pinMode(10, OUTPUT);

pinMode(9, OUTPUT);

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

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

}

void loop() {

// put your main code here, to run repeatedly:

// 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 > 10) {

digitalWrite(11, HIGH);

} else {

digitalWrite(11, LOW);

}

if (distance < 5 && distance > 10) {

digitalWrite(10, HIGH);

} else {

digitalWrite(10, LOW);

}

if (distance < 5) {

digitalWrite(9, HIGH);

} else {

digitalWrite(9, LOW);

}

delay(10);

int block1 = analogRead(A0);

int block2 = analogRead(A1);

int block3 = analogRead(A2);

int block4 = analogRead(A3);

if (delayNew.check() == 1) {

switch (counter)

{

case 1:

action (block1);

lcd.setCursor(0, 1);

lcd.print("HELLO BOY, I'M MELO");

lcd.setCursor(0, 0);

lcd.print(" Step One ");

counter = 2;

break;

case 2:

action (block2);

lcd.setCursor(0, 1);

lcd.print("HELLO BOY, I'M MELO");

lcd.setCursor(0, 0);

lcd.print(" Step Two ");

counter = 3;

break;

case 3:

action (block3);

lcd.setCursor(0, 1);

lcd.print("HELLO BOY, I'M MELO");

lcd.setCursor(0, 0);

lcd.print(" Step Three ");

counter = 4;

break;

case 4:

action (block4);

lcd.setCursor(0, 1);

lcd.print("HELLO BOY, I'M MELO");

lcd.setCursor(0, 0);

lcd.print(" Step Four ");

counter = 1;

break;

}

lcd.setCursor(0, 1);

lcd.print(" ");

Serial.print(block1);

Serial.print(", ");

Serial.print(block2);

Serial.print(", ");

Serial.print(block3);

Serial.print(", ");

Serial.print(block4);

Serial.print(", ");

Serial.print(distance);

Serial.println(", ");

}

void action ( int reading ) {

if (reading > 50 && reading < 70) {

digitalWrite (motor1pin1 , LOW);