VoiceLearn: This project is a puzzle which is made for visually impaired children to facilitate their learning process and make it more fun and entertaining. It works as follows: the user grasps the continent and recognize it, then places it in the corresponding place in the puzzle plate, and finally the device automatically speaks the continent name in both Arabic and English.

Board Making

After deciding the project idea and putting the product preliminary design, I started proceeding by the project board. The board will act as the brain of the puzzle that will be responsible for storing the voice, restore it when it is stimulated by connection, and sense every take and put of the puzzle item.

Board Making Processes

1. Board design and testing on the software

2. Making on the Modella machine

Use double tape to secure the copper board on-top of the sacrificial plate, But don't ovelap the tape or leave bubbles under it to keep the board straight.

Download

Picture must be in a PNG extension picture with black&white(monochromatic) and check the distances between traces to be bigger than the diameter of tool you will use.

Import in FabModules

Import(after importing the picture will appear in the page) --->.rml(the extension of Gcode for roland srm) ---> Traces (chose the process you want to make) --->SRM-20(choose the machine from the list) ---> Calculate(will calculating the code and traces) ---> Save(save the file in your computer to use it)

Import in cutting Vpanel for SRM20(This website will be helpful

3. Soldering of the components

4. Test it and now it is ready for the use

Puzzle Making

The puzzle making here means the process of making the epoxy resin continents that will be used by the visually impaired children and will put on the puzzle surface to stimulate the process to speak the continent name.

Puzzle Making Processes

1. Puzzle making, All process with detail in my (Moulding and Casting Assignment)

2. Make it conductive using copper tape

Puzzle Case Making

The puzzle case is responsible to store all the electronics components, hold the puzzle on its surface, and act like the full puzzle body.

Board Making Processes

1. Design of the case with its cover

2. Mill it on the CNC milling machine (Base and Cover)

3. Surface finish with sand paper

4. Make the continents design to be engraved on the case cover surface

   
   

5. Painting and being ready for use

Programming

It was the time to start program the brain of the final product.

Prepare my own board by burn on it the bootloader to be ready for programming

Uploaded Arduino ISP code on the Arduino board to make it a programmer.

Then I've uploaded my code on board

#include 
#include 
#include 

#include "SD.h"
#define SD_ChipSelectPin 4
#include "TMRpcm.h"
#include "SPI.h"
#define trigpin 7
#define trigopin 8

TMRpcm tmrpcm;

void setup(){
  pinMode (trigpin,INPUT_PULLUP);
  pinMode (trigopin,INPUT_PULLUP);
tmrpcm.speakerPin = 9;
Serial.begin(9600);
if (!SD.begin(SD_ChipSelectPin)) {
Serial.println("SD fail");
return;
}


}
int flag=0;
int flag1=0;

void loop(){ 
  int sp;
  int sp1;
  sp=digitalRead(trigpin);
    sp1=digitalRead(trigopin);
      if (sp==LOW&&flag==0) {
     tmrpcm.setVolume(5);
tmrpcm.play("diags.wav");    
delay (5000);
flag=1;
  }
  else if (sp1==LOW&&flag1==0) {
     tmrpcm.setVolume(5);
tmrpcm.play("Africa.wav");
delay (5000);
flag1=1;
  }
  else if (sp==HIGH&&sp1==HIGH){
    flag=0;
    flag1=0;
    delay (500);
    }
  
  }

Now lets test it

Arduino code source

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Final Product

After finalizing all subsystems of the puzzle, I connected them all together, assembled the, and finalized all connections and fixations

Testing and Feedback

After finalizing the product I tested it on 5+ visually impaired users and took fruitful feedbacks that will be taken into considerations in the commercial implementations.

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The project will be a teaching puzzle for visually impaired people who wants to learn about different contents in their own. It will be an electronically designed puzzle that allows the learner to pick the continent part, put it in its dedicated place it in the puzzle board, and then automatically the board will start speaking the continent name.

There is a startup called Seraj in our lab are working in producing a puzzle to help people in general learning about the geometrical shapes. The difference here is that the Seraj project is a manual board that needs a facilitator or a helper to facilitate the learner. Furthermore, there is lots of such projects in the toys market that speak the puzzle piece name, but it is for geometrical shapes, numbers or zoo stuff and nothing has been done before for continent and such a content.

Puzzle: Puzzle block from casting, puzzle board/casing
Electronics: Sensors, speakers, microcontrollers, buttons/switches, cupper boards

Buy: raw materials for casting and puzzle casing, sensors, electronics basic components such as switches and jumpers, speakers (From the Lab Inventory)
Make: Casting and finally used puzzle parts and casing, PCB (Using Lab M/Cs).

Not determined yet.

1. Casting and finally used puzzle parts
2. Casing
3. PCB (Using Lab M/Cs)
4. Programming by ISP

Approach Used: Design Thinking.
Technical Processes: Casting, Molding, Milling, Laser Cutting.

To accomplish the final project there are lots of things have to be done

1. Empathy with the visually impaired people (Empathy list of questions)
2. How can I do programming with ISP?
3. How can I do milling for 3D-shapes?
4. What is the well-functioning and cost-efficient components?

The evaluation will be made through the implementation process in two main levels:
The first level is that related to the scope defined it will be made by the project owner (me) to make sure if the project goals and objectives have been accomplished.
the second level is the user feedback that allow me to make sure that the user is getting the best benefit out of the project and has felt a difference in learning independently.

• Preparation of the Puzzle Parts:
1. Prepare mold material (Silicon)
2. Make the mold
3. Pour the puzzle parts material (epoxy)
4. Wait to cool
5. Extract
• Preparation of the Puzzle Board:
1. 2D design to be laser catted
2. Laser cut the board
• Electronics
1. Do PCB design
2. Mill it using Modella
3. Assembly of the electronic components including speakers and sensors
• Programming:
1. Program the controller



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What i've learned

If we divided it into the different modules where i got through:

1. Design (2D,3D)
2. Machining
3. Electronics
4. Programming
5. Hands-on skills
6. Management
7. Version control skills and tools
8. Documentation
9. Presentations



I will start from the end and list all what i've learned

1. How to present a product with a long jurney in very small time (final presentation)
2. How to manage your time, resources and effort to get any result you want in a specifid bounded time
3. Alot of hands-one skills through different materials (molding, casting, cooking and electronic SMD soldering
4. Best way to document any thing, It's tips, tricks and the skill itself.
5. Technical documentation and experience documentation
6. What's version control and how to make it
7. Programming in different enviroments and using different tools and how to get a programmed something
8. Electronics components and it's functions and how to use it to make something alive
9. Machining tips and tricks and with the technical details like machine settings and others
10. Design with 2D and 3D tools and exploring a new software and tools to make different design files

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---------------> The Final Project