Final Project Journal

Project Ideation

1- 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

the final project is a safe !! but with some fancy features and cool effects.

the project in concept looks simple...but trust me it's not I promise

I faced a problem that may be faced you either ,its chocolate disappearing phenomenon ( which caused by younger siblings in the most cases ) so I searched for something to solve this problem

I found this mesmerizing mechanism
(bulley expanding mechanism ) and decided to use it in my project.

the safe was made with passkey that make a specific frequency so when you insert the key it senses if its right passkey or not and opens with some welcoming lights and satisfying mechanical sounds

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)

firstly let me introduce to you the softwares I've used in the design process

inkscape

Grabcad

fusion 360

illustrator

the design process

I draw some hand sketching to empty my mind and be visible to others also.

then started cad design based on sketch dimensions shown above (version 1) using fusion 360 software

Pla Frame V2-1.m4v

in this version 1, there were some problems with the design
some of them were the efficiency it was too large and weight more than my quota can cover and probably would be fragile if printed in this shape so I redesigned it but with the same concept (hexagonal box ) and added some features to it


version 2 design

New Final Project Bulley V1-1.mp4

  • in version 2 I decided to make the sides from plywood and print only the top, and bottom of the safe,

  • and the mechanism also to reduce the used plastic in 3d printing process,

  • separated sides from each other in design to be jointed later after the fabrication to be stronger

  • but still have some more to upgrade!!





in version 3 and the last one I added and upgraded more and more in the design to be better and more suitable and good looking

  • first canceled the idea of t slots and plastic sides

  • added clearance to all mechanisms and moving or sliding parts

  • added a small extrude like a ring inward to prevent the lid from falling into the safe

  • made cuts to the upper base to make it lighter for easier 3d printing and more complex design and fancier product

  • created angles from zero specially for this safe the first angle printed like this I guess !! (using threaded inserts)

  • added a pattern to the rotating ring for an artistic touch

  • added slots to fit two servo motors for movement

  • and for the history lovers and architects, the safe made with gothic theme


finally design version 3

Finale-1.mp4

those some of the components of the project

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)

prusa mk3 printer

cura slicer

laser cutting machine

soldering station

fabricating phase


first I cut a prototype to test the functionality of my mechanism and design.....and as I hoped it worked properly

testing phase

started cutting the project after testing it with prototype

that's me after cutting and working with my tired eyes

the top base and top ring printing

great fittings, so don't forget!



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)

my circuit contains 2 servos

  • neopixel ring

  • 2 LDR modules

list of components :

  • LDR

  • servo motors

  • lm7805

  • arduino nano

  • adapter 9v

  • neopixel ring 16led

the circuit should work as follow:

first the LDRs are for inputs when LDR 1 detect a signal from passkey it sends a signal to Arduino then LDR 2 when it blacked out says it's turned off so when the two conditions are covered the Arduino rotates servo 1 to unlock rotating movement and rotate servo 2 to rotate the whole upper cylinder to unlock the safe, then lights up the led ring to make a pleasing and colorful lights

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)

used tinkercad to tinker my circuit and spot if there any issues in it

the power was a 9v power supply or higher with a 5v voltage regulator

the reason I used a 9V adapter is that the Arduino can't power all those components at once as it has limited current so I used an external power source independently to power the electronics and the Arduino to, by that way it can work without any laptop or pc attached just the adapter or any external power supply

I used 9v or higher to power my project, adding lm7805 voltage regulator to limit the voltage
all connections were parallel

Project Programming

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

BEFORE VOID SETUP :

include all the needed libraries and set variables to be easier in the next steps as a programmer


VOID SETUP:

set pins for servos and LDRs and neopixel ring
serial print for showing the values of the input signal from passkey, and set it later as the official pass signal


void loop:

now the important part

set on time, off time and period to measure signal hertz and duty cycle

now to if condition:

if the frequency of the signal lower than 1000 then (print it on serial monitor and go to another if in it to see if the signal in the range of the passkey right or no if right open the safe and unlock rotation lock also light up the led, if not close the safe, turn off the lights and lock the rotation


Project Integration & Testing (fun time)

7- Demonstrate with text and visuals how did you integrate the project’s modules together? What are the testing results? (Include a Demo video separately, showing a proof of functionality)

then inserted the pins that lock the lid

fixing the wood to the sides in the threaded inserts

20220923 211532 3-1.m4v
Neopixel-1.m4v

testing the colors that I want and patterns


final.mp4

first good fitting that showed me how genius I am hahaha

adding the threaded inserts to upper ring

working with the best in this workspace.....say hi to Mohanad in the background

programming/testing electronics before mounting into the body

threaded inserts insertion

20220924 012237-1.m4v

testing lid functionality


acrylic final

Sharing & Collaboration

8- 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?


i took an idea recommendation for the lid of the safe

and thanks to all of you :

yosr, rawan, doaa, zahraa

once upon a time doaa brought to us the best متدلعة ever from it's original home (tanta ) and that was the best gift in the diploma till now ....i thank her a lot and I will thank her more and more

a short walk to Tahrir square (the heart of the capital )

and that beautiful day when I made new friends and met all of them for the first time... was a great day to remember

Overcoming Challenges

9- 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 project?

the biggest problem I had was t-slots, I hate t-slots and was making my project looks awful and lacking a good appearance

so I created a new way to connect parts with less effort and easier to make

another problem that faced me and was Arduino wasn't responding at any condition

I tried all methods such as port, processor, and so on but didn't work

disabled the port and enabled it

and finally I tried one last thing updating the drivers of my pc and that was the problem so always check for updates and be up to date

cad and laser cutting problem was when exporting a dxf. file from fusion that contains splines or curves it exports with lines can be deleted with the editor plug-in in fusion, but in my case that didn't work.

so I took a screenshot and traced it with Inkscape and exported it to dxf and scaled it to the right dimensions in the laser work program

Future Work

10- If you had more time, what is one thing you would change/ Do next in your project?

I would make a case or enclosure for the passkey to be more compact and look nicer,
also, add a magnet to it to snap to its position automatically and smoothly like my earbuds.

I would add more patterns to the neopixel to be more pleasant to the eyes

Final Project Design Files