Week 4 - Journal

Ideation

The assignment was to design a circuit which has a ON/OFF switch of the whole system and has two different forms of outputs light, sound and motion.

I really took long time to decide what to do as I wanted it to be awesome but after I made it I hated my creation for me it was the laziest thing I ever done... I am sorry for the lack of creativity in this one project this will be the last time.....The name of the project is: OH wait I will call it Sakura (From @Naruto@) Or you can call it whatever anime character you see is useless and has to be there ^^.

This is why:

I hate it.
It is noisy.
Useless but gets the job done (IDK how but its true )

Tool Chain

I used:

For simulation and designing: Tinkercad

Components:

Power supply adaptor: 12V/9V
1 x 5V regulator
Resistors: (220, 330, 120, 600)
ON/Off switch (input/start)
4x push buttons (input)
5V brushless fan (output)
4 LEDs (Red, Yellow, Green, White) (output)
5V Piezo buzzer (output)
Jumpers

bandicam 2021-08-16 12-37-30-737.mp4

Click the pic to see the circuit

Design/Preparation Process

The design process:

As you can see in the circuit there are three main parts:

Part(1) - Power supply, the ON/OFF switch and the 5V regulator
Part(2) - Piezo buzzer and the LEDs (connected in series through the push buttons)
Part(3) - Brushless fan (connected in parallel to the second part)

Part (1)

you can see the positive terminal of the power supply is connected to one terminal of the ON/OFF switch and the other terminal is a NODE (node1) which connects the switch to Part(2) and the 5V regulator input terminal (the other two terminal the common is connected to the ground and the other is the output connected to Part (3) ).

Part (2)

This part starts from (node1) with each of the four LEDs connected in series with a resistor and a push button and all of them are in parallel to give us a pattern like in the circuit.. after that this combination is connected in series with the positive terminal of the Piezo buzzer and the negative terminal to the ground and that is part (2)

Part (3)

We take the terminals of the brushless fan and connect the positive one to the output terminal of the regulator and the second terminal to the ground...

Outputs:

Piezo buzzer
LEDs
Brushless fan

Connectivity Method:

Piezo buzzer and LEDs (in series) (Part (2))
Brushless fan with Part (2) (in parallel)

Designing the enclosure:

It was a messy process unfortunately it was hard focusing on building an enclosure and filming at the same time so what you get is the final look......

I tried to give it and interface explaining what how it would function.... Like where to plug in the power and where is the ON/Off switch and the BUZZZZZZ buttons and the fan to give you the most unsatisfiable breeze.

20210814_050146.mp4

Development/Implementation Process

And finally you can see Sakura doing it's job:

When turning on the switch the circuit will operate we will see the fan started to spin and then if we press anyone of the push buttons the buzzer will make an unpleasant sound and the connected LED will illuminate you can make combinations of sounds as you press the push buttons.

You can generate 2^4 combinations....

bandicam 2021-08-16 12-37-30-737.mp4

20210814_050232.mp4

Community of Learning

What I learnt from the Instructors or My peers:

I have damaged a potentiometer through the exercise and asked the instructor for the reason and it was that when connecting a potentiometer to the circuit for more safety we should connect it with a constant resistor to avoid burning it as when it is not and you make the wiper makes the used resistance very small it will burn due to the excess current flows through it but when using a limiting current resistor it would be safer..
I shared some materials with my peers concerning the 7 segment and the potentiometer from Electronics tutorials

Overcoming Challenges

Challenges I faced:

I wanted to use a potentiometer to control the speed of the fan but it didn't would as I connected the potentiometer in series with the fan and a constant resistance in order not to burn the potentiometer (Like I did before)...

It didn't work because the voltage reached the fan is not enough to make it operate..

the solution I asked for the instructor Ahmed Ibrahiem and he said that the best way to connect the potentiometer is to make it a voltage divider has and input and output and I control the voltage through the change in resistance.

The designing of the enclosure and fixing every thing in its place it was hard and nerve breaking....

the solution is try harder and harder ^^

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?

Title of Media

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.