Week 5

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)

Touch door bell

This week we were assigned to Design, simulate, and build a simple electronic device that performs two actions.

I choose to make a touch door bell that also lights up. but alas, I didn't have the required transistor in my kit. so I switched the idea to make a door bell with a push button and also lights up.

Tool Chain

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

Software:

Tinkercad to test the circuit.

Materials:

Mini Breadboard
Jumber wires.
Piezo Buzzer. 7mA @ 3Vdc
Red push button.
on/off slide switch.
Red LED. 16-18mA @ 1.8-2.2VDC
220 Ω resistor.
9v power adapter.
cardboard of enclosure.

sorting the needed components

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?

Tinkercad

buzzer .mp4

Tinkercad Simulation

I used tinkercad to simulate the circuit and test that everything works.

The circuit

I started dragging components from the right side panel and adjust the placement and wiring in parallel and made sure everything works before prototyping it on the breadboard.

Using 5V Power supply in the simulation, which is enough to drive the components .

Piezo Buzzer. 7mA @ 3Vdc
Red LED. 16-18mA @ 1.8-2.2VDC

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?

after lying out the components on the breadboard and making sure it works I cut out a 6*6*6 cm cube out of cardboard and used hot glue gun to fix it together.

1st trial and the enclosure was too small

mini bread board

bigger enclosure and everything fits.

last side to glue

Final Product assembled

Pxl 20220214 134636998-1.mp4

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?

TMP36 Temp Sensor

Transistor 2N2222

the original idea called for Transistor 2N2222 , I thought we had one in our kit, But I was mistaken.

my instructor pointed out to me that what we have is TMP36 Temp Sensor . which won't work.

I opted to replace the touch button with a push button.

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?

I started my enclosure with 4*5*6 cm dimensions , thinking it would fit , I was too optimistic. I needed to make a bigger enclosure 6*6*6 cm.

I learnt that I need to give bigger space for wires and components.

Old enclosure VS new enclosure

Final Project

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

A mess of spaghetti

I learned this week that the mess of wiring takes a lot of space, I should adjust my final design to contain all these wires :)

WOW!

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

it was interesting to learn about transistors.

Transistors Explained - How transistors work

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.

we had fun working on our version of sumo / battlebots.

BattleBots Egyptian Edition

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