Embedded Files
Ideation
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)
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)
Turn the candels offf
I wanted to create a simple device that combines light, sound, and motion. Since candles are commonly used at home, I came up with the idea of an Electronic Candle Extinguisher. The device uses a fan to blow out the candle, while an LED provides visual feedback and a buzzer gives an audio signal when the system is working.
Tool Chain
Tool Chain
Which software/machines/materials did you use in the assignment? Why?
Which software/machines/materials did you use in the assignment? Why?
Tools
Software: Tinkercad (for design and simulation)
Components:
LED + 220Ω Resistor
Buzzer
DC Motor + Fan blade
Breadboard
On/Off Switch
5V Adapter (Power supply)
Materials: Cardboard (for enclosure), tape, cutter
Tools: Jumper wires, Multimeter (for testing voltage)
Simulation Software
Design/Preparation Process
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?
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?
tinkerTinkercad simulation
Design on Tinkercad
The circuit consists of a 5V power supply connected to an On/Off switch. After the switch, the circuit splits into parallel connections for:
LED + Resistor 220 (light indicator)
Buzzer (sound signal)
DC Motor (fan to blow out the candle)
The circuit was built and tested on a breadboard, including an LED with a resistor, a buzzer, a DC motor, and a switch connected to the power supply. All components were connected in parallel, ensuring that each receives full voltage and works properly at the same time. A series connection was avoided, as it would reduce voltage across the components and weaken their performance.
The LED was connected with a resistor for protection, while the buzzer and motor were wired directly. The fan was simulated using a DC motor on Tinkercad due to component availability.
After testing, the circuit was mounted inside a cardboard box with the LED placed at the front, the buzzer exposed for sound, and the motor fixed near an opening to direct airflow. When switched on, all components work simultaneously, and the motor produces enough air to extinguish a candle flame.
Development/Implementation Process
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?
Explain the development/implementation process of your assignment. How did you use the machine/tool to manufacture or implement the design of your assignment?
The electrical circuit was first prototyped and tested on a breadboard. The design included an LED with a resistor, a buzzer, a DC motor, and a switch connected to the power supply. All components were wired in parallel so that they operate simultaneously when the switch is turned on. The LED was connected in series with a resistor to limit current, while the buzzer and motor were connected directly between power and ground. The ground connections of all components were linked back to the power supply ground.
During the simulation, there was a challenge in finding all the exact components on Tinkercad. To solve this, the fan was replaced with a DC motor in the design to simulate the airflow effect. This allowed the testing process to continue smoothly.
After testing on the breadboard, the circuit was mounted inside a cardboard enclosure. Two 10 cm × 10 cm cardboard squares were cut and glued together to form the base and top of the box. Openings were carefully cut in the cardboard to allow the DC motor to fit securely and blow air outside. The LED was positioned at the front to act as an indicator, the buzzer was placed to emit sound clearly, and the motor was fixed near the opening in the enclosure so that it could blow air directly towards a candle flame. The cardboard structure was cut and assembled to securely hold all the components in place.
When the switch is turned on, the LED lights up, the buzzer produces sound, and the fan produces airflow. The final prototype successfully functions as a candle extinguisher, demonstrated by blowing out a candle flame in the video.
Community of Learning
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?
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?
While implementing my project, I faced a problem with the switch connection and the LED with resistor wiring, which made the circuit not work at first.
I asked my colleague Yousef for advice, and he explained to me that:
The switch should only be connected to the power line, not both power and ground.
The resistor and LED should be connected together, with the resistor attached to the positive (power) and the LED’s other pin connected to ground.
After following his instructions, the circuit worked correctly. This collaborative help was very important for me to overcome the problem.
Overcoming Challenges
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?
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?
When I got stuck, I turned to Tinkercad’s component library. At first, I faced a problem because I could not find a fan component in Tinkercad to simulate my idea. I had to pause and think of an alternative. After a bit of searching and trial and error, I solved the issue by replacing the fan with a DC motor in the simulation.
This worked well because the motor represents the same concept of generating movement/airflow in the real device.
A challenge that others might avoid is spending too much time searching for a component that doesn’t exist in Tinkercad. Instead, they should look for functional equivalents (like replacing a fan with a DC motor, or a buzzer with a piezo). This saves time and keeps the simulation process smooth.
Final Project
Final Project
How can you use the skills and knowledge that you've acquired this week in your final project?
How can you use the skills and knowledge that you've acquired this week in your final project?
Of course, this will help me to translate my own project idea into a prototype that could perform a real action. by using the tinker cad simulation software and the different skills we learned through this week in performing the circuits by using different electric tools.
Weekly Digest
Weekly Digest
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.
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.
Assignment Design Files
Assignment Design Files
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