Embedded Files
Ideation
Ideation
Tell us about your assignment's idea for this week.
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)
Why do you care about this idea? What inspired you? (Please include images or links to sources of inspiration)
Parking Sensors
Alarm with Buzzer and Lights
Parking Sensors
Alarm with Buzzer and Lights
I am designing a Parking Sensor Alarm system that uses a combination of LED lights and a buzzer to alert drivers when they are approaching an obstacle.
The system measures the distance to nearby objects using an ultrasonic sensor and provides visual and auditory feedback:
Red Light + Fast Beep: Very close to an object (danger)
Green Light + Medium Beep: Approaching an object (caution)
Blue Light + Slow Beep: Slight distance (safe zone)
This combination ensures the driver is aware of how close they are to obstacles, enhancing safety during parking.
I planned to integrate the following electronic components:
Arduino Uno Board – to control the sensor and LED
Ultrasonic Sensor (HC-SR04) – to measure distance to obstacles
RGB LED – for red, green, and blue alerts in one component
Buzzer – to generate sound alerts
Resistors (220 Ω) – one for each RGB channel to limit current
Jumper Wires – to connect components to Arduino
Breadboard – for prototyping the circuit
Power Supply – USB from Arduino or external 5V
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?
Circuit Building Software
TINKERCAD
Arduino IDE
Electric Components
Arduino Uno
Arduino Uno
Jumper Wires
Jumper Wires
Breadboard
Breadboard
LED
LED
Cooling Fan
Cooling Fan
Buzzer
Buzzer
Design/Preparation Process
Design/Preparation Process
Explain the design and/or preparation process of your assignment.
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?
How did you use the tool or software to design and/or prepare your assignment before fabrication/implementation?
Designed using TINKER CAD
Designed using TINKER CAD
I added all the components to TINKER CAD
I added all the components to TINKER CAD
STARTED MAKING THE CIRCUIT
Put the components on the breadboard
Put the components on the breadboard
(RGB LED, Buzzer, and resistors)
(RGB LED, Buzzer, and resistors)
Connected all the GND wires (Negative)
Connected all the GND wires (Negative)
Then connected all the 5V wires (Positive)
Then connected all the 5V wires (Positive)
A screenshot of the connection of the pins only with the GND or 5V wires
A screenshot of the connection of the pins only with the GND or 5V wires
Final Circuit
Final Circuit
Video_2025-08-27_040549.wmvSimulation Video
Simulation Video
TinkerCAD Code Blocks Explanation
TinkerCAD Code Blocks Explanation
Part 1: if Distance <= 100
if Distance <= 100 then
set pin 3 to LOW
set pin 5 to LOW
set pin 6 to HIGH
play speaker on pin 4 with tone 1000 for 1 sec
Explanation:
Condition: If the measured distance is less than or equal to 100 cm.
RGB LED:
pin 3 (e.g., Red) → LOW → off
pin 5 (e.g., Green) → LOW → off
pin 6 (e.g., Blue) → HIGH → on
→ The LED will show blue.
Buzzer: Produces a sound at 1000 Hz for 1 second.
Part 2: if Distance <= 200
if Distance <= 200 then
set pin 3 to HIGH
set pin 5 to LOW
set pin 6 to LOW
play speaker on pin 4 with tone 750 for 1 sec
Explanation:
Condition: If the distance is less than or equal to 200 cm (but greater than 100 cm because the previous if already handles 0–100 cm).
RGB LED:
pin 3 → HIGH → on (Red)
pin 5 → LOW → off
pin 6 → LOW → off
→ The LED shows red.
Buzzer: Produces a sound at 750 Hz for 1 second
Part 3: if Distance <= 300
if Distance <= 300 then
set pin 3 to LOW
set pin 5 to HIGH
set pin 6 to LOW
play speaker on pin 4 with tone 500 for 1 sec
Explanation:
Condition: If the distance is less than or equal to 300 cm (and greater than 200 cm, since the previous conditions did not apply).
RGB LED:
pin 3 → LOW → off
pin 5 → HIGH → on (Green)
pin 6 → LOW → off
→ The LED shows green.
Buzzer: Produces a sound at 500 Hz for 1 second.
TinkerCAD Code Blocks + Text
TinkerCAD Code Blocks + Text
Code on Arduino
Code on Arduino
Development/Implementation Process
Development/Implementation Process
Explain the development/implementation process 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?
How did you use the machine/tool to manufacture or implement the design of your assignment?
Cardboard Enclosure
Ultrasonic sensor with the female jumper wires
Ultrasonic sensor with the female jumper wires
Full Connections on the Breadboard
Full Connections on the Breadboard
Full Connections on the Breadboard
Full Connections on the Breadboard
Explaining:
Resistors
Buzzer
RGB LED
Explaining:
Resistors
Buzzer
RGB LED
Connections on the Arduino Uno
Connections on the Arduino Uno
Full Circuit
Full Circuit
VID_20250827_025806.mp4Video of the Final Result
Video of the Final Result
VID_20250827_025645.mp4Video of the Final Result
Video of the Final Result
Community of Learning
Community of Learning
Did you ask for feedback? What are the ideas that others have contributed or suggested?
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?
What was someone else’s idea that you built upon? How did you help your peers? How did your peers help you?
Watching teams presenting their ideas in the session!
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?
RGB LED CODING
RGB LED CODING
When I got stuck / Research needed
I had trouble getting the RGB LED to display the correct colors according to the distance measured by the ultrasonic sensor.
The hardest part was making the buzzer sound change with distance while keeping the LED colors accurate. I had to research how `pulseIn()` works and how to calculate distance correctly.
After testing and adjusting the code, I figured out how to combine the LED and buzzer logic so both work together smoothly.
Mistakes / Pitfalls / Challenges
At first, the RGB LED didn’t always show the intended colors at the right distances. I realized that setting up the correct if/else conditions for smooth color transitions was trickier than I expected.
When testing on the real circuit, debugging became more challenging due to wiring and pin connection issues. On top of that, combining the buzzer and LED logic caused unexpected behavior if not carefully managed.
Each of these challenges was connected, and I had to address them step by step to make the system work reliably.
Tips for Others
Test the buzzer and LED separately before combining them.
Start with simple if/else statements before using nested conditions.
Double-check all wiring and pin connections on the real circuit.
Verify distance calculations carefully to ensure LED colors change at the correct distances.
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?
Title of Media
WOW!
WOW!
What is the coolest thing that you've learned this week? What is something that you will never forget from this week?
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]
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.
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.
Title of Media
Assignment Design Files
Assignment Design Files
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