Week 6 # - Journal

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)

My idea is based on my final project which is a smart reminder box for students and worker to keep healthy habits like staying hydrated, taking breaks, and stretch.

Idea: Build and program the LEDs Color reminders circuit of the box to do the assignment. When the worker or student sits on their desk, the ultrasonic sensor detects them and triggers the LEDs to start operating.

Input component: Ultra Sonic Sensor "HC - SR04

Output (action) component: 3 LEDs (red -yellow - green)

Source of Inspiration: My Final Project Idea

Find my reference in this link.

Tool Chain

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

Software:

1. Tinker CAD

Online software for 3D design, electronics, and coding.

I used it to design and simulate my circuit.

2. Arduino IDE

Online software for programming Arduino.

I used it to program my circuit.

Components

Breadboard

LEDs

Resistors

Connecting Wires

Ultrasonic Sensor - HC-SR04

Arduino UNO

Tools:

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?

Design

Design On Tinker Cad

Wiring:

Built a circuit powered on tinkercad.

Using a breadboard, I put 3 LEDs and connected a 330 OHM resistor in series with each one of them.

The positive side is connected to digital pins on Arduino.

Negative sides connected to the Arduino common ground.

Made Ultrasonic sensor wiring using the video in the Maker Diploma materials. Reference Link

Components used:
- 3 LEDs (Yellow, Green, and Red).
- Three 330-ohm resistors (to protect the LED).
- Ultrasonic Sensor - HC-SR04
- Connecting Wires
- Arduino UNO
Power source: : 5V from Arduino
Output:
- LED lights up.
- Motor operates.
How it works:
- Switch completes the circuit.
- Current flows through the LED (with resistor) and motor.

Code Blocks

Code Text

Code Blocks & Text

The ultrasonic sensor detects an object's distance. If the distance is less than 30 cm, the LEDs turn on sequentially (pin 8 → pin 9 → pin 10), each staying on for 1 second before turning off. If no object is detected, all LEDs remain off.

Input: Ultrasonic sensor reads distance.
Logic: If distance < 30 cm → cycle through LEDs with delays.
Output: LEDs light up one by one in a loop, signaling the reminder.

Reference Link to Tinkercad file: Link

Screen-Recording.mp4

The Circuit was successfully simulated on TinkerCad

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?

Prototyping & Build

Building The Curcuit

Compiling and Uploading Code

Testing

PXL_20250204_145206753.mp4

Curcuit is Successfully Working!!

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?

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?

Challenges

Circuit didn't work

I didnt notice that the long wire line in the breadboard is separated from the middle. (Rookie mistake 😂)
I discovered this by troubleshooting and revising current flow.

Final Project

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

Title of Media

I learned how to program the Arduino to give me the LEDs function I will need.
It even gave me a n idea of an extra feature. (The Ultrasonic)

WOW!

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

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.

Assignment Design Files

Arduino Code

Page updated

Report abuse