Week 8- 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)

I don't mind having a different kind of vibe. I'm someone who loves my room a lot, and I like to have different things and decorations in it. So, I don't mind having RGB lighting that lets me choose different colors for the room depending on my mood. I also don't mind having the fan on a remote control for those lazy times🥱.

Tool Chain

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

Arduino Bluetooth Control

Tinkercad

Fritzing software

Arduino IDE software

Components :-

Buletooth module

Fan

Ardunio

Jumpers

Resistance

RGB led

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?

Input:-

buletooth module .

Output:-

RGB LED and Fan

First, I connected the positive and negative (5V and GND) from the Arduino to the breadboard. Then, I placed the RGB LED, which is the first output device. I placed a 330-ohm resistor on each leg (anode) for the red, blue, and green LEDs. I then connected them to pins 10, 11, and 12 respectively.

After that, I connected the Bluetooth module(Input device) as follows:

The positive (VCC) to the positive (5V) on the Arduino.
The negative (GND) to the negative (GND) on the Arduino.
I also took a wire from its TX pin connected to a 1K ohm resistor, and then to a point on the breadboard which is connected to the Arduino's RX pin.
Then, from that same point, I connected a 660-ohm resistor to the Arduino's TX pin.
The final pin, which is the RX of the Bluetooth module, I connected directly to the TX of the Arduino.

The last thing was the fan. One of its wires is connected to the Arduino's ground (GND), and the other wire is connected to pin number 9. As an alternative to it, I used a DC motor.(that the 2nd output)

Coding:-

First, I started by defining the pins for each color (of the RGB LED) and the fan pin. Then, I set their pinMode to OUTPUT, and they were all outputs.

After that, I set a condition that as long as no data has been sent yet, the values shouldn't appear on the monitor.

Then, I started setting the conditions:

If the incomingData is equal to '1', pin 10 should turn ON (HIGH) and the other pins should be LOW, and so on.
Until the condition that if the value '4' is sent, the fan turns ON.

The last condition was that if any value other than the specified ones is received, all pins should turn ON (HIGH) except fan .

Finally, the code prints the value of the data being sent to the Serial Monitor.

The last condition was that if any value other than the specified ones is received, all pins should turn ON (HIGH) except fan .

Finally, the code prints the value of the data being sent to the Serial Monitor.

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?

I connected the Bluetooth sensor (module) to the breadboard. I connected the VCC pin to the 5V(the power source value) pin on the Arduino, and also connected the Bluetooth module's GND to the Arduino's GND.

I then took the TX pin from the Bluetooth module and connected it to a common point between two resistors: one 1K ohm and the other 330 ohm. Between the second resistor (the 330 ohm) and a third resistor (also valued at 330 ohms), I made a connection to the Arduino's TX pin.

After that, I connected the common cathode of the RGB LED to the Arduino's GND. I connected each of the three remaining legs (anodes) to a 330-ohm resistor. Then, I connected the other ends of the resistors to Arduino pins 10, 11, and 12 respectively.

input components:-

Buletooth module

output components:-

RGB and fan

10770af9-5639-485a-a9fb-9c6ea219ee7f.mp4

Then, I opened the 'Arduino Bluetooth Control' app on my phone (after pairing with the Bluetooth module) and started sending values from the buttons. I printed the result to the Serial Monitor, and it was displayed clearly at the top of the code screenshot.

The last thing was the fan. I connected its negative wire to the Arduino's GND and the positive wire to pin number 9.

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?

Yeah, I had a challenge because I didn't know how to properly connect a voltage divider resistor, so the circuit wasn't working. Then I started paying close attention to the connections, and the problem was that I wasn't connecting the common part, which is the ground of buletooth sensor, with the resistor.

Final Project

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

I can use the knowledge of electronics to prepare the final project for the fabrication process also I can use online sources to choose the outline of my design .

WOW!

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

The coolest thing for this week was Micro Robot Arm

VID20250906161856.mp4

Assignment Design Files

Arduino IDE file. ino

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