Week #8 Journal

Ideation

The main idea is to control servo motor and led through mobile application that sends signals to the Bluetooth module which is connected to the Arduino.

I have been inspired by controlling Arduino's components via smart phone Bluetooth module in addition to sending data.

Tool Chain

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

Software Tools:

Tinker CAD: to build the virtual circuit
Arduino IDE: to upload the code to the Arduino board
Arduino Bluetooth Control mobile app: to communicate wirelessly to the Bluetooth module

TinkerCad

Arduino

Arduino BlueControl mobile App

BreadBoard

Servo Motor

HC06

Wires

Arduino Uno

Electric Components:

Breadboard, wires to connect the component
1 servo motor
Buzzer
Bluetooth module: for the wireless communication

Arduino Uno: to read the input wireless signals from the Bluetooth module, and control the action 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?

1- Circuit main power supply:

I used Arduino 5v output and connected it to
breadboard (+,-) terminals to feed all other components

2- Bluetooth module:

Will communicate with the mobile application (INPUT)
Receive commands from the paired mobile
Transmit these data to Arduino

3- Bluetooth module wiring:

Its VCC is connected to breadboard + terminal
Its GND is connected to breadboard - terminal
Its Tx pin is connected to Arduino Rx pin
Its Rx pin is connected to Arduino Tx pin

4- Servo Motor (OUTPUT)

Its VCC is connected to breadboard + terminal
Its GND is connected to breadboard - terminal
Its signal pin is attached to Arduino

5- Buzzer (OUTPUT)

Its + terminal is connected to Arduino pin OUTPUT
Its GND is connected to breadboard - terminal

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?

1- Circuit main power supply:

I used Arduino 5v output and connected it to breadboard (+,-) terminals to feed all other components

2- Bluetooth module:

Will communicate with the mobile application (INPUT)
Receive commands from the paired mobile
Transmit these data to Arduino

3- Bluetooth module wiring:

Its VCC is connected to breadboard + terminal
Its GND is connected to breadboard - terminal
Its Tx pin is connected to Arduino Rx pin
Its Rx pin is connected to Arduino Tx pin

4- Servo Motor (OUTPUT)

Its VCC is connected to breadboard + terminal
Its GND is connected to breadboard - terminal
Its signal pin is attached to Arduino (pin 10)

5- Buzzer (OUTPUT)

Its + terminal is connected to Arduino (pin 13)
Its GND is connected to breadboard - terminal

week8.mp4

A- Includes and declaration

1- Include library of servo motor , that has customize functions related to servo

2- Define variable to store data received from Bluetooth

3- Assign pin 13 to the buzzer

4-Create instance from servo

5- Declare variable for servo position

6- Start serial communication and set baud rate

7- Attach servo to pin 10

8- Set servo initial position to 0

9- Set pin 13 as OUTPUT for Buzzer

B- Main Code

1- as long as Bluetooth module is available

Read serial data and store it in a variable named "incomingData"

2- If Mobile application send 1 ( in other words, if Arduino received 1)

Buzzer will be activated
Servo will move to position 5

3- If Mobile application send 0 ( in other words, if Arduino received 0)

Buzzer will be deactivated
Servo will move to position 10

Overcoming Challenges

What kinds of challenges or problems did you face while doing the assignment, tutorials, or exercises? How did you solve them? Did you ask for help from an instructor or peer? Please provide a link to the tutorial or article that you used to solve your problem (if any)

First time to work with Bluetooth and serial communication and I was confused about Tx and Rx and how to connect them.

While testing the project , the data was not received by Arduino and the code was not working.

after many trails, I found that the Tx of Bluetooth is connected to Arduino TX , and Rx of Bluetooth is connected to Arduino RX.

Once I swapped the two wires, the code was working.

Now it is clear for me that the transmit of Bluetooth is the receive of the Arduino and vice verse.

Assignment Design Files

Arduino code *ino

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