Week # 8 - Journal

Homework idea this week

It is my creation to use mainly in the final project

It is about using Bluetooth to send commands

via mobile

Show a question on the screen

(press the red button)

This is part of the final project where I will get an answer that implements another action

This idea is for training and preparation for the final project

the beginning :

Develop steps for work and the required components and prepare them .

Then : Connecting the parts in the tinkercad like a picture

and identifying the pins i will  used

Then I went to the practical implementation, 

and the first thing was the breadboard  Then connect the wires from the Arduino to it 

Where I connected the red wire from the arduino 

To the breadboard to red volt line and the same GNB  connected a black wire that connects between the ground on the Arduino and the black ground line on the post board

And connects  the buzzer to Arduion pin (9) and GNB in breadboard 

And I connected the bluetooth module, which is 4 wires

GNB & vlot to breadboard an the other two pins to Arduin TX , RX  pins 

Then the screen also arrived with four wires

Two grounds and voltages on the e board

and others on A4 & A5 

Then downloaded the bluetooth control software on my mobile phone

I used the Arduino program to write the codes and download the screen driver library

And write codes to operate the button, screen and bluetooth according to the commands sent from the mobile  .

This smart circuit is built to be used via Bluetooth

Where Bluetooth sends three commands

The first operates the buzzer

And the second turn on the screen with a message written in it a question

Press the green button

The third is also a message with a question, press the green button

This is done by using the attached code, where a character is reserved

I used the IF conditional code to place the orders

Where the first command says if the value sent from Bluetooth == 1

He makes the button play a short piece of music

Also, if Bluetooth sends command number 2

The screen displays the first question

Also, if you send an order number 3

The screen displays the last question

The smart circuit has been tested and works perfectly and functional 

Attached are three video files of the circuit and a video of the Bluetooth mobile application

and attached file Arduino code (*.ino)

the challenge :

The first challenge: Bluetooth did not work at first because I connected the wires According to the writing on the board 

TX TO TX 

RX TO RX .

And write on the Arduino

Then the instructor  advised me to reverse the wires where the sender communicates with the receiver

And vice versa

This modification succeeded and the bluetooth worked

The second challenge:

I was putting in the code for the screen

Line number (1 & 2 ) , the words did not appear on the screen

After searching and seeing examples on screen

I found out that the numbering of the screen lines is zero and one

And it has 16 sixteen columns

This number and line place must be taken into account when writing the code

THE idea this week IT'S FOR MY FINAL PROJECT 

It is about using Bluetooth to send commands

via mobile

Show a question on the screen

IT'S the first step then in my project i will add push button to answer this questions 

and make action when it's right or Wrong