Week 8 - Journal

1. First, I planned my circuit on tinkercad:

• First, I picked the components, and I used an old shared file on the internet that had the bluetooth module and I tinkered and edited it.

• I connected the rgb led to the resistors.

• I connected the RGB led's end to digital pin R, G, & B to 8, 10 & 9 respectively and the resisters to the ground.

• I connected the Bluetooth module (RX - TX - GND - VCC ) to ( TX (1) - RX (0) - 5V - GND ) on the arduino respectively.

• I added the buzzer to digital pin 2.

2 . Then, I worked on my code on arduino :

• I defined my components and their pins using the # define function.

• I added the bluetooth related coding setup ( Char Incoming data ).

• In my ( Void Setup) section: I defined the (rgb led & buzzer) as my 2 OUTPUTS, and digital wrote them as low. Also, I initiated the serial function.

• In my (Void Loop) section: I started to design the program according to the buttons. First, it's important to understand that we have 4 buttons which translate to incoming datas:

1st button ( Low - High ) = ( 0, 1 )

2nd button ( Low - High ) = ( 2, 3 )

3rd button ( Low - High ) = ( 4, 5 )

4th button ( Low - High ) = ( 6, 7 )

• I added the condition while serial available equal zero, the incoming data will be read from the serial.

• I then added an If condition ( using incoming char == 'value' function ) ( with my program's functions), stating that :

if button 1 is low / incoming data is 0 = digitalwrite the rgb and the buzzer as low as well.

if button 1 is High / incoming data is 1 = digitalwrite the rgb RED as high and the buzzer as high as well.

if button 2 is low / incoming data is 2 = digitalwrite the rgb and the buzzer as low as well.

if button 2 is High / incoming data is 3 = digitalwrite the rgb GREEN as high and the buzzer as high as well.

if button 3 is low / incoming data is 4 = digitalwrite the rgb and the buzzer as low as well.

if button 3 is High / incoming data is 5 = digitalwrite the rgb BLUE as high and the buzzer as high as well.

• I had trouble connecting the processing code to my bluetooth module as it didn't have the names provided in the video but I found that the windows differ from the mac. Rawan had asked this qyestion on the slack. Thank you Samir for the answer !!

• I also at first didn't understand how to use the bluetooth module in the tinkerCad, I found that Manar had asked that question on the troubleshooting channel.. Thank you esraa for the answer :")

The bluetooth module.