• Jumper wires: I used MM wires to connect the circuit.

• Breadboard: to place the components on it to ease the connecting process. 

• 220-ohm resistors: to reduce the flow to the led (each color leg connected to a resistor)

• I used tinkercad just to see the connection of the circuit before do the physical one.

the buzzer is on pin 8, cathode on GND

RGB LED:

red on 7, green on 6, blue on 5 and cathode on the GND. each one has a 220 resistor.

for the Bluetooth module:

the RX is on the TX  (on for recieve and the other for send)

th TX is on the RX (on for recieve and the other for send)

the GND is on the GND 

the VCC is on the 5v power on arduino

• first and before setup i need to define my pins on arduino

• while definition, i needed to define the (int) of the colors of the rgb (RGBset)

• as the RGB we need to make the ticktock defition tone

• after that, at the setup i need to set the pinmodes (the outputs or the inputs)

• after that, at the setup i need to set the pinmodes (the outputs or the inputs)

• then, at the loop we need to write the main code.

in my circuit i need the code to have 2 conditions (if and else)

in the if and while the buzzer is on and has its tone the RGB LED is colored Green.

and in else the buzzer is off then the RGB is red colored.

• to make the buzzer work "forever" i needed to make a if condition for it 

• after ending the code on arduino and finished the connection of the circuit 

we need to upload it to the arduino (before click on upload make sure that the RX, TX of the module is off) 

• open the application (Arduino Bluetooth control)

• then select your arduino device and connect it 

• then open the button& slider to cotrol our circuit with the chars we defined in code (1,2)