I just wanted to control LED and buzzer with Bluetooth to finally do the last assignment. my inspiration from here. I chose this project because it looks easy.
arduino cable
bluetooth module
arduino board
LEDs
jumpers For connecting electrical components with each other.
buzzer
breadboard
I used Arduino C Text to write the code in Arduino software .
wiring diagram
Connect +5V of HC05 bluetooth module to 3.3V arduino pin
Rx of module to Tx(1) of Arduino
Tx of module to Rx(0) of Arduino.
Ground the gnd pin.
Connect the LED 1 to pin 13 through a resistor(1k)
LED 2 to pin 8 through a resistor(1k)
and ground the other(shorter edge).
Positive end of Buzzer is connected to pin 4 and another pin is grounded.
Connect +5V of HC05 bluetooth module to 3.3V arduino pin
Rx of module to Tx(1) of Arduino
Tx of module to Rx(0) of Arduino.
Ground the gnd pin.
Connect the LED 1 to pin 13 through a resistor(1k)
LED 2 to pin 8 through a resistor(1k)
and ground the other(shorter edge).
Positive end of Buzzer is connected to pin 4 and another pin is grounded.
connect your smartphone with hc05 through Bluetooth. Now send the data to the Arduino. Data in our case is character "a" and character "b". Sending "a" will blink the three LEDs and will sound the buzzer. By sending "b" all the above action stops.
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I faced a problem with downloading the code on arduino
I didn't choose the port (com) .Maram drew my attention to this point.
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