What is the primary purpose of connecting the HC-05 Bluetooth module with an Arduino in this project?

• To power the Arduino board.

• To control an LED or other DC loads from a smartphone.

• To transfer large files wirelessly.

• To measure environmental data.

What type of components are used to create a voltage divider for the communication between the Arduino and the Bluetooth module?

• Capacitors

• Inductors

• Resistors

• Diodes

What essential step must be performed before uploading code to the Arduino when the Bluetooth module is connected?

• Connect the Arduino to a 9V battery.

• Remove the wires from the TX and RX pins of the Arduino.

• Ensure the smartphone is paired with the Bluetooth module.

• Press the reset button on the Arduino.

Are you enjoying the video lesson?

• Yes

• No

What type of component is initially controlled by the smartphone in the demonstration?

• A DC motor

• A Light Emitting Diode (LED)

• A 220V AC appliance

• A transistor

In the expanded setup, which Arduino pin is configured to control the DC motor?

• Pin 13

• Pin 8

• Pin 9600

• Pin 2