HC-05 Bluetooth Module for RC Car Arduino

HC-05 Bluetooth Module HC05 with TTL Output is a Bluetooth module for use with any microcontroller.  It uses the UART protocol to make it easy to send and receive data wirelessly. To setup Wireless Serial Communication, HC-05 Bluetooth Module is most demanding and popular due to its low price and extremely high features.

This module can be used in Master or Slave Mode and easy switchable between these two modes, By default Slave mode is configured. Modes can be changed using AT Commands.

The slave mode in HC-05 cannot initiate a connection to another Bluetooth device, but can accept connections. Master mode can initiate a connection to other devices.

Pin 1: It is status pin. It is used to show the status of the module whether it is connected to some device or not and some other operation like switching between master and slave. This same pin is connected to an onboard LED. That blinks depending upon the different operations.

Pin 2: It is RX(receiver) pin. It is used to receive data from the HC-05. You have to connect this pin to the TX(transmitter) pin of the Arduino UNO board.

Pin 3: It is TX(transmitter) pin. It is used to send data to the HC-05. You have to connect this pin to the RX(receiver) pin of the Arduino UNO board.

Pin 4: It is GND(ground) pin. It is used to connect GND to the HC-05 module.

Pin 5: It is VCC(power) pin. It is used to connect 5V to the HC-05 module.

Pin 6: It is enable pin. It is used to switch between master and slave configuration.