HC-05 Bluetooth Module – 6 Pins

33.00

The HC-05 is a popular Bluetooth module which can add two-way (full-duplex) wireless functionality to your projects.

In stock (can be backordered)

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Description

HC-05 Pinout Configuration

Pin Number Pin Name Description
1 Enable / Key This pin is used to toggle between Data Mode (set low) and AT command mode (set high). By default, it is in Data mode.
2 Vcc Powers the module. Connect to +5V Supply voltage.
3 Ground Ground pin of module, connect to system ground.
4 TX – Transmitter Transmits Serial Data. Everything received via Bluetooth will be given out by this pin as serial data.
5 RX – Receiver Receive Serial Data. Every serial data given to this pin will be broadcasted via Bluetooth.
6 State The state pin is connected to on board LED, it can be used as feedback to check if Bluetooth is working properly.
7 LED Indicates the status of Module.

  • Blink once in 2 sec: Module has entered Command Mode
  • Repeated Blinking: Waiting for connection in Data Mode
  • Blink twice in 1 sec: Connection successful in Data Mode
8 Button Used to control the Key/Enable pin to toggle between Data and command Mode.

HC-05 Default Settings

  • Default Bluetooth Name: “HC-05”
  • Default Password: 1234 or 0000
  • Default Communication: Slave
  • Default Mode: Data Mode
  • Data Mode Baud Rate: 9600, 8, N, 1
  • Command Mode Baud Rate: 38400, 8, N, 1
  • Default firmware: LINVOR

HC-05 Technical Specifications

  • Serial Bluetooth module for Arduino and other microcontrollers
  • Operating Voltage: 4V to 6V (Typically +5V)
  • Operating Current: 30mA
  • Range: <100m
  • Works with Serial communication (USART) and TTL compatible
  • Follows IEEE 802.15.1 standardized protocol.
  • Uses Frequency-Hopping Spread spectrum (FHSS)
  • Can operate in Master, Slave or Master/Slave mode.
  • Can be easily interfaced with Laptop or Mobile phones with Bluetooth.
  • Supported baud rate: 9600,19200,38400,57600,115200,230400,460800.

Documentation