HC-05 Bluetooth Serial Wireless Module

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The HC-05 Bluetooth Serial Wireless Module is a versatile communication module that enables wireless serial communication between devices over Bluetooth. It is commonly used in electronics projects and applications requiring wireless data transfer, such as remote control systems, data logging, and wireless sensor networks. The module operates on a voltage supply range of 3.6V to 6V, with an onboard LDO (Low Drop-Out) regulator providing a stable 3.3V output voltage for its internal components. It supports serial communication at a 3.3V logic level and features six pins for various functions, including state monitoring, data transmission and reception, ground, voltage supply, and enabling/disabling the module. Additionally, it includes a button that allows you to enter AT command mode for configuring the module's settings.

Specificatoins of HC-05 Bluetooth Serial Wireless Module:

  • Power Supply Voltage: 3.6V to 6V (regulated to 3.3V by the onboard LDO).
  • Data Voltage Level: Operates at a 3.3V logic level.
  • Interface: The module has six pins:
  • State (State monitoring)
  • RX (Receive data)
  • TX (Transmit data)
  • GND (Ground)
  • VCC (Voltage supply)
  • EN (Enable/Disable control)
  • AT Command Mode: Includes a button that, when booting up, if you press and hold the button, you will enter AT command mode for configuring the module's settings.
  • Bluetooth Version: Supports Bluetooth 2.0+EDR (Enhanced Data Rate).
  • Communication Range: Typical communication range of up to 10 meters (may vary depending on environmental factors).
  • Data Rate: Supports adjustable data rates up to Asynchronous: 2.1Mbps(Max) / 160 kbps, Synchronous: 1Mbps/1Mbps.
  • Communication Mode: Can operate in both master and slave modes.
  • Compatibility: Compatible with a wide range of microcontrollers and development boards.
  • Dimensions: 43x16mm

Features of HC-05 Bluetooth Serial Wireless Module:

  • Versatile Communication: Enables wireless serial communication over Bluetooth, making it suitable for various applications.
  • Easy Configuration: AT command mode allows you to configure the module's settings and behaviors.
  • Wide Voltage Range: Operates on a voltage supply range of 3.6V to 6V, with an onboard regulator providing a stable 3.3V output.
  • Logic-Level Compatibility: Works at a 3.3V logic level, making it compatible with most microcontrollers.
  • Usage Tip:
  • Ensure that the module is powered within its specified voltage range (3.6V to 6V) and that the logic levels are compatible with your microcontroller or system.
  • Refer to the module's datasheet or documentation for a list of AT commands and their descriptions when configuring its settings.
  • Caution:
  • Handle the module with care to avoid damage to its components and pins.
  • Be cautious with the AT command mode to prevent unintended configuration changes.
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