The HC-05 Bluetooth module is a versatile and widely-used device for wireless communication. Here are some key details about it:
Specifications:
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Operating Voltage: 4V to 6V (typically 5V)
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Operating Current: 30mA
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Range: Up to 100 meters
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Bluetooth Protocol: Bluetooth v2.0+EDR (Enhanced Data Rate)
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Frequency: 2.4GHz ISM band
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Modulation: GFSK (Gaussian Frequency Shift Keying)
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Data Rate: Asynchronous: 2.1Mbps (Max) / 160 kbps, Synchronous: 1Mbps/1Mbps
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Security: Authentication and encryption
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Profiles: Serial Port Profile (SPP)
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Dimensions: 26.9mm x 13mm x 2.2mm
Pin Configuration:
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Enable/Key: Toggles between Data Mode (low) and AT Command Mode (high).
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Vcc: Powers the module (connect to +5V supply).
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Ground: Connect to system ground.
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TX (Transmitter): Transmits serial data.
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RX (Receiver): Receives serial data.
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State: Indicates the status of the module.
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LED: Shows the module’s status (blinking patterns indicate different modes).
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Button: Used to control the Key/Enable pin.
Modes of Operation:
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Data Mode: Used for normal communication.
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Command Mode: Used to configure the module using AT commands.
Default Settings:
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Bluetooth Name: “HC-05”
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Password: 1234 or 0000
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Baud Rate: 9600 (Data Mode), 38400 (Command Mode)
The HC-05 module is ideal for projects requiring wireless communication between microcontrollers (like Arduino) and Bluetooth-enabled devices (like smartphones)
Is there a specific project you’re planning to use the HC-05 for?
Customer Questions and answers :
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