Arduino HC-05 HC06 Wireless Bluetooth Module Serial Port TX RX Module
 

HC-05: Two Mode - Master/Slave mode 

• Bluetooth v2.0+EDR Compliant  - only pairing to one device
• 2.4GHz ISM band frequency  - only pairing to one device
• Supported baud rate: 9600, 19200,38400(default), 57600, 115200, 230400, 460800.
• Speed: Asynchronous: 2.1Mbps(Max) / 160 kbps, Synchronous: 1Mbps/1Mbps
• Typical ‐80dBm sensitivity.
• Up to +4dBm RF transmit power.
• Power supply: 3.6V to 6V DC
• PIO control.
• UART interface with programmable baud rate.
• Built-in antenna.
• Coverage up to 30ft.
• Dimension:  38mm x 15mm x 2.35mm

Connection for HC-05:

• VCC: positive power supply.
• GND: negative power supply.
• RXD: reading 3v, need resistor divider- to reduce volt to 3.3v if uno is use
• TXD: sending end
• EN:used end,need to enter mode AT with voltage 3.3V.

HC-06:  Slave Mode Only

• Bluetooth v2.0+EDR Compliant  - only pairing to one device
• UART interface and with baud rate setup function
• Built-in antenna.
• Incredible small size with 3.3V input, and RoHS Compliant
• Working current: While pairing 30mA, paired 8mA
• Frequency: 2.4GHz ISM band
• Baud rate is 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200 user manually set up.
• Default Baud Rate: 9600,8,1,n
• Support for 8Mbit External Flash Onboard
• Support for 802.11 Co-Existence Product Description  
• Storage Temperature: -40 to 85 degrees Celsius
• Size : 28 mm x 15 mm x 2.35 mm

Connection for HC-06:

• VCC: positive power supply.
• GND: negative power supply.
• RXD: reading 3v, need resistor divider- to reduce volt to 3.3v if uno is use
• TXD: sending end

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