HC-06 :
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Bluetooth protocol: Bluetooth 2.1+ EDR standard
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USB protocol: USB v1.1/2.0
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Operating frequency: 2.4GHz ISM frequency band
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Modulation mode: Gauss frequency Shift Keying
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Transmit power: ≤ 4dBm, second stage
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Sensitivity: ≤-84dBm at 0.1% Bit Error Rate
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Transmission speed: 2.1Mbps(Max)/160 kbps (Asynchronous)； 1Mbps/1Mbps (Synchronous)
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Safety feature: Authentication and encryption
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Supported configuration: Bluetooth serial port (major and minor)
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Supply Voltage: 5 V DC 50mA
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Operating temperature: -20 to 55℃
HC-05 :
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1. core module uses HC-05 slave module, pins include VCC, GND, TXD, RXD, KEY, Bluetooth state pin (STATE), output low if not connected, high if connected
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2. LED indicates the connection status of Bluetooth, quick flash means no connectivity, slow flash means entering AT mode, double flash means Bluetooth is connected and the port is open.
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3. BOttom plate has anti-reverse diode,with 3.3V LDO. input volt is 3.6~6V; current about 30mA with no pairing, current about 10mA after pairing. Input volt should be within 7V!
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4. Pin level is 3.3V. It can be directly connected with various MCUs (51, AVR, PIC, ARM, MSP43 etc.) , also 5V MCUs, no need for MAX232 and cannot be connected with MAX232!
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5. In open area, effective range is 10m (power level is CLASS 2). It’s possible to be more than 10m. But the connecting quality cannot be guaranteed.
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6. After paring , it can be used as full duplex serial port. No need for knowing any Bluetooth protocol. It supports 8-bit data bits, 1 stop bit; can set odd-even check communication format, which is the most common communication format; do not support other formats.
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7. Can access AT command to set parameters, and query information by pulling high pin 34.
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8. Small size (3.57cm*1.52cm), SMD production, ensure quality; with transparent heat shrinkable film for dustproof and anti-static function.
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9. Use AT-command to switch from master or slave mode, and to connect to specific devices.
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10. Support standard baud rate of 4800bps~1382400bps.
