HC-05 master and slave integrated blue-tooth module with bottom plate wireless serial port transparent communication HC-05 blue-tooth module

Know how to use and then buy, no technical support. Main sales of foreign trade.

HC-05 master-slave integrated Blue-tooth module

With clear button

Warm Tip: Do not connect the power supply to the signal pin, it will directly burn out the module
ensure that each module is tested. Low profit, do not provide technical support and return service
please think clearly before buying!

1. module parameters:

• 1.PCB size: 37.3mm (long) * 15.5mm (wide)

• 2. Weight: 3.5g

• 3. Input voltage: 3.6V -6V, prohibit more than 7V

• 4. Anti-reverse connection of power supply, and reversed connection module does not work

• 5. Lead-out 6 pins: EN/VCC/GND/RXD/TXD/STATE (Blue-tooth state lead-out pin, output low level is not connected, output high level after connection)

• 6. With connection status indicator, LED flash indicates that there is no Blue-tooth connection; LED slow flash indicates that AT command mode is entered

• 7. Onboard 3.3V voltage regulator chip, input voltage DC 3.6V-6V; When not paired, the current is about 30mA (because the LED lamp flashes, the current is in a changing state); After successful pairing, the current is about 10mA

• 8. The interface level is 3.3V, which can be directly connected to various single-chip computers (Arduino/51/AVR/PIC/ARM/MSP430, etc.), and 5V single-chip computers can also be directly connected. Direct connection to the microcontroller serial port, can not pass the MAX232 chip!

• The effective transmission distance in open areas is 10 meters, and it is also possible to exceed 10 meters, but the connection-quality is not guaranteed.

• 10. After successful pairing, it can be used as a full-duplex serial port. No need to understand any Blue-tooth protocol, but only supports 8 data bits, 1 stop bit, no parity communication format. This is also a common communication format and does not support other formats!

• 11. Press the button to power on the Blue-tooth module to enter AT mode, set parameters and query information

• 12. The master and slave modes can be switched through AT commands.

• 13. The default baud rate of the module is 9600, the default pairing password is 1234, and the default name is HC-05

• 14. With transparent heat shrinkable tube protection

2. wiring method:
VCC: connected to the positive pole of the power supply
GND: connected to negative pole of power supply
RXD: receiving end, Blue-tooth module receives data sent from other devices;
TXD: sender, Blue-tooth module to send data to other devices;
EN: enable terminal, 3.3V when entering AT mode is required
3. Shipping List
1.HC-05 1 Blue-tooth module with bottom plate (tested, protected by transparent heat shrinkable tube)