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5.2 Wire Connection
Here is connection diagram between Bluetooth module and RS232 serial port from computer.
Bluetooth
module
RS232 serial port
from computer
RS232 wire
Fig 5.2 Connection diagram
Use a RS232 wire to connect Bluetooth module and computer RS232 port.
The problem is both computer port and Bluetooth module port are female RS232 port , so a wire
with both two male RS232 port is needed.
5.3 Set Bluetooth encryption password
There are two operating mode of Bluetooth module: parameter setting mode and communication mode. You
can switch modes by pressing the small button on module. You must let Bluetooth module working in param-
eter setting mode before set parameter. After set finished, press the button to switch module to communication
mode again.
Follow the following step to check or set encryption password
1) Connect Bluetooth module to computer by RS232 wire.
2) Press module mode button to switch module to parameter setting mode.
3) Run Bluetooth RS232 Configuration software, select correct serial port number and select flow con-
trol to “None”.
4) First Click “Query” to check the existing settings.
5) Then tick encryption check box and input password.
6) Click “Set” to apply, and wait for setting finish.
7) Click “Query” to check the setting result.
8) Press module mode button again to switch module to communication mode.
Fig 5.3 Set Bluetooth encryption password