Module Slave Wireless Serial Board x3
1) Wireless serial bluetooth port.
2) With free power adapter bottom board come with well power
User can connect 3.3 to 5VDC and connect TX and RX to your
control IO (general 3.3 to 5V digital input output of MCU or arduino IO is ok,
or general TLL IO)
3) Easy to connect this module with PC, just search and key
4) With white SMD LED on the adapter board, can see the
Bluetooth connection status.
1) Connect the wiring, power up, while the device is not
connected, the bluetooth module board has a white LED flashing
2) At PC side, search bluetooth device.
3) Found name called "LINVOR" device
4) Connect it, and passcode is "1234"
5) While connection is ok, you can see the LED become always
Basically, user can only use 2 to 5 pin in most of the
||For configuration use (normally not
||3.3 to 5V input|
||TX transmit pin|
||RX receive pin|
port bluetooth, Drop-in replacement for wired serial connections, transparent
usage. You can use it
simply for a
serial port replacement to establish connection between MCU and GPS, PC to your
embedded project and etc.
Default serail port setting
: 9600, N, 8, 1
Pairing code :
Running in slave role: Pair with BT dongle and master
Coupled Mode: Two modules will
establish communication automatically when powered.
PC hosted mode: Pair the module
with bluetooth dongle directly as virtual serial.
Bluetooth protocal :
Bluetooth Specification v2.0+EDR
Frequency : 2.4GHz ISM
: GFSK(Gaussian Frequency Shift Keying)
Emission power : <=4dBm,
Sensitivity : <=-84dBm at
Asynchronous: 2.1Mbps(Max) / 160 kbps, Synchronous:
Security : Authentication
Profiles : Bluetooth serial
CSR chip : Bluetooth
Wave band :
2.4GHz-2.8GHz, ISM Band
Protocol : Bluetooth
Power Class :
Voltage : 3.3
Current : Paring - 35mA, Connected
: -40~ +105 Degrees Celsius
User defined Baud rate :
4800, 9600, 19200, 38400, 57600, 115200, 230400,460800,921600
to indicate the module state.
After powered on, flashing intervals differ in different
PIO9 is used to
control LED indicating paring. It will be steady on when paring is
PIO11, module state switching
pin. HIGH -> response to AT command; LOW or floating -> regular work
With build-in reset circuit,
reset is completed automatically after powered on.
Steps to set to
Set PIO11 HIGH with a 10K
resistor in between.
Power on, module comes into AT
Command Response Status
Open HyperTerminal or other
serial tool, set the baud rate 38400, 8 data bits, 1 stop bit, no parity bit,
Via serial port, send characters
"AT + ROLE = 1 r n",if successful, return "OK r n", where r n is carriage
Set PIO11 LOW, re-power, then in
Master state, automatically search for slave module and
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