BT Shield (Slave)

From ITEAD Wiki
Jump to: navigation, search


BT shield (salve).jpg

BT Shield V2.1 is a Serial port Bluetooth module (Slave) breakout board, and it’s compatible with Arduino and IFlat-32, it can directly plug in with Arduino/IFlat-32 board, use the UART port for communicating to Arduino/IFlat-32 or FT232.

Go shopping BT Shield (Slave) (IM120417006)


Microprocessor CSR BC417
PCB size 53.3mm X 47mm X 1.6mm
Indicators PWR,State
Power supply 5V DC
IO 3
Communication Protocol UART/Bluetooth 2.0
RoSH Yes

Electrical Characteristics

Specification Min Type Max Unit
Power Voltage 4.5 5 5.5 VDC
Input Voltage VH (Target Voltage = 3.3V) 3 3.3 3.6 VDC
Input Voltage VH (Target Voltage = 5V) 4.5 5 5.5 V
Input Voltage VL: -0.3 0 0.5 V
Current Consumption - 20 40 mA


BT shield (salve)1.jpg

Pad Name Type Description
RX/TX I/O UART communication Port (Depend on switcher 4)
TX/RX I/O UART communication Port (Depend on switcher 4)
State O State Direction
Switcher Name Description
4 UART Communication Switch Connect to broad or FT232
5 Communication Voltage Switch Set the interface voltage
LED Name Description
6 PWR When power on, the PWR LED light.
7 State \"When the module in standby mode, the State LED will alternating light off. When the serial port open, the State LED light.\"

AT command


Slave, 9600 baud rate, N, 8, 1. Pincode 1234

AT command:

1. Communications Test:

Sent : AT

receive : OK

2. Change baud rate:

Sent : AT+BAUD1

receive : OK1200

Sent : AT+BAUD2

receive : OK2400









Baud rate setting can be save even power down.

3. Change Bluetooth device name:

Sent : AT+NAMEdevicename

receive : OKname

(devicename is the name you want the device to be , and it will be searched with this name)

Name setting can be save even power down.

4. Change Pincode:

Sent : AT+PINxxxx

receive : OKsetpin

(xxxx is the pin code you set)

Pin code can be save even power down.


Colors Shield1.jpgAttribution Non-Commercial Share Alike

cc by-nc-sa


Datasheet for BT Shield (Slave)

Schematic for BT Shield (Slave)

Demo Code for BT Shield (Slave)

Useful Links