Difference between revisions of "BT Shield (Master Slave)"

From ITEAD Wiki
Jump to: navigation, search
(Mode Switch)
(States LED)
Line 80: Line 80:
  
 
===States LED===
 
===States LED===
 +
When power on and disconnect the port, states LED blinks 1time/2s ;
 +
when the module connect and open the serial port, states LED blinks
 +
2times/s.
  
 
==AT command==
 
==AT command==

Revision as of 06:16, 22 May 2014

Overview

ITEAD BT SHIELD (MASTER SLAVE).jpg

BT shield V2.2 is a serial port Bluetooth module (with master and slave mode) breakout board, it’s compatible with Arduino and IFlat-32, it can directly plug on Arduino/IFlat-32 board, use UART port for communication with Arduino/IFlat-32 or PC.

Specifications

Microprocessor CSR BC417
PCB size 53.3mm X 47mm X 1.6mm
Indicators PWR,State
Power supply 5V DC
IO 6
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

Hardware

ITEAD BT SHIELD (MASTER SLAVE)1.jpg

UART Multiplexer (For free UART connection setting)

You can use the jumper to connect the TXD and RXD pins of HC-05 to D0, D1, D4~D7 pin of Arduino.

ITEAD BT SHIELD (MASTER SLAVE)2.jpg

When using the connection as Figure 3, the BT shield connects to the ATMega328 chip on board.

ITEAD BT SHIELD (MASTER SLAVE)3.jpg

When using the connection as Figure 4, the HC-05 connects with the FT232RL chip, and the FT232RL connect to PC by USB. Whit this configuration you can use the serial software on PC to control or configure the HC-05 module.

ITEAD BT SHIELD (MASTER SLAVE)4.jpg

Except the 2 configurations above, you can connect the TXD and RXD to any other pins from D4-D7, and using the software-serial library to control the HC-05 module.

ITEAD BT SHIELD (MASTER SLAVE)5.jpg

Mode Switch

The Mode Set Switch is connected to PIO11, when it is pushed to CMD and powered on, the HC-05 enter command mode, HC-05 module can receive and response AT command in this mode. When it is pushed to DATA and powered on. The HC-05 enters data mode and will not accept AT command.

States LED

When power on and disconnect the port, states LED blinks 1time/2s ; when the module connect and open the serial port, states LED blinks 2times/s.

AT command

Download

Useful Links