Radio Chip: CSR BC417
Memory: External 8Mbit Flash
Output Power: -4 to +6dbm Class 2
Range: Up to around 60 feet (20 m)
Sensitivity: -80dbm Typical
Bit Rate: EDR, up to 3Mbps
Voltage: 3.3 to 5VDC
Current: 40mA max
The default configuration is:
Baud Rate: 38400 bps
Data : 8 bits
Stop Bits: 1 bit
Parity : None
Bluetooth Board Dimensions (including bluetooth module)
Command Mode / Data Mode
The module has two modes of operation, Command Mode where we can send AT commands to it and Data Mode where it transmits and receives data to another bluetooth module.
The default mode is DATA Mode.
There are two ways to get into Command Mode
1. Connect the CMD pin high before applying power to the module.
This will put the module into command mode at 38400 baud. This is useful when you dont know the baud rate the module is set to.
2. Apply power to the module then pull the CMD pin high.
This will enter command mode at the currently configured baud rate. This is useful if you want to send AT commands from say a microcontroller as the CMD pin can be controlled from one of the microcontroller pins.
Commands are sent to the module in UPPERCASE and are terminated with a CR/LF pair
Command Mode Commands
Apart from the commands described below for configuring master/slave operation, the following useful commands are available.