There's good news for Arduino board users. Now you don't have to buy a separate BT-Module. Arduino BT(Bluetooth) is here!
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| Arduino BT |
The Arduino BT is an Arduino board with built-in Bluetooth module, allowing for wireless communication.The Arduino BT is a microcontroller board originally was based on the ATmega168, but now is supplied with the 328 (datasheet) and the Bluegiga WT11 bluetooth module. It supports wireless serial communication over bluetooth (but is not compatible with Bluetooth headsets or other audio devices).
It has 14 digital input/output pins (of which 6 can be used as PWM outputs and one can be used to reset the WT11 module), 6 analog inputs, a 16 MHz crystal oscillator, screw terminals for power, an ICSP header, and a reset button.Each of the 14 digital pins on the BT can be used as an input or output, using pinMode(), digitalWrite(), and digitalRead() functions. They operate at 5 volts. Each pin can provide or receive a maximum of 40 mA and has an internal pull-up resistor (disconnected by default) of 20-50 kOhms.
The ATmega328 has 32 KB of flash memory for storing code (of which 2 KB is used for the bootloader). It has 1 KB of SRAM and 512 bytes of EEPROM (which can be read and written with the EEPROM library).
In short, it contains everything needed to support the microcontroller and can be programmed wirelessly over the Bluetooth connection.It can be used to implement various wireless projects like Quadcopter and cellphone controlled car.
Summary:
Microcontroller - ATmega328
BT Module - 2.1 WT11i-A-AI4
Operating Voltage - 5V
Input Voltage - 2.5-12 V
Digital I/O Pins - 14 (of which 6 provide PWM output)
Analog Input Pins - 6
DC Current per I/O Pin - 40 mA
DC Current for 3.3V Pin 500 mA (with a 1.5A capable power source)
DC Current for 5V Pin 1000 mA (with a 1.5A capable power source)
Flash Memory - 32 KB (of which 2 KB used by bootloader)
SRAM - 2 KB
EEPROM - 1 KB
Clock Speed - 16 MHz
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