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The OSEPP Bluetooth board introduces Bluetooth connectivity to its users with the Bluegiga WT11 class 1 Bluetooth 2.1 + EDR module. With more than 10 supported Bluetooth profiles this board can be used for a multitude of BTrelated projects.

Microcontroller ATmega328P
Clock Speed 16 MHz
Flash Memory 32 KB
Operating Voltage 5V
Input Voltage 1.25.5 V
Digital I/O Pin Count 14 (including 6 for PWM output)
Analog Input Pin Count 6
Other Connections Bluetooth 2.1 + EDR (select BT profiles)ICSP for ATmega328PDC power screw terminal
Dimensions 3.23 x 2.13 x 0.57 inches (82.0 x 54.0 x 14.5 mm)
Power Source External DC power supply


8bit AVR RISCbased microcontroller running at 16 MHz
Bluegiga WT11 class 1 Bluetooth 2.1 + EDR module
Input voltage can be as low as 1.2V
Connects to a computer via Bluetooth serial COM
ICSP header for programming microcontroller
Compatible with existing Arduino software libraries
Compatible with the Ethernet and Motor Controller Shields


The highefficiency lowsupply current stepup DC/DC converter allows an input voltage of as little as 1.2V to be used and as high as 5.5V.

The ATmega328P comes with the Arduino bootloader preloaded. There is an ICSP (InCircuit Serial Programming) header for the ATmega328 to optionally replace the bootloader.

The Bluegiga WT11 class 1 Bluetooth 2.1 + EDR module contains an integrated Bluetooth radio antenna and iWRAP protocol stack. The Bluetooth stack offers a slew of profiles such as Serial Port Profile (SPP) Dialup Networking Profile (DUN) HandsFree Profile (HFP) Headset Profile (HSP) Human Interface Device (HID) A/V Remote Control Profile (AVCRCP) Device Identification Profile (DI) Phone Book Access Profile (PBAP) Object Push Profile (OPP) File Transfer Profile (FTP) and Bluetooth Health Device Profile (HDP). Furthermore the WT11 firmware is upgradeable via serial pins that are exposed on the board. For more details visit:

The input and/or output pins are brought out to premounted headers which enable a convenient way to prototype projects without the need of soldering or desoldering.