Arduino Bluetooth

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Arduino Bluetooth.jpg

This is the very popular Arduino platform with a Bluetooth® serial connection in place of the USB connection. Now you can have Arduino without wires!

The Bluetooth® module used is the Bluegiga WT11, iWrap version. The Bluetooth® module can be configured with commands set over the serial port from the ATmega168.

The ATmega168 comes preloaded with a bootloader that allows you to upload sketches to the board via the Bluetooth® connection. The bootloader source code is available in the Arduino SVN repository.



  • The use of a DC-DC converter, allowing the board to be powered with a minimum of 1.2 V, but with a maximum of 5.5 V. Higher voltages or reversed polarity in the power supply will kill the board.
  • A surface-mounted ATmega168 (as with the Arduino Mini). This doubles the amount of space available for your sketches and adds three more PWM pins and two more analog inputs.
  • Pin 7 is connected to the reset pin of the Bluetooth® module.
  • Only use serial communication at 115200 baud; this is the speed that the module has been configured to use.


This page is a Component on bildr. Components are pages about specific parts, and include connection details and code when available.

NOTE: All information contained within this article is pure opinion. Although this article is intended to help people, it may contain faulty or misleading information. This article is not to be considered professional opinion or advice, and is in no way a replacement for reading all safety/instructional documentation. Always remember to protect yourself when handling/using hazardous materials, as well as test new techniques before using them on projects/work intended to be handed in or used.

bildr and its contributers take NO responsibility for the information contained within.