Blend Micro, by ReadBearLab is an integrated developement board “blend”ing Arduino with Bluetooth 4.0 Low Energy (aka BLE or Bluetooth Smart) into a single board.
In the following videos, you can see how easy it is to use Blend Micro with the companion Apps for both iOS and Android. See how to control digital output, PWM and Servo, obtain readings from digital or analog inputs.
On their website you can find some sample codes on how to write your own Apps too. They soon will provide a boot loader update which allow the Blend Micro to be programmed over-the-air from Bluetooth Smart Ready portable devices and PCs, no USB wire is required for uploading the sketch.
[original story: Arduino Blog]