This is a where a Power Mosfet comes in. With the help of the Power Mosfet, we can use the low voltage output from the Arduino ports to control high voltage/current loads -the popular “12V LED strips” ...

Whether you’d like to do some real-time logging of data, or just want to control a project with your Android phone, [Thomas]’s Arduino-Android Bluetooth connection instructable is sure … ...

The easiest way to add sound to an "arduino"-level project is to get a little MP3 player board, and just wire the switches to arduino pins however you must (considering the voltage levels of the two).

He takes a garden-variety Arduino and a cheap Bluetooth interface board and then controls it from Chrome. You can see the video below. The HM-10 board is cheap and could connect to nearly anything.

The Bluetooth Controlled Speech Recognition Unit: This bad boy is simple, and easy to use. With the help of the free AMR_Voice App, you can control 10x Arduino compatible outputs.

The Bluetooth from the phone or tablet sends the Arduino commands to keep your food moving in a specific way. This is a pretty handy app and gadget to have around if you like to keep busy rather ...