Existing products such as contact microphone, or Mogees has been designed for music use. We wanted a product designed for home use with a wide inter-operability with existing connected products.
Vibrato is configured from an Android application. It is a Bluetooth smart device. Here are details about project: http://fablab.ensimag.fr/index.php/Vibrato
We would be very interested if some people join this project. Recently a similar project called Knocki was launched.
If you want an open source alternative, help us to improve Vibrato!