A more detailed description of my project can be found at: IoG homepage if you still need more information, feel free to contact me. Contact information is also available at the previous mentioned site.
Transform your guitar into an IoT device using an Arduino Nano, RaspberryPi and Azure IoT hub
I had a similar idea like yours serval days ago.so,how do you use this data?just in your phone app?I think you also can control some other IOT devices by this data,for example colorful lights.