The part of the integrated interface on my final project, has already a temperature sensor with integrated bluethooth .

I needed to have a device in which my temperature sensor indicates degrees Celsius, sends the information to the mircrocontroller and communicates itself to the cellphone via bluethooth .

I used MIT APP INVENTOR to design and upload my program specifying what I want , if necessary to an application to the phone where it receives the temperature information .

Perform application design .