Connect a button to bluetooth board and comunicate with Android I want to create a small device, just a button that sends its status to an Android application through Bluetooth.

I bought a Bluno Beetle, but the information it exposes to Bluetooth cannot be modified from Arduino code, so I have no way to send the button status to the Android App, rookie mistake I guess.

Could you please tell me which model of arduino+bluetooth should I purchase to do this ?
For your project you can buy cheap Arduino Nano, or even Mini(programmer needed). For BT module buy HM10. It's cheap and it supports Bluetooth Low Energy.