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 ?

  • buy a bluetooth button like this amazon.com/iBOLT-Bluetooth-distance-Customize-commands/dp/…
    – Juraj
    Commented Nov 27, 2018 at 20:53
  • "access features of compatible apps" seems suspicious, also I can´t find anywhere if it can be used on custom Apps.
    – Grefu
    Commented Nov 27, 2018 at 21:26
  • it is unclear why the Bluno Beetle is unsuitable for your project .... please post the code that you tried .......... the Bluno Beetle is an arduino with a bluetooth module and you are asking about replacing it with another arduino and another bluetooth module
    – jsotola
    Commented Nov 27, 2018 at 21:37
  • I connected a button to the Bluno Beetle and I want the Android App to know when the button is pushed and when is not. I can´t change the characteristic the Bluno Beetle exposes on the Bluetooth Service from the code, so I cannot send the button status to the Android App.
    – Grefu
    Commented Nov 27, 2018 at 21:59
  • have you seen this page? ... dfrobot.com/blog-283.html
    – jsotola
    Commented Nov 27, 2018 at 23:45

1 Answer 1


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.

  • but that is exactly what Bluno Beetle is. a 328p plus CC2540
    – Juraj
    Commented Nov 30, 2018 at 8:17
  • Why he asked then what he should buy
    – Pararera
    Commented Nov 30, 2018 at 13:09
  • because he doesn't understand how it works
    – Juraj
    Commented Nov 30, 2018 at 13:20
  • Hi Juraj, If you understand how it works, could you explain to me how can I get the status of a button connected to the bluno to an android app connected to the bluno by Bluetooth ?
    – Grefu
    Commented Nov 30, 2018 at 23:52
  • @Grefu, you must use @ to get a user notified. the manufacturer has examples. jsotola posted a link in comments to the question
    – Juraj
    Commented Dec 4, 2018 at 14:30

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