I'm doing a Lego EV3 robot for a project. It needs to play sounds (like a soundboard app on a phone, but triggered remotely). Sadly, the speaker on the EV3 brick is too quiet for this. I got the idea to use my old phone connected to a Bluetooth speaker. Sadly, I can't find any apps that already do this and I have no programming experience. Is there another way to remotely trigger playback of a sound file stored on the phone? I'm okay with rooting the phone.

EDIT: I guess I didn't make that clear enough... I want to hold my phone in my hand and with that phone I want to make my other phone play short MP3 files. Without any wired connection. God dammit is English hard...

  • When you say triggered remotely, what do you mean? Triggered by a time, location, text message, or what?
    – aBochur
    Feb 28 '18 at 2:13
  • From an another device, text message would be fine (edited that into the post)
    – rete290
    Feb 28 '18 at 8:43

Have you tried airdroid https://www.airdroid.com/ it's very easy to use!

Or you can try somthing like https://www.logmein.com/ it's a cloud-based remote connectivity service a bit more complicated to setup

I hope my answer was helpful


You can install TeamViewer Host on your remote phone and TeamViewer on your regular phone. Setup is straightforward.

I use this for a similar purpose. I have a cheap Chinese surveillance cam which sends me an alert to my phone when an intrusion is detecgted. I want to play a loud sound when an intruder is detected, but unfortunately the camera built-in speaker power is too low. I had the idea of connecting an old phone to a set of speakers, then remotely control it to open the audio player and play a sound. I can easily accomplish this "manually" with this setup while I try to figure out how to accomplish this in a more automated way.

But considering this question is from 2018 I bet you've already found a solution that works for you ;)

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