Stream audio on wireless headset throught BLE?

[feldmarL]

Hey,

A very simple question which may sounds stupid but I can't found a simple yes / no answer to it.

Is it possible, using only a native Arduino Nano 33 BLE, to stream low quality and short audio files on a wireless BLE compatible headset?

Thanks in advance!

[pschatzmann]

I don't know! To my knowledge these headsets use HFP or HSP, but this has nothing to do with BLE!
So the answer would be no: These protocols are part of classical bluetooth which is not supported by the Nano!

[feldmarL]

So is there to your knowledge a Bluetooth speaker (of any kind, really!) that could play an audio file sent from an arduino of this type?

Trying hard to do this for a school project, a POC using any type of speaker would be great!

[pschatzmann]

I would suggest to replace the Arduino Nano 33 BLE with an ESP32. This processor is cheaper and then you could use my A2DP library.

If you need to stick with a RP2040, then I would suggest to find with what mechanism you get a max transmission speed and then build a sender and receiver. E.g. you could try to use Wifi

But in any case, this would not involve any Headsets!

[feldmarL]

To add a little more context:

I'm working on an IoT white cane (for blind users) from which I want to stream audio file through bluetooth. We've been using Arduino Nano 33 BLE so far for all of the other characteristics such as fall detection, geolocation etc.

We chosed this board because we initially thought that BLE was as simple as a technology compatible with classic Bluetooth using less energy. Now facing a wall when trying to do what we want to do.

English is not my main language, I may have used headset wrongly so here is the explanation of what I want:
I meant a wearable bluetooth device used as a speaker such as in my case Beats Studio 3 or any earphone really. Hope this clears the path.

We think we could easily adapt the other functionnality with an other board but we simple now want to make a great, if not the best, decision for the continuation. You've been of precious and fast help, immense thanks for that!

[pschatzmann]

I think you can pretty much forget about audio output using the Arduino Nano 33 BLE...
If I remember right, I never managed to have I2S working and the best I managed was some simulated audio using PWM

[feldmarL]

Great, that's a way to start then.

Is there a board you would recommend for this task? We may also just get rid of it and use another system but we really want to try it out. Lmk!

[pschatzmann]

The best is an ESP32 with my A2DP library.
But be warned, this is one of the more challenging scenarios...

[feldmarL]

Then we'll try it, you may heard from us in a near future.

Thanks again for your time and consideration!

[pschatzmann]

You might also consider this: https://www.hackster.io/news/pi-pico-sdk-1-5-0-release-adds-bluetooth-support-7fe4d09da432

[pschatzmann]

And I found this: https://arduino-pico.readthedocs.io/en/latest/bluetooth.html