Can Anvil connect to external Bluetooth?, can we stream audio and create live feedback with Anvil

Anvil Q&A
1

I am glad there is a system like AnvilšŸ˜, which is life saving for a person like me. a Python beginner.

I want to build a Web app in Anvil,

a Mindfulness Bio-feedback dashboard.

I have some Technical Queries can you please help me here.

  1. I want to link the proposed Anvil webapp with a Bluetooth wearable device through Web, I am aware of Javascript API to connect, is there any better way to do it through Python?

  2. I want to create live Audio feedback from the data recived from Bluetooth device,

How can i create a live Audio feedback in Anvil and play it on the Web?

  1. Can i Stream Audio in the Anvil?, Can different users upload the audio and can it be streamed.

I have already explored tutorials and did the Talkpython Anvil course as well.

Very new to coding hence many questions, thanks in advance for the help.

2

Anything that happens client-side in Anvil is happening through Javascript. Anvil just does a good job of hiding that from you and allowing you to write Python.

For anything that Anvil doesnā€™t support in Python (like connecting to a Bluetooth device), you have to use the Javascript bridge. How easy or hard that is depends entirely on the Javascript library youā€™re trying to use.

Hereā€™s a post showing one particular integration: Embedded interactive visualisations in Anvil using e.g. Vega Lite? - #2

And here are the docs on using Javascript from your Python code: Anvil Docs | Using JavaScript

One of the really cool things about the Anvil/Javascript bridge is that you can pass Python functions as Javascript callbacks, so you can work with many Javascript libraries entirely from inside form code.

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3

Thanks for your help,
Do you have any suggestion on streaming audio through Anvil?
Thanks in advance.

4

Start by looking through the forum for posts on similar topics. Capturing audio, playing audio, storing audio, etc are all topics that show up pretty regularly. Hereā€™s one thread about playing audio: Simple Audio Player - #5 by robert

Then create a small proof of concept, and if it doesnā€™t work, let us know whatā€™s happening and someone will probably be able to help you fix it.

Focus on one technical issue at a time, too, rather than trying to write your entire app all at once.

Edit: Hereā€™s the Anvil docs section on integrating third-party Javascript libraries: Anvil Docs | JavaScript

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