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Bitchat – A decentralized messaging app that works over Bluetooth mesh networks

(github.com)
778 points ananddtyagi | 2 comments | 07 Jul 25 00:05 UTC | HN request time: 0.437s | source
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sardine5 ◴[07 Jul 25 03:22 UTC] No.44486454[source]▶
A bit different, as it's mainly for voice - but I made an app 'Murmur : Bluetooth Group Calls' - that lets you hold group voice calls and message via a mesh of Bluetooth LE connections. It's available on Android and iOS. https://apps.apple.com/gb/app/murmur-bluetooth-group-calls/i...

Doesn't really get any downloads, so not sure there's much demand for this - but I use it with some shokz bone conducting headphones for talking to my wife when we're cycling (also for wrangling our two small girls)

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roshin ◴[07 Jul 25 04:37 UTC] No.44486801[source]▶
Cool technology, but what is the usecase? I can imagine traveling abroad without a sim and using it as described. But is it any better than using the cellular network (when you have access to it)?
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nullify88 ◴[07 Jul 25 06:40 UTC] No.44487367[source]▶
I commonly Signal call my partner when we are at opposite ends of the house. I can see something like this being useful to prevent using some remote Internet server to facilitate a very local call.

I wonder if there's a home lab / self hosted solution for this.

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1. subscribed ◴[07 Jul 25 08:00 UTC] No.44487800[source]▶
Bluetooth to reach and reliably hold a high throughout connection to the device across the house?

I don't think so.

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2. sardine5 ◴[07 Jul 25 09:38 UTC] No.44488442[source]▶
You can do a surprising amount with a low throughput connection though. I've been playing with Google's Lyra V2 codec - it chews up a fair bit of CPU, but 3.2kbps over a CodedPhy link sounds fine.