r2t2

Dev tools

data transmission tool

SHOW HN2021

r2t2

A tool to communicate data using the PC speaker

github.com

#pc speaker#data over sound#fsk modulation#ggwave

189points
71comments
#245of 2,533 in 2021
Top 10%of 2021 by points

How HN took it

LovedMost comments that take a side are positive

5 positive, 17 neutral or asking, 1 mixed, 1 critical, out of 24 comments about the project. Thread score +0.16.

Idea: 3 for, 0 againstExecution: 2 for, 0 againstPrivacy: 0 for, 1 against

The thread, comment by comment

Each row is a top-level comment and its replies, in HN's order. Select a cell to open that comment on HN.

positive neutral or mixed critical about another commenter or something else the maker

What HN said

What people liked

Objections

  • Speed is slow: 16 bytes in several seconds

    From 2 comments
    • What is the transfer rate?
      cyberge99 on HN
    • You can add a command-line argument to change the Tx protocol between 3 types as explained in the README. Here are the transfer rates for the 3 protocols: - [R2T2] Normal : 16…
      ggerganov on HN

Requests

  • Support for transferring over the regular sound card or microphone

    From 1 comment
    • Well I should say through the sound system (through your laptop's speaker and microphone). I don't think it would work with the old original IBM PC motherboard speaker.
      jhallenworld on HN

Questions

Alternatives named

  • fldigi

    From 1 comment
    • Well you should try "fldigi"- this is a tool with many modulation and demodulation schemes used for amateur radio- they end up going to the transceiver via audio so it works just…
      jhallenworld on HN
  • Quietnet, minimodem, quiet-js

    From 1 comment
    • There was a whole wave of interest in this space in 2014. I believe @kategeek did the first easy-to-use library with Quietnet ;) https://github.com/Katee/quietnet Some other…
      nikisweeting on HN
  • Chirp ultrasonic data

    From 1 comment
    • I remember there being something called Chirp (I think) that had a neat demo where you have two phones download the app, put the phones into aeroplane mode, and then you can…
      tsujp on HN
  • amodem

    From 1 comment

Category, keywords, summaries and labels on this page were made by AI (Thread Reader v2) and not checked by hand. Each point links to the comments it came from.

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