IP over LoRa at 868 MHz (EU) using tncattach

by almeyras 3 years ago

macOS ◆ xterm-256color ◆ bash 882 views

This tutorial will:

Create a LoRa interface in each node using tncattach
Establish a PPP link with tncattach
Ping throug LoRa link
iperf3 throughput test
SSH test through link
MOSH test through link

The hardware used is 2x Waveshare LoRa HAT for Raspberry Pi (EBYTE E22 driving a Semtech SX1262) along with 2x Raspberry Pi Zero.

E22: 115200 baud, 8N1, 62.5 kbps, 240 bytes, LBT disabled. For easy config, use USB TTL cable with M1=1, M0=0 and the EBYTE RF Setting app.
tncattach: MTU is 236 bytes (240 - 4 bytes for PPP overhead)

SPECIAL THANKS to Mark Qvist for creating “tncattach”

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You can download this recording in asciicast v2 format, as a .cast file.

Download

Replay in terminal

You can replay the downloaded recording in your terminal using the asciinema play command:

asciinema play 350743.cast

If you don't have asciinema CLI installed then see installation instructions.

Use with stand-alone player on your website

Download asciinema player from the releases page (you only need .js and .css file), then use it like this:

<!DOCTYPE html>
<html>
<head>
  <link rel="stylesheet" type="text/css" href="asciinema-player.css" />
</head>
<body>
  <div id="player"></div>
  <script src="asciinema-player.min.js"></script>
  <script>
    AsciinemaPlayer.create(
      '/assets/350743.cast',
      document.getElementById('player'),
      { cols: 142, rows: 42 }
    );
  </script>
</body>
</html>

See asciinema player quick-start guide for full usage instructions.

While this site doesn't provide GIF conversion at the moment, you can still do it yourself with the help of asciinema GIF generator utility - agg.

Once you have it installed, generate a GIF with the following command:

agg https://asciinema.org/a/350743 demo.gif

Or, if you already downloaded the recording file:

agg demo.cast demo.gif

Check agg --help for all available options. You can change font family and size, select color theme, adjust speed and more.

See agg manual for full usage instructions.