osb.sh

RF, network engineering, Linux & VoIP.

Gabriel Moreno's projects and notes: ham radio and mesh networks, routers and switches, servers, and Asterisk.

See the workOpen the notebook
TermCraft with a lab session tree of routers, switches, a PBX and radio nodes, and several live sessions open side by side.
TermCraft, running the rack →

01 Selected work

Projects

All 6 projects →

N° 01Browser gameLive

MorseMan

A side-scrolling action game that teaches Morse code with the Koch method, then drills you on contest-style pileups.

N° 02Home phone systemLive

The House PBX

My IVR and home phone system. Asterisk 22 in Docker on my Linux server, a voip.ms trunk over TLS, a desk phone, two softphones and a rotary phone, and a menu where pressing 1 gets you the cat.

N° 03Desktop appLive

TermCraft

A free, open-source terminal and session manager for network engineers and anyone who lives on remote machines. SSH, Telnet, serial, TFTP, SFTP, VNC, RDP and Reticulum in one place.

02 Latest entries

The notebook

What I tried, what broke, and what I learned, written at the bench while it was happening.

All entries →

  1. Entry 005MorseMan

    Making a pileup you can actually copy

    The rules the band manager follows so that several stations on screen sound like a real band instead of noise.

  2. Entry 004

    A home for the projects (and the notes)

    Why this site exists and how it works. Projects and notes are plain Markdown files, and apps like MorseMan are hosted right here.

  3. Entry 003MorseMan

    When the test harness is the bug

    Two harness fixes. Hung steps now get force-stopped, and the gap between calls is measured from where the audio really ended.