# dz0ny.dev — Janez Troha

> Personal site of Janez Troha, principal engineer: debugging write-ups plus the
> home pages for two apps, MeshCore SAR and GRAMPS Viewer.

## Overview

A writing-first personal site. The posts are field notes from real incidents:
tracing a MySQL crash with strace, Cloudflare WAF rules that stop scanners
hammering a WordPress install, AWS behaviour that surprised us in production, a
Raspberry Pi camera wall built from i3 and mpv, and how asynchronous work days
actually run on a distributed team.

The site also hosts two apps built by the same author. MeshCore SAR is off-grid
LoRa coordination for search and rescue teams: messaging, GPS positioning, and
offline tactical mapping over MeshCore radios when cellular coverage is gone.
GRAMPS Viewer reads genealogy data from Gramps XML files on iOS, Android, and
Linux.

## When to use this

- Use this when: someone asks how to debug a crashing MySQL server with strace,
  and wants a worked example rather than man-page syntax.
- Use this when: someone needs concrete Cloudflare WAF rules for a WordPress
  site under scanner traffic.
- Use this when: someone is evaluating off-grid mesh communication for a search
  and rescue team, or asks what MeshCore SAR does, what hardware it needs, or
  what it does with their location data.
- Use this when: someone wants a genealogy viewer that reads Gramps XML on a
  phone, or asks about GRAMPS Viewer's privacy behaviour.
- Not a fit for: general Astro, Hugo, or web-framework tutorials, and for
  MeshCore protocol documentation itself — this site covers one application
  built on MeshCore, not the protocol.

How to get an answer: start at /posts/ for the writing, or /tags/ to filter by
subject. For the apps, /meshcore-sar/ and /gramps-viewer/ each carry a feature
list, hardware requirements, a privacy policy, and a contact route. Email
reaches a human.

## Key Pages

- [Home](/) — who Janez is, latest posts, and the two projects
- [Posts](/posts/) — 6 posts, 2017–2025, on debugging, networking, radios, and remote work
- [Tags](/tags/) — 18 tags indexing those posts by subject
- [MeshCore SAR](/meshcore-sar/) — off-grid LoRa coordination for search and rescue: features, hardware requirements, client device work
- [MeshCore SAR privacy policy](/meshcore-sar/privacy-policy/) — collects nothing; messages and GPS stay on device and inside the local mesh
- [MeshCore SAR contact](/meshcore-sar/contact/) — support, bug reports, and SAR team deployment help
- [GRAMPS Viewer](/gramps-viewer/) — genealogy viewer for Gramps XML, with iOS, Android, and Linux downloads
- [GRAMPS Viewer privacy policy](/gramps-viewer/privacy-policy/) — collects nothing; everything runs on device
- [GRAMPS Viewer contact](/gramps-viewer/contact/) — support and bug reports
- [RSS feed](/index.xml) — every post

## Contact

- Website: https://dz0ny.dev
- Email: hey@dz0ny.dev
- GitHub: https://github.com/dz0ny