Owen T. Heisler

Technical Writer and Consultant

Site Map

All pages on this site, aside from the Home page:

• Archive: A collection of old content

  • CSV to Navit Converter: Converting a CSV file with coordinates to a bookmark.txt file for use with Navit

  • Debian Home Server & Router: Setting up a combination home server and network router using Debian GNU/Linux Squeeze

  • Filesystem Bookmarks: Storing browser bookmarks in the normal GNU/Linux /home/user filesystem hierarchy

  • Nokia N810 chroot: Setting up a Debian GNU/Linux chroot on a Nokia N810 Internet Tablet

  • Nokia N810 Kernel: How to recompile the Nokia N810 Linux kernel in order to add or remove kernel features

  • Nokia N900 Kernel: How to use the N900 “Power Kernel” for additional features without breaking camera functionality

  • vCard Separator: A Python script for separating a multiple-vCard file into multiple individual vCard files

  • vCard to GeoCSV Converter: A script for extracting vCard GEO field coordinates and saving them to a CSV file

  • vCard to Twinkle Converter: A script that extracts telephone numbers from vCard TEL fields and creates an address book file for the Twinkle VoIP phone

• Code: A listing of software projects I maintain or contribute to

  • addrcollector: A Python application for automatically collecting email addresses from email messages

  • asciidoctor-multipage: An Asciidoctor extension that writes output to multipage HTML

  • todo.txt-cli dorecur: A todo.txt-cli add-on for handling recurring tasks

• Contact: Send a message

• Meta: Policies and other pages related to this site

  • Credits: Software used to build and maintain this site

  • Privacy Policy: How your information is (or is not) used on this site

  • Security Policy: The security disclosure policy for this site

  • Terms of Use: Legal terms governing the use of this site

• Portfolio: Some examples of my work

  • addbooktool: A syntax specification and application for validating and exporting contact information stored in a proprietary database

• Services: Information about the services I provide

• Site Map: A listing of all pages on this site

• Support Me: How you can support me

• Topics: Detailed articles about various topics

  • Guix Custom One-Shot Services: Guix definitions demonstrating a few custom one-shot Guix services

  • Imposition: Using PDF tools on Debian GNU/Linux to create booklets

  • LineageOS for MicroG on the Pixel 3a: Installing and using LineageOS for microG system on the Google Pixel 3a phone

  • Mini Split Thermostat: Fixing a broken mini split heat pump with a custom thermostat

  • Speech Reinforcement: Detailed information about using sound systems for speech reinforcement

    • Assistive Listening: Providing audio for people with hearing loss or in other rooms outside of the normal listening area

    • Design 1: An old sound system design for speech reinforcement in large rooms

    • Design 2: A simple sound system and accessories that can be used for speech reinforcement with a small audience

    • Design 3: A highly flexible, automated sound system for speech reinforcement with large groups

      • Building Guide: Detailed information about building the system

      • User Guide: Instructions for setting up and using the system

    • General Notes: External links and related notes

    • Hearing: Understanding hearing, hearing loss, and comprehension as relates to audio

    • Human Speaker: Tips for speakers and details about human speech frequencies

    • Microphones: Selecting and using microphones and related equipment

    • Mixing and Processing: Theory and specific hardware related to the mixing part of the signal path

    • Power: Using uninterruptible power supplies (UPSes) for reliable power

    • Room Speakers: Selecting, installing, and powering speakers

    • Signal Path: The path the audio takes and why it is important

    • Storage: Choosing racks and other hardware for storing and transporting audio equipment

    • Taking Measurements: Using software and equipment to get objective details about what is happening with an audio signal

    • Telephone Output: Sharing audio over the telephone

    • The Room: How the room affects audio and how to reduce loss of quality

    • Wiring and Cables: Signal levels, attenutators, cable types, distances, and gauges

  • StarDict Dictionaries: Using StarDict on Linux for fast, offline dictionary and encyclopedia access

  • Sword Module Generator: A script for converting a dictionary or commentary file in IMP format to a Sword module

  • Ubiquiti Bullet M2HP XW: Installing OpenWrt on a Bullet M2HP router