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Hobby Public Radio

Your ideas, projects, opinions - podcasted.

New episodes Monday through Friday.


David Whitman

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Host ID: 209

I am a normal person with good taste from Oregon, USA. I like black coffee and FREE Software. I use Linux as my operating system of choice.

episodes: 25

hpr2513 :: Why I choose Aperture first

Released on 2018-03-21 under a CC-BY-SA license.

David Whitman encourages you to choose Aperture as the most important setting in setting up your camera.

Understanding Exposure, 3rd Edition by Bryan Peterson - a good book that is great for learning photography. Duck Duck Go can connect you with a place to buy this book.

David's cache of BAD Photos mostly of Hunt Dogs (some cute girls with dogs too)

Have some fun. Take some photos and do a HPR episode.

hpr2452 :: Hydraulic Heavy Scale Project

Released on 2017-12-26 under a CC-BY-SA license.

Hydraulic Heavy Scale Project

by David Whitman

Why? - to weigh a heavy object yourself

Not very difficult. Can be done in about 1/2 hour by someone who has experience doing this type of stuff. Lots longer for beginners.

Things you will need: A drill motor, The right size bit for a small pilot hole and the right size bit for a fitting to connect the jack cylinder to the pressure gauge, A Thread TAP to make threads to connect the hydraulic 90 degree fitting to the jack, Some pipe dope is not a bad idea, A 90 degree appropriately sized fitting to connect a pressure gauge to the jack, a vise is nice, a wrench to dismantle the jack, A way to accurately measure the cylinder bore (best is a caliper) and some oil to refill the jack.

This link is a youtube to help you visualize the steps.

Hate this episode? No problem. Do a better one

hpr2160 :: An Audio Illustration Tying the Bowline Knot

Released on 2016-11-11 under a CC-BY-SA license.

The following is partial copy from Wikipedia:

"The bowline (/ˈboʊlɪn/ or /ˈboʊlaɪn/)[1] is an ancient and simple knot used to form a fixed loop at the end of a rope. It has the virtues of being both easy to tie and untie; most notably, it is easy to untie after being subjected to a load. The bowline is sometimes referred as King of the knots because of its importance. It is one of the four basic maritime knots (the other three are figure-eight knot, reef knot and clove hitch).

The structure of the bowline is identical to that of the sheet bend, except the bowline forms a loop in one rope and the sheet bend joins two ropes. Along with the sheet bend and the clove hitch, the bowline is often considered one of the most essential knots.[2]

Although generally considered a reliable knot, its main deficiencies are a tendency to work loose when not under load, to slip when pulled sideways[3] and the bight portion of the knot to capsize in certain circumstances.[citation needed] To address these shortcomings, a number of more secure variations of the bowline have been developed for use in safety-critical applications".

hpr2070 :: Adventures with Jonathan Slocum

Released on 2016-07-08 under a CC-BY-SA license.

A 3 layer Birthday Cake

With Frosting

May I suggest that you partake of the layers in this order?

  1. Voyage of the Liberdade by Joshua Slocum
    Find the book at Gutenberg Press
    “Project Gutenberg offers over 50,000 free ebooks: choose among free epub books, free kindle books, download them or read them online.
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    No fee or registration is required, but if you find Project Gutenberg useful, we kindly ask you to donate a small amount so we can buy and digitize more books. Other ways to help include digitizing more books, recording audio books, or reporting errors.
    Over 100,000 free ebooks are available through our Partners, Affiliates and Resources”.

    Find the book in all available forms (HTML, EPub, Text, Kindle) at:
    The text file is here:
    First create an espeak of the text file:
    Voyage of the Liberdade by Joshua Slocum
    To create an espeak run this commmand against the text file:

    espeak -f location_text -w output_file_here(.whatever_extension_you_want)

    Or read the book old school

  2. Sailing Alone Around the World by Joshua Slocum (Audio Book read by Alan Chant)

  3. A YouTube Movie that explains more about Captain Slocum.

The Cremation of Sam McGee Robert W. SERVICE (1874 - 1958) Read by Kristin Hughes

hpr1955 :: Install Open Street Map on a Garmin 60CX

Released on 2016-01-29 under a CC-BY-SA license.
  1. First go to this site:
  2. Then select your map type
  3. Select and download the predefined area or tiles you want. You can download it directly or have the web page build it for you by entering your email address and pushing the button BUILD MY MAP.
    a) If you choose the email option then you get an email that the map is being built and another (later on) that the map is ready.
  4. Unzip the file
  5. Rename the downloaded map to gmapsupp.img
  6. Save your old map (that's on your device) entitled to a different name and then backup
  7. Put the map you unzipped and renamed in its place and make sure it is renamed to 'gmapsupp.img' (omit the single quotes I have used in these show notes)
  8. Use your device and thank OSM

Reasons why I like OSM for use on my Garmin 60CX and Garmin E-trex Vista

OSM maps have more data for my area than the Garmin supplied map World Wide maps are available. See where Peter64, Ken Fallon or even 5150 lives. It's cheaper than buying a commercial map Trails, points and other improvements I put on OSM can be on my map I like the OSM concept and community.

These older GPS's can be purchased for bargain prices. Apparently the suction cup receiver - Garmin Windshield devices can also use OSM maps with other free software.

hpr1953 :: An Interview with David Willson of the Software Freedom School

Released on 2016-01-27 under a CC-BY-SA license.

David Whitman interviews David Willson of Software Freedom School

hpr1808 :: David Whitman reads 'The Shooting of Dan McGrew' written by Robert W Service

Released on 2015-07-08 under a CC-BY-SA license.

from The Project Gutenberg EBook of Songs of a Sourdough, by Robert Service

This eBook is for the use of anyone anywhere at no cost and with almost no restrictions whatsoever. You may copy it, give it away or re-use it under the terms of the Project Gutenberg License included with this eBook or online at

The orginal work published 1907. Copyright expired in U.S. See the Project Gutenberg website for their copyright notices

Bibliographic Record
Author Service, Robert W. (Robert William), 1874-1958
Title Songs of a Sourdough
Language English
LoC Class PR: Language and Literatures: English literature
Subject Yukon River Valley (Yukon and Alaska) -- Poetry
Category Text
EBook-No. 25546
Release Date May 20, 2008
Copyright Status Public domain in the USA.
Downloads 55 downloads in the last 30 days.
Price $0.00

Title: The Spell of the Yukon

Author: Robert Service

Posting Date: July 11, 2008 EBook
Release Date: January, 1995

Interesting Info at

hpr1802 :: An Interview with Emily Hampton a LinuxFest Northwest Volunteer

Released on 2015-06-30 under a CC-BY-SA license.

Emily Hampton

hpr1797 :: An Interview with Aaron Wolf of the Snowdrift Co-op Project

Released on 2015-06-23 under a CC-BY-SA license.

An Interview with Aaron Wolf of the Snowdrift Co-op project by David Whitman during LinuxFest Northwest 2015

Aaron Wolf

Snowdrift: About: We're building a sustainable funding platform for freely-licensed works. Our innovative matching pledge creates a network effect where we all work together to support these public goods.


Our matching patronage system allows everyone to support FLO projects with minimal risk and maximum impact.

Unlike the one-to-one matching used in traditional fundraising, we use a many-to-many matching pledge that creates a network effect (like the internet itself) so that we all reinforce one another. Unlike one-time fundraising campaigns that help projects get started, pays out monthly to provide sustainability for ongoing work.

Before the times of modern market capitalism, creative workers were supported by wealthy patrons. With, the global community becomes the patron. Instead of businesses deciding the options that we then merely choose from as consumers, we will support and actively work with projects that best serve the interests of the public.

Snowdrift wiki:

IRC at: at #snowdrift

hpr1792 :: An Interview with Andrea Frost

Released on 2015-06-16 under a CC-BY-SA license.

I interview Andrea Frost at LinuxFest Northwest.

Andrea Frost

Andrea Frost holds a B.A. in German language and a concentration in mathematics from Western Washington University. A passionate advocate of youth and education, Frost has a wide spectrum of volunteer experience with youth organizations.

She is currently an office assistant for Kids Council Northwest and finishing a post-graduate degree in computer science from Western. Western Washington University Association for Women in Computing

hpr1773 :: LFNW 2015 interview with Deb Nicholson

Released on 2015-05-20 under a CC-BY-SA license.

Deb Nicholson:
has been a free speech advocate, economic justice organizer and civil liberties defender. After working in Massachusetts politics for fifteen years, she then became involved in the free software movement at the Free Software Foundation.

Defensive Publications info:

Seattle GNU/Linux Conference IRC on Freenode in #seagl. Were very excited to be returning to Seattle Central College for SeaGL on Friday October 23rd and Saturday October 24th, 2015. SeaGL is a grassroots technical conference dedicated to spreading awareness and knowledge about the GNU/Linux community and free/libre/open-source software/hardware. Cost of attendance is free. Attendee Registration will not require the use of non-free software. You may attend SeaGL without identifying yourself, and you are encouraged to do so to protect your privacy.

hpr1767 :: An interview with Ed Cable of the Mifos Initiative

Released on 2015-05-12 under a CC-BY-SA license.

David Whitman interviews Ed Cable of the MIFOS Initiative

From their website: Mifos X is an extended platform for delivering the complete range of financial services needed for an effective financial inclusion solution.

As the industrys only open platform for financial inclusion, we provide affordable, adaptable and accessible solutions for any segment of the market, new and small financial institutions can easily start with our community app in a hosted environment, medium and large institutions that are evolving into full-service providers of financial inclusion can use our global network of IT partners to configure a Mifos X solution, and innovators can build and scale entirely new solutions on our API-driven platform.

hpr1729 :: Shield's Up - Wood Stove Heat Shield Project

Released on 2015-03-19 under a CC-BY-SA license.

The Problem: Wood stoves get really hot
The solution: metal heat shield and airspace
I describe how I used common materials and self designed a wood stove heat Shield.
Hopefully there are pictures attached to this episode show notes so you can see just how well I described my project

hpr1547 :: My Linux Experience Birthday Special

Released on 2014-07-08 under a CC-BY-SA license.
The cake is not a lie, I tell how I got into Linux and what my favorite Birthday Cake is.

hpr1474 :: A behind the Curtain Look at OsmAnd (OSM Automated Navigation Directions) with Pokey and David

Released on 2014-03-27 under a CC-BY-SA license.

Thanks to Pokey for being the expert in this oggcast. Note: The song 'Do The Hokey Pokey is copyrighted'


OsmAnd (OSM Automated Navigation Directions) is a map and navigation application with access to the free, worldwide, and high-quality OpenStreetMap (OSM) data. All map data can be stored on your device's memory card for offline use. Via your device's GPS, OsmAnd offers routing, with optical and voice guidance, for car, bike, and pedestrian. All the main functionalities work both online and offline (no internet needed). Some of the main features:


  • Works online (fast) or offline (no roaming charges when you are abroad)
  • Turn-by-turn voice guidance (recorded and synthesized voices)
  • Optional lane guidance, street name display, and estimated time of arrival
  • Supports intermediate points on your itinerary
  • Automatic re-routing whenever you deviate from the route
  • Search for places by address, by type (e.g.: restaurant, hotel, gas station, museum), or by geographical coordinates

Map Viewing

  • Display your position and orientation on the map
  • Optionally align the map according to compass or your direction of motion
  • Save your most important places as Favorites
  • Display POIs (point of interests) around you
  • Can display specialized online tile maps
  • Can display satellite view (from Bing)
  • Can display different overlays like touring/navigation GPX tracks and additional maps with customizable transparency
  • Optionally display place names in English, local, or phonetic spelling

Use OpenStreetMap and Wikipedia Data

  • High quality information from the best collaborative projects of the world
  • Global maps from OpenStreetMap, available per country or region
  • Wikipedia POIs, great for sightseeing (not available in free version)
  • Unlimited free download, directly from the app (download limit 16 map files in free version)
  • Always up-to-date maps (updated at least once a month)
  • Compact offline vector maps
  • Select between complete map data and just road network (Example: All of Japan is 700 MB, or 200 MB for the road network only)
  • Also supports online or cached tile maps

Safety Features

  • Optional automated day/night view switching
  • Optional speed limit display, with reminder if you exceed it
  • Optional speed-dependent map zooming
  • Share your location so that your friends can find you

Bicycle and Pedestrian Features

  • The maps include foot, hiking, and bike paths, great for outdoor activities
  • Special routing and display modes for bike and pedestrian
  • Optional public transport stops (bus, tram, train) including line names
  • Optional trip recording to local GPX file or online service
  • Optional speed and altitude display
  • Display of contour lines and hill-shading (via additional plugin)

Directly Contribute to OpenStreetMap

  • Report map bugs
  • Upload GPX tracks to OSM directly from the app
  • Add POIs and directly upload them to OSM (or later if offline)
  • Optional trip recording also in background mode (while device is in sleep mode)

OsmAnd is open source and actively being developed. Everyone can contribute to the application by reporting bugs, improving translations, or coding new features. The project is in a lively state of continuous improvement by all these forms of developer and user interaction. The project progress also relies on financial contributions to fund the development, coding, and testing of new functionalities. By buying OsmAnd+ you help the application to be even more awesome! It is also possible to fund specific new features, or to make a general donation on

OsmAnd (OSM Automated Navigation Directions)


hpr1426 :: A Visit to Reglue

Released on 2014-01-20 under a CC-BY-SA license.

Recycled Electronics and Gnu/Linux Used for Education. Reglue, in a nutshell, gives free Linux computers to under privileged children and their families. From their website:

According to our estimates and those of the Austin Independent School District, there are over 5000 Austin students who cannot afford a computer or Internet access. Reglue wants to reduce that number by as much as we can. Since 2005 we have provided 1102 disadvantaged Austin-area kids and their families a computer. These kids cannot grow and compete with their peers unless they have a computer and Reglue focuses on giving these kids the tools they need.

To find out more about Ken Starks - Find him on Google+

Ken's Blog

hpr1268 :: What's in my bag

Released on 2013-06-12 under a CC-BY-SA license.

A short episode by me: "David Whitman" about things I carry in my backpack which is my go to work bag. Normally there would be food in there but it is Sunday morning and thankfully I have left no food in the bag. Food ideally goes to work and is consumed but there have been those times.........the forgotten orange etc.

hpr1246 :: David Whitman On Location at LinuxFest Northwest

Released on 2013-05-13 under a CC-BY-SA license.

LFNW Garage Sale Booth - old computer stuff sold to support the fest

Bill Wright at the LFNW World Famous Raffle

EFF / TOR Table -

DW does a cheesy Lightning Talk about HPR.

Martin Obando


Larry the Crunchbang guy

OrangeFS Amy Cannon Nathan James

Linux Automation - Beer!

Fedora Project

iSEC Partners




Free Software Foundation

Linux Professional Institute

GSLUG Ubuntu Washington KDE

hpr1214 :: LinuxFest Northwest is April 27, 28,2013

Released on 2013-03-28 under a CC-BY-SA license.

LinuxFest Northwest is April 27, 28, 2013 - an Interview with Jakob Perry

Series/Tags: Show notes, Jakob Perry, LinuxFest Northwest, beer, Linux, Bellingham, Bellingham Technical College, Bellingham Linux Users Group

An interview with Jakob Perry by David Whitman

LinuxFest Nothwest is to be held April 27, 28, 2013

Website is

Plan to attend if you can.

LinuxFest Northwest is an annual event produced by the Bellingham Linux Users Group, and volunteers from other northwest U.S. open source users groups. It is held on the campus of Bellingham Technical College (directions at the BTC website under ABOUT BTC). The Fest features Linux and open source experts and aficionados sharing their experience and enthusiasm with a wide variety of free and open source technologies.

This generally means that there will be a lot of smart people who come with something to share and a desire to learn. This is a low cost/high value event that's held on a weekend, so there are also folks who don't usually go to commercial conferences. All in all, it's a lot of fun with fresh faces on eager people.

hpr0988 :: LFNW: Dawn McKenna of McKenna Interpreting Services

Released on 2012-05-15 under a CC-BY-SA license.

Linux Fest North West Week Special

All week we are airing the interviews that were recorded at the Linux Fest Northwest took place on April 28 and 29, 2012

Dawn McKenna of McKenna Interpreting Services

Dawn McKenna of McKenna Interpreting Services organized a group of volunteer sign language interpreters for the Linux Fest.
If you want to get more information about how to organize sign language interpretation at your event contact Dawn at
Dawn had a very cool computer mouse with a spider trapped inside.
The HPR table was next to this group and these folks were really fun to be around. Lots of energy and you could tell they were really into their craft.
Thanks to all the volunteer sign language interpreters! YOU ROCK!

hpr0987 :: LFNW: Larry Cafiero - the Crunchbang guy

Released on 2012-05-15 under a CC-BY-SA license.

Linux Fest North West Week Special

All week we are airing the interviews that were recorded at the Linux Fest Northwest took place on April 28 and 29, 2012

Larry Cafiero - the Crunchbang guy

Larry the CrunchBang Guy is Larry Cafiero, 54, who runs Redwood Digital Research in Felton, California, which provides Free/Open Source Software solutions for the small business/home office environment. He has been an advocate for Free/Open Source Software (FOSS) since the fall of 2006. Toward the end of 2006, he had an epiphany or satori regarding the social, philosophical, political and economic benefits of using FOSS on his favored hardware, which at the time consisted of the Mac PowerPC platform (although he has warmed up to Intel machines as of late). He organized a project to promote GNU/Linux which turned out to be the Lindependence events in Felton, California, in 2008. Larry’s brush with fleeting fame came in 2006 as the Green Party’s candidate for Insurance Commissioner in California (270,218 votes, 3.2 percent). He has been using CrunchBang on a regular basis since July 2011.

See Larry's video of his LFNW Presentation at:

hpr0986 :: LFNW: Interview with Scott Newlon of MintCast

Released on 2012-05-13 under a CC-BY-SA license.

Linux Fest North West Week Special

All week we are airing the interviews that were recorded at the Linux Fest Northwest took place on April 28 and 29, 2012


mintCast is "a podcast by the Linux Mint community for all users of Linux." Keep up to date on the latest happenings in the Mint community along with reviews and tutorials on how to get the most out of your Linux system.

I interviewed Scott on April 29, 2012 at a picnic table outdoors.

hpr0985 :: LFNW: A Short Talk with Thomas Stover

Released on 2012-05-10 under a CC-BY-SA license.

Linux Fest North West Week Special

All week we are airing the interviews that were recorded at the Linux Fest Northwest took place on April 28 and 29, 2012

Thomas Stover presented: User Space C Development Contact Thomas at:

A special Thank You to Thomas for the interview.

hpr0958 :: KDE Gathering - Plasma Active - THE Tablet

Released on 2012-04-03 under a CC-BY-SA license.

KDE will get hosting a regional meeting of KDE for the Northwestern United States April 28 and 29, 2012 at LinuxFest Northwest

Akademy 2012
30th June - 6th July 2012, Tallinn, Estonia

KDE is 15 years old.
Kool Desktop Environment

KDE desktop is called the Plasma Workspace
Plasma Workspaces is the umbrella term for all graphical environments provided by KDE. (from Wikipedia)


Krita - Painting and Image Editing

This OS is open unlike other tablet operating systems. Vivaldi Tablet

Anyone can attend this KDE gathering which is co-located with LinuxFest Northwest Plasma Active is not locked down and has office applications

Word Processor, spreadsheet presentation software, drawing optimized for touch

Calendaring, PIM aspect to KDE has been refocused to touch and is avaiable right now

Some KDE programs are still being optimized for the touch environment

Qt-questions about its openness has been resolved

Might be some Raspberry Pi's at the gathering and they will be raffled after the KDE coders get done with them at the LinuxFest Northwest world famous raffle.

You can make your own tablet and use the OS for your project.

OS uses Qt and C++

QT Quick

A continuation of Megoo - Mer

Can be used on some smart phones

Check out KDE and Plasma Active

These notes based on the interview by David Whitman with Carl Symons and John Blanford for Hacker Public Radio.

hpr0946 :: HPR Interview David Whitman with Carl Symons and John Blanford

Released on 2012-03-19 under a CC-BY-SA license.
HPR Interview David Whitman with Carl Symons and John Blanford
LinuxFest Northwest 2012
Bellingham, Washington 98225 USA
April 28th & 29th, 2012
Admission Free
or support the fest as an Individual Supporter -
60 USD
A’salt’ing Your Computers *
Accessibility: It’s about you!-(Beginner)
Alan Turing: The First 100 years, by author George Dyson
Alpha Geek
Amazon and the Future of the Open Cloud
An Intro to CrunchBang
Ask Your Users: Redesigning the Western website for Drupal with user feedback (Beginner)
Automate Your Infrastructure With Chef
Automated License Plate Recognition use by law enforcement
BAIRS (Bellingham Artificial Intelligence & Robotics Society) (Beginner)
Blender: a 3D introduction
Border Crossings
Bring Intelligence Back to Your Scheduled Tasks
BSD Virtualization
Building my first module with Drupal!
Building RPMs for enterprise deployments
Crash Course in Open Source Cloud Computing
Creative camera control under GNU/Linux.
Creating Solutions with CentOS Studio
Custom Live Linux
Customizing Linux for the Classroom
Deploying an IaaS cloud with CloudStack
DIY Man in the Middle for Security and Privacy
Embedded Hardware Development In Linux
Enterprise Systems Management with Spacewalk
Fedena: Open Source School management system
Git Deep: A deep dive into Git
File Security: Lock Down Your Data
Free (as in speech) brewing (as in beer)
FreeNAS: Open Souce Storage Solution
Game Den
Get Cloudy!
Getting started with Ubuntu
Gnome 3 on it's own merit.
Help us get open source used in local schools
High Availability Clustering with Linux
Introduction to Drupal
Introduction to Joomla!
Introduction to the i3 Window Manager
jQuery Tips and Tricks
Jump Start with Symfony2
kismet BOF
Lean startup overview/The Idea Lab
Lean startup/Agile development
Linux SSTP Server - VPN For Windows Clients
Linux Alternative Rescue Disk
Linux Groups 2.1: Noob Morning in America
Linux Logical Volume Manager Advanced Topics
Linux Made Easy
Linux Performance Analysis
Linux Permissions
Linux SSTP Server - VPN For Windows Clients
Logical Volume Management: Maximize your Hard Disk Space
Meet Fedora: The Not-So-Miraculous story of a successful community, and where the Fedora Project is today.
Messaging for Free Software Groups and Projects
Microcomputer Firmware Development using Linux
Minimizing IT Infrastructure Costs in a Stressed Economy
Monitoring What Matters
Multitouch linux- Utouch and Ginn
MySQL Overview
MySQL Security Beyond The Obvious
Open Source On The Farm
Open Source Software and the Healthcare Data Revolution
openSUSE--It's not just a distro!
ownCloud - Your Cloud, Your Data, Your Way!
Panel Forum with ACLU and EFF
Penetration Testing at the Speed of Metasploit
Perl Regular Expressions
PHP Multitasking without forking
Polyglot Paas Without Vender Lock-In
Powerful Team Collaboration with Trac
Prerequisites for success in the cloud
Programming Location Based Services applications w/Qt
Repairing a Hacked Drupal Website
Revvy - Are your programs out of date?
rshall: A Tool for Managing Hosts in Parallel
Security Enhanced Linux for Mere Mortals
Scalable HTML5 Video Player - Development, Extensibility and Targeting Multiple Platforms
Security Worst Practices
Software Patents: What You Can Do
Supporting Classrooms - 101
Teaching Linux and Linux System Administration as Distance Education Classes
The future of web's video – Open, Streamlined, Exciting
The LFNW World Famous Raffle
The MySQL Diaspora in 2012
The new MySQL eco-system
The MySQL Ecosystem Meets the Cloud
Traffic Redirection With Apache
The Pop Culture Guide To Open Source
User Space C Development
Using BackTrack 5 for fun and profit.
Using the Red Hat Storage Software Appliance (Gluster)
Utilizing Travis CI
We are Legion: Decentralizing the Web
What Makes Android Tick
What's new in MariaDB 5.5 and what's coming in MariaDB 5.6
Why Linux Does Not Suck (Not Even A Little)
Why Linux Sucks (As Usual)
Wireshark as used by a non-guru
XenClient: Client-side virtualization, and how to take Virtual Desktop Infrastructure (VDI) offline
Friday night- Tech Night Gathering
Meet and Greet, Job Fair, meet and socialize with other Linux Geeks/ Users

Saturday after-Fest party
Appetizers, drinks, dessert, celebration, fun, games and conversation for LFNW attendees at the SPARK Museum of Electrical Invention (formerly the American Museum of Radio and Electricity) (1312 Bay Street). 6:00 - 11:00 p.m.

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