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Hobby Public Radio

Your ideas, projects, opinions - podcasted.

New episodes Monday through Friday.

Welcome to HPR the Community Podcast Network

We started producing shows as Today with a Techie on 2005-09-19, 15 years, 2 months, 20 days ago. Our shows are produced by listeners like you and can be on any topic that "are of interest to hobbyists". If you listen to HPR then please consider contributing one show a year. If you record your show now it could be released in 32 days.

Meet the team

Please help out tagging older shows !

The Ninth Annual New Years Eve Show

It’s that time of year again. Time for the 24 hr (26 hr) New Years Eve Show.

For those who don’t know, on New Years Eve 2020-12-31 10:00 UTC (5:00 AM EST), we will have a recording going on the HPR Mumble server for anyone to come on and say “Happy New Years” and talk about whatever they want.

We will leave the recording going until at least 2021-01-01 12:00 UTC (7:00 AM EST) and then until the conversation stops.

Spread the Word

If you are a podcaster please spread the word by including hpr-nye-promo.ogg or hpr-nye-promo.mp3 in your show !

Latest Shows

hpr3220 :: PixelFed

A look at a federated alternative to Instagram.

Hosted by Ahuka on 2020-12-04 is flagged as Clean and released under a CC-BY-SA license.
Tags: social media, alternative, Fediverse, ActivityPub, PixelFed, photo sharing.
Listen in ogg, spx, or mp3 format. Series: Social Media | Comments (0)

Maybe you want to share some photos with your family and friends. You could use Instagram, but that is part of the Surveillance Capitalist media environment. Fortunately, there is a privacy-respecting federated alternative called PixelFed. This episode is an introduction to that platform.

hpr3219 :: Linux Inlaws S01E18: Voice Recognition and Text to Speech

How to place fake prank calls into podcasts and what does TTS have to do with this

Hosted by monochromec on 2020-12-03 is flagged as Explicit and released under a CC-BY-SA license.
Tags: voice recognition, text to speech, wavenet, tacotron 2, DeepSpeech, Lyrebird.
Listen in ogg, spx, or mp3 format. Series: Linux Inlaws | Comments (0)

In this episode, Chris is harassed by quite a few artificial nuisance callers, among drug lords, Irish nurses and some random Linux Inlaws Chief Financial Officer. Based on these examples, our two heroes discuss the history and current state of text-to- speech (TTS) and voice recognition. We attempted to use voice recognition software in order to produce a transcript of the show.


hpr3218 :: An introduction to Darktable

A brief introduction to RAW photography, the Darktable application, and then sheep may safely graze

Hosted by Paul Quirk on 2020-12-02 is flagged as Clean and released under a CC-BY-SA license.
Tags: darktable,RAW,photo,photography,editing.
Listen in ogg, spx, or mp3 format. Comments (1)

hpr3217 :: Sump Minion

My first Internet of Things device, without using python

Hosted by Brian in Ohio on 2020-12-01 is flagged as Clean and released under a CC-BY-SA license.
Tags: raspberry pi, slackware.
Listen in ogg, spx, or mp3 format. Series: Hobby Electronics | Comments (0)

1 introduction

1.1 back in Ohio using my regular voice
1.2 espeak is no worse than operat0rs audio and we all love his shows.

2 the problem

2.1 where i live the water table is high and basement flooding is a problem
2.2 to counteract the water table problem houses have sumps in the basement

sump closet
sump closet

sump close up
sump close up

2.2.1 sumps consist of a basin where outside water is collected
2.2.2 a pump, usually electric, that drains the sump
2.2.3 also a good sump system will have some type of backup pump

2.3 the 'real' problem happens when the sump pump(s) fail
2.3.1 primary pumps fail in many ways, mechanical motor failures, floats sticking electrical outage
2.3.2 secondary pumps also fail battery problems, mechanical problems
2.3.3 i wanted a notification system that would let me know that the water level in my sump was rising. i wanted it set so that if the water level hits where the secondary system kicks in i would get some ind of notification. i wanted a system that would not use python or some kind of 'home spy' system available from some friendly corporation.

3 the solution

3.1 a raspberrry pi, a simple transistor circuit, a c library that allows access to the pi's gpio's, mutt mail client, some bash scripting and a cron job

The probe is meerly 2 wires on the end of a pvc pipe. one wire is higher up on the pipe than the other when both wires are submerged, the circuit is complete. the wires are just some old stuff from a stripped out ethernet cable. you could easily cascade anumber of these circuits and provide a water level meter something like this,
water level meter
, instead of running leds, you'd hook each end to a gpio pin on the pie.

In picture 2, the closeup you can see the probe its the small pvc pipe with the blue wires running along the side. I attached the end of the wires to the pipe by stripping the ends and wrapping them around a small 1/2" self tapping screw. then I screwed one in towards the bottom and on higher up. the one higer up determines when the water alarm goes off.

4 implementation

4.1 raspberry pi 3b+
4.1.1 install slackware
4.1.2 access to gpio's initially sysfs, its deprecated i was unable to get libgpio to compile other solutions python. wiringpi, project dead a library pigpiod slackbuilds pigpiod
4.1.3 the circuit a rework of a forrest mims water alarm circuit

circuit diagram
circuit diagram

4.1.4 mutt
4.1.5 email to text
4.1.6 the script




#if its 6am send system running sanity text
if [ $(date | cut -c 12-16) == "06:00" ]; then

#check to make sure daemon is running
if [ "$(pidof pigpiod)" == "" ]; then
   echo "Something is wrong, pigpiod is not running." | mutt -s "mutt message" $ADDRESS1
   #make sure pin 4 is input, pin 17 output
   if [ "$(pigs modeg $SENSOR)" = $OUTPUT ]; then
      pigs modes $SENSOR R
   if [ "$(pigs modeg $RELAY)" = $INPUT ]; then
      pigs modes $RELAY W
      echo "System running." | mutt -s "mutt message" $ADDRESS1

#if its the first wednesday of the month, run a system test
if [ $(date | cut -c 1-3) `= "Wed" ] && [ $(date | cut -c 12-16) =' "12:00" ] && [ $(date | cut -c 9-10) -lt "8" ]; then
   echo "Monthly Test." | mutt -s "mutt message" $ADDRESS1
   pigs w $RELAY $ON
   sleep 1

   if [ $(pigs r $SENSOR) = 0 ]; then
     echo "Test Passed!" | mutt -s "mutt message" $ADDRESS1
     echo "Something is wrong!" | mutt -s "mutt message" $ADDRESS1

#check to see if water is rising, has the reading on pin 4 been driven low?
if [ $(pigs r $SENSOR) = 0 ]; then
   echo "Alert! The water is rising!" | mutt -s "mutt message" $ADDRESS1

testing on breadboard
testing on breadboard

strip board
strip board

final installation
final installation

5 conclusion

5.1 fun project, shows the power of linux and floss and hope it inspires you

hpr3216 :: Buying a second home in France

Steps I have taken up to now for buying a second home in another country

Hosted by Jeroen Baten on 2020-11-30 is flagged as Clean and released under a CC-BY-SA license.
Tags: second-house,france.
Listen in ogg, spx, or mp3 format. Comments (0)

hpr3215 :: Why I Gave Away a 3-D Printer

I briefly had a 3-D printer and gave it away. This is why.

Hosted by Ahuka on 2020-11-27 is flagged as Clean and released under a CC-BY-SA license.
Tags: 3-D Printers, prosthetics.
Listen in ogg, spx, or mp3 format. Comments (0)

Ken Fallon asked for shows abut 3-D printers and I told him I had given mine away. So of course he asked for a show about why I had done that. This is that show.

hpr3214 :: Rant about websites

I go over history of websites and the complex nature of security in complex websites

Hosted by operat0r on 2020-11-26 is flagged as Explicit and released under a CC-BY-SA license.
Tags: internet,security,history,html.
Listen in ogg, spx, or mp3 format. Comments (0)

In this show I go over history of websites and the complex nature of security in complex websites

hpr3213 :: Electrical Safety

I discuss why and how I stay safe when working with electricity, with some ear candy at the end.

Hosted by Paul Quirk on 2020-11-25 is flagged as Clean and released under a CC-BY-SA license.
Tags: Electrical,safety,code,electricity,electrocution.
Listen in ogg, spx, or mp3 format. Comments (2)

Please be safe!

hpr3212 :: A Pi Model 3B as your daily driver? You must be joking.

Beeza's laptop is away being fixed. Can he manage for a few days using just his Raspberry Pi 3B?

Hosted by Beeza on 2020-11-24 is flagged as Clean and released under a CC-BY-SA license.
Tags: Raspberry Pi, Software Review.
Listen in ogg, spx, or mp3 format. Comments (0)

My Dell laptop had to go away to have a new cooling fan fitted. I've got 3 other laptops to call upon, but instead I decided to conduct an experiment I've theorised about for ages. Could a Raspberry Pi 3B serve as my daily driver?

This idea goes back some way and since then, of course, the much more powerful model 4 has been released. However, there must be thousands of 3Bs out there doing nothing, so perhaps they could have a new lease of life providing basic browsing and internet capabilities to people who might otherwise not be in a position to buy a computer.

Hardware: Raspberry Pi Model 3B
OS: Raspberry Pi OS (current version as of 31st October 2020)
MicroSD: SanDisk 16GB


  • Audio Editor: mhWaveEdit 1.4.23
  • Audio Format Converter: SoundConverter 2.1.3
  • Image Editor: GIMP 2.10

hpr3211 :: Chainsaws

Info about chainsaws and what I know so far!

Hosted by operat0r on 2020-11-23 is flagged as Explicit and released under a CC-BY-SA license.
Tags: outdoors,outdoor,outside,mechanic,small engine repair,repair,home,home repair,chainsaws.
Listen in ogg, spx, or mp3 format. Comments (0)

In this episode operat0r shares his experiences with chainsaws.

Previous five weeks

hpr3210 :: GIMP: Patterns and Gradients hosted by Ahuka

Released: 2020-11-20. Duration: 00:22:17. Flag: Clean. Series: GIMP.
Tags: GIMP, images, photos, graphics, patterns, gradients.
Patterns and Gradients are useful for drawing with more than just color.

hpr3209 :: Linux Inlaws S01E17: Nextcloud hosted by monochromec

Released: 2020-11-19. Duration: 01:09:49. Flag: Explicit. Series: Linux Inlaws.
Tags: Nextcloud, PHP, Golang, forking a company, technical debt.
Chat with Frank Karlitschek about Nextcloud and forking your company

hpr3208 :: The Paul Quirk show: Wacom with Pinebook, and thoughts on the DMCA takedown hosted by Paul Quirk

Released: 2020-11-18. Duration: 00:18:40. Flag: Clean.
Tags: Pinebook,Pro,Wacom,tablet,DMCA,takedown,Youtube,Canadian,Canada,Music.
I got a Wacom tablet to use with my Pinebook, and then share my thoughts on the recent DMCA takedown

hpr3207 :: Fireside chat with E Nigma hosted by Ken Fallon

Released: 2020-11-17. Duration: 01:03:19. Flag: Explicit.
Tags: HPR, TWAT, DDP, Infonomicon, Binrev, RFA.
Ken talks to the original HPR and Today with a Techie Admin.

hpr3206 :: Dungeons and Dragons for the blind hosted by klaatu

Released: 2020-11-16. Duration: 00:58:31. Flag: Clean. Series: Tabletop Gaming.
Tags: dnd,blind,inclusive,5e,tabletop,rpg.
I discuss some easy workarounds to make tabletop RPGs easy for both sighted and non-sighted players

hpr3205 :: Backups of your Backups of Backups hosted by operat0r

Released: 2020-11-13. Duration: 00:53:25. Flag: Explicit.
Tags: backups,cloud,spideroak,backup,cloud backup,cloud backups.
Do you have backups of your backups? Well you better! Listen to this rant

hpr3204 :: Getting Started in 3D Printing hosted by Thaj Sara

Released: 2020-11-12. Duration: 00:16:00. Flag: Explicit.
Tags: 3D Printing.
Thaj gives his opinions and recommendations on how to get started in 3D printing

hpr3203 :: The Paul Quirk show: Retro Computing hosted by Paul Quirk

Released: 2020-11-11. Duration: 00:30:38. Flag: Clean.
Tags: retro,computing,Paul Quirk show,commodore,64,128,Vic 20,apple,ii,coco,8 bit,PET,Atari.
I discuss the hobby of retro computing in this episode.

hpr3202 :: A big Question hosted by Padraig Jeroen Fallon

Released: 2020-11-10. Duration: 00:18:38. Flag: Clean. Series: Tabletop Gaming.
Tags: DND, Vampires, Lich, Undead, Halloween.
In his first show, Padraig asks a big life question. Well ok more like an undead question.

hpr3201 :: A small intro to 3D printing hosted by Jeroen Baten

Released: 2020-11-09. Duration: 00:11:28. Flag: Clean.
Tags: 3D-printing.
Everything a newbie needs to know to start 3D printing

hpr3200 :: Better Social Media 17 - OcapPub hosted by Ahuka

Released: 2020-11-06. Duration: 00:18:45. Flag: Clean. Series: Social Media.
Tags: social media, alternative, Fediverse, ActivityPub, OcapPub.
How using Object Capabilities within ActivityPub could solve some problems with social media.

hpr3199 :: Bad Audio Weed Eater Bugs Sprinkler and Bubbles ! hosted by operat0r

Released: 2020-11-05. Duration: 00:25:16. Flag: Explicit.
Tags: home improvement,home repair,outdoors,outside .
Pushing the definition of "Audible" to the limit, join us for some home repair tips

hpr3198 :: Income Life insurance and then Chopin hosted by Paul Quirk

Released: 2020-11-04. Duration: 00:23:01. Flag: Clean.
Tags: Income,life,insurance,investment,investing,Chopin.
I talk about my thoughts on Income Life insurance, and then we listen to some Chopin

hpr3197 :: Pens, pencils, paper and ink - 3 hosted by Dave Morriss

Released: 2020-11-03. Duration: 00:23:40. Flag: Explicit. Series: The art of writing.
Tags: fountain pen,gel pen,mechanical pencil,ink,paper.
Looking at another batch of writing equipment

hpr3196 :: HPR Community News for October 2020 hosted by HPR Volunteers

Released: 2020-11-02. Duration: 01:29:35. Flag: Explicit. Series: HPR Community News.
Tags: Community News.
Dave and Ken review the months happenings, and try various pronunciations of Cedric De Vroeys name.

hpr3195 :: For your Consideration - the ideal Ham Radio setup hosted by Archer72

Released: 2020-10-30. Duration: 00:57:50. Flag: Clean. Series: Podcast recommendations.
Tags: linux, security, amateur radio.
Introducing a new podcast to me, with a special guest with an interest in amateur radio.

hpr3194 :: Linux Inlaws S01E16: The count and the questions hosted by monochromec

Released: 2020-10-29. Duration: 01:07:41. Flag: Explicit. Series: Linux Inlaws.
Tags: Count, questions, vlad, legends, Halloween.
Linux Inlaws S01E16: This is Linux Inlaws, a series on free and open source software, black humour a

hpr3193 :: Meet Antithesis hosted by Paul Quirk

Released: 2020-10-28. Duration: 00:32:26. Flag: Clean. Series: Hardware upgrades.
Tags: Pinebook,Pro,64,unboxing.
Meet my new computer, a Pinebook Pro, as I explain my rationale, unbox it, and set it up.

hpr3192 :: A light bulb moment, part 3 hosted by MrX

Released: 2020-10-27. Duration: 00:12:57. Flag: Explicit.
Tags: Electrical, Hacks.
The LED revolution

hpr3191 :: Swedish Corona Experience hosted by Daniel Persson

Released: 2020-10-26. Duration: 00:16:09. Flag: Clean. Series: Health and Healthcare.
Tags: corona, sweden.
I will cover my experience of the Corona virus

hpr3190 :: GIMP Brushes hosted by Ahuka

Released: 2020-10-23. Duration: 00:20:19. Flag: Clean. Series: GIMP.
Tags: GIMP, images, photos, graphics, brushes.
Paint tools, and particularly the Paintbrush Tool, require the use of brushes.

hpr3189 :: How the Dutch dig Graves hosted by Ken Fallon

Released: 2020-10-22. Duration: 00:02:43. Flag: Explicit.
Tags: graves, sand, How Holland Works, Dutch, Netherlands.
Ken explains how they dig graves when the ground is essentially sand

hpr3188 :: Thrift store quick fix hosted by Archer72

Released: 2020-10-21. Duration: 00:01:07. Flag: Clean.
Tags: sewing.
Fixing up a dog coat for the cool weather.

hpr3187 :: Ansible for Dynamic Host Configuration Protocol hosted by norrist

Released: 2020-10-20. Duration: 00:08:38. Flag: Clean.
Tags: ansible, dhcp, dns, openbsd.
How I use ansible to configure my OpenBSD router

hpr3186 :: A light bulb moment, part 2 hosted by MrX

Released: 2020-10-19. Duration: 00:07:30. Flag: Clean.
Tags: Hardware, electrical.
The history of lighting

hpr3185 :: Pandemics In History hosted by Ahuka

Released: 2020-10-16. Duration: 00:17:42. Flag: Clean. Series: Health and Healthcare.
Tags: Health, Infectious Disease, History, Pandemics.
Infectious disease is one of the most important factors influencing human history

hpr3184 :: Linux Inlaws S01E15: IT Security and stick insects hosted by monochromec

Released: 2020-10-15. Duration: 00:56:08. Flag: Clean. Series: Linux Inlaws.
Tags: IT Security, stick insects, Rainbow Escorts, Grumpy Old Coders.
How to secure photos of your stick insect collection and more

hpr3183 :: Don't trust zipfiles hosted by Cedric De Vroey

Released: 2020-10-14. Duration: 00:04:37. Flag: Clean. Series: Privacy and Security.
Tags: pentesting,security,hacking,zip.
Zipfiles can contain all kinds of evilness and unpacking them can lead to unexpected results

hpr3182 :: Yo-ho-ho, and a bottle of Cholecalciferol hosted by Dave Morriss

Released: 2020-10-13. Duration: 01:19:23. Flag: Explicit.
Tags: COVID-19,SARS-Cov-2,Vitamin D,6502 microprocessor,BBC Micro.
From Scotland, two HPR hosts chew the fat

hpr3181 :: RealVNC cloud offering hosted by JWP

Released: 2020-10-12. Duration: 00:04:22. Flag: Explicit.
Tags: realvnc, remote computing.
JWP emails in a show about using VNC while out and about

hpr3180 :: GIMP: Miscellaneous Tools hosted by Ahuka

Released: 2020-10-09. Duration: 00:13:23. Flag: Clean. Series: GIMP.
Tags: GIMP, images, photos, graphics, paths, zoom, GEGL.
These few remaining tools are important, but don't fit neatly into one category.

hpr3179 :: MakeMKV to back up media, and a Question hosted by Archer72

Released: 2020-10-08. Duration: 00:06:44. Flag: Clean.
Tags: dvd, blu-ray, backup.
Describing two ways to install MakeMKV DVD/Blu-ray backup program on Fedora 32

hpr3178 :: Finishing the Recumbent Bicycle hosted by Brian in Ohio

Released: 2020-10-07. Duration: 00:04:19. Flag: Clean. Series: Bicycle Hacking.
Tags: bicycle, recumbent.
While channeling Stephen Hawking, Brian in Ohio describes finishing and riding the bike

hpr3177 :: Zero cost VPN hosted by norrist

Released: 2020-10-06. Duration: 00:06:47. Flag: Clean.
Tags: VPN, OpenVPN.
OpenVPN on a Free Tier VPS for securing phone trafic

hpr3176 :: HPR Community News for September 2020 hosted by HPR Volunteers

Released: 2020-10-05. Duration: 01:09:47. Flag: Explicit. Series: HPR Community News.
Tags: Community News.
HPR Volunteers talk about shows released and comments posted in September 2020

hpr3175 :: International Keyboard hosted by Ahuka

Released: 2020-10-02. Duration: 00:11:21. Flag: Clean.
Tags: Spanish, Language learning, typing foreign characters.
How I learned to implement a keyboard that lets me type in Spanish

hpr3174 :: Linux Inlaws S01E14: The big programming language panel hosted by monochromec

Released: 2020-10-01. Duration: 00:52:54. Flag: Explicit. Series: Linux Inlaws.
Tags: C++, Python, Rust, Rainbow Escorts, Halloween.
Our heroes host an eclectic panel of experts discussion C(++), Python and Rust.

hpr3173 :: Manage your Raspberry Pi fleet with Ansible hosted by Ken Fallon

Released: 2020-09-30. Duration: 00:20:09. Flag: Clean.
Tags: raspberrypi, rasbian, ansible,
A solution to the problem of updating difficult-to-reach Raspberry Pis in the enterprise.

hpr3172 :: A ramble with the Pentland Squires (part 2) hosted by Dave Morriss

Released: 2020-09-29. Duration: 00:49:43. Flag: Explicit.
Tags: COVID-19,physical isolation,discussion.
Second half of the chat between MrX and Dave Morriss

hpr3171 :: A Week On Soylent hosted by lostnbronx

Released: 2020-09-28. Duration: 00:12:15. Flag: Clean.
Tags: soylent, food, health, diet, lostnbronx.
Lostnbronx tries eating nothing but Soylent, so you don't have to.

Older Shows

Get a full list of all our shows.