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  1. Hello citizen of the Internet, my name is njulian, and in my first Episode for HPR I want to talk about an App called "Microphone". This App is available for Android in the F-Droid repository, link is in the Shownotes. All it does is sending the audio input from the microphone directly into the audio output. This causes horrible feedback loops, if the output happens to be the Phone's speakers. But if you plug a Male-to-Male 3.5mm cable into your Phone and the other end into your Computer you can use your Smartphone as a Microphone. Actually I am using this right now to record this show with Audacity on my Laptop. The reasons for that are pretty simple: I don't have enough free space on my Phone to record a show with Urecord and the other is that I was curious if this app really works. Well, actually there is not much more I could tell about the App. It has no menu, no way to customize it, and as you can hear no noise suppression. That's about it, thanks for listening. The App: The Cable: Links View the full article
  2. NEW 'Off The Hook' ONLINE

    NEW 'Off The Hook' ONLINE Posted 05 May, 2016 4:40:33 UTC The new edition of Off The Hook from 04/05/2016 has been archived and is now available online. "Off The Hook" - 04/05/2016 Download the torrent here!!!! View the full article
  3. HPR - HPR2024: Remapping Keys with xmodmap

    In this episode I talk about how I tried to implement an idea that my son had when we were talking one day. I was complaining about file names with spaces in them, and he asked what if the computer automatically changed the spacebar so that it made underscores whenever somebody was trying to save a file? I thought this was a great idea. I even thought of a way implement it, though not quite as magically as he had envisioned. My solution involves the use of the command-line tools xev and xmodmap, and one blather voice prompt to launch the xmodmap command that will remap the spacebar to make underscores instead. Maybe somebody a whole lot smarter than me can figure out how to make this happen automatically whenever a save dialog box is open. First you need to find the keycode for your spacebar. Run the xev command and then press the spacebar to see which key code it is. Here's the output on my laptop: KeyPress event, serial 48, synthetic NO, window 0x4e00001, root 0xc0, subw 0x0, time 116149126, (-739,-226), root:(448,358), state 0x0, keycode 65 (keysym 0x20, space), same_screen YES, XLookupString gives 1 bytes: (20) " " XmbLookupString gives 1 bytes: (20) " " XFilterEvent returns: False As you can see, my spacebar has the keycode of "65." Now we use xmodmap to reassign keycode 65 to make underscores: xmodmap -e "keycode 65 = underscore" Now to test it out. While xev is running, press spacebar. Notice that now when the spacebar is pressed it makes an underscore: KeyPress event, serial 57, synthetic NO, window 0x2600001, root 0xc0, subw 0x0, time 116190619, (-520,-247), root:(667,337), state 0x0, keycode 65 (keysym 0x5f, underscore), same_screen YES, XLookupString gives 1 bytes: (5f) "_" XmbLookupString gives 1 bytes: (5f) "_" XFilterEvent returns: False And to change it back: xmodmap -e "keycode 65 = space" Now whenever I want to change the spacebar to make underscores or switch it back, I speak one of the following commands, which are in my blather configuration file. MAKE UNDERSCORES: xmodmap -e "keycode 65 = underscore" MAKE SPACES: xmodmap -e "keycode 65 = space" Links xmodmap man page: xmodmap is a utility for modifying keymaps and pointer button mappings in X xev man page: use xev print contents of X events Video Demonstration View the full article
  4. NEW 'Off The Wall' ONLINE

    NEW 'Off The Wall' ONLINE Posted 04 May, 2016 0:57:42 UTC The new edition of Off The Wall from 03/05/2016 has been archived and is now available online. "Off The Wall" - 03/05/2016 Download the torrent here!!!! View the full article
  5. HPR - HPR2023: Setting up my Raspberry Pi 3

    Setting up my Raspberry Pi 3 I bought a Raspberry Pi 3 in March 2016, soon after it was released. I want to use it as a server since it's the fastest Pi that I own, so I have tried to set it up in the best way for that role. In this episode I describe what I did in case you want to do something similar. Refer to the full notes for the details: Links Pimoroni Pibow 3: Raspberry Pi Universal Power Supply: Raspberry Pi 3 Heatsink: SATA Hard Drive to USB Adapter: SanDisk SSD PLUS 120 GB Sata III 2.5-inch Internal SSD: Kingston Flash Memory Card 32 GB: FLIRC Raspberry Pi 2/3 Case: Adafruit tutorial "Using an External Drive as a Raspberry Pi Root Filesystem": Article by paulv on the Raspberry Pi forums - "HOWTO: Move the filesystem to a USB stick/Drive": Copy of adafruit-pi-externalroot-helper script: Transcript of what happened when I ran the script: View the full article
  6. HPR - HPR2022: Whats in my bag

    Swissgear messenger bag (this link is to a newer version, closest I could find to my 7 year old bag) This bag has been with me since 2009, and for about the last 3 years did double duty, carrying both of my laptops with other assorted gear, and has held up beautifully, No fabric wear, not a stitch or seam broken anywhere. Both zippers are intact and still pull smooth and easily, they haven't even lost the pull-tabs (usually my first issue with any zipper). The handle and the shoulder strap are reasonably comfortable (for a single shoulder strap) and show no signs of wear either. Can't recommend this bag enough if you are looking for a tough messenger bag. If you are going to haul 2 laptops around (plus gear) I would strongly recommend something with 2 shoulder straps though, if you're doing any serious walking about. Toshiba Satellite P855-S5312 I beefed up the ram to 16gb and removed the optical drive in order to install a second hard drive. I also replaced the original 750gb spinning HDD. The new drives were both samsung evo 500gb SSD's. My only real gripe about this laptop is the screen resolution, which maxes out at 1366x768. IMHO, this is a waste of real estate on a 15.6 inch screen. I am looking into this, but replacement with a higher resolution screen seems to be unfeasible, from what I am reading. ( IF YOU HAVE SUGGESTIONS OR KNOW OF A SOLUTION I WOULD LOVE TO HEAR ABOUT IT!!) The old HP Pavillion dv5-1235dx (I dont presently haul this one around anymore) Got this one in '09. nice screen doing 1680x1050 , but I didn't care for the plastic housing. I like the metal case on the toshiba. - although older, I really liked this laptop, and still prefer the keyboard (although somewhat cramped) over the one on my Toshiba. The feel of the keys themselves and the distinctive stroke and light click as you press down through the detent, just feels better than the chiclet keyboard on my newer machine. Incidentally, I once spilled a rum and coke across this thing, keyboard and all, while it was powered down. After dry out and a good cleaning, it fired up and still works. I don't recommend trying to re create this experiment though. Dumb luck, I suppose. I was sure it would be a deader. Wacom intuos cth480 pen/touch tablet (this thing isn't available in this form anymore) these are very nice and work out of the box for me on debian, and mint, (cant speak for other distros). Getting the pen's pressure sensitivity settings in some drawing programs (krita, gimp, etc) can sometimes be a bit fiddly and sometimes hard to find. Overall works quite well, although I am not a professional artist. Trucker, remember? Fun to play with, and reasonably small so its good travel size. Toshiba 2TB 'canvio' portable hard drive Western Digital 2TB 'my passport ultra' portable hard drive I carry one of these (WD) for extra storage and backups of my laptop. The other ( the Toshiba) I use mostly for storage of my movies and TV series collections (gotta have your firefly fix, right?). As to which one is better, I prefer the case on the Toshiba, just seems more durable in that high impact plastic, but I will let you know when one of them fails me :) and for those real long distance wifi signals (and/or getting into monitor mode): TP-LINK TL-WN722N Wireless N150 High Gain USB Adapter (wifi antennae) 150Mbps Alfa AWUS036H High power 1000mW with 5dBi Rubber Antenna and a 7dBi Panel Antenna NooElec R820T SDR & DVB-T NESDR Mini A lightweight toy for playing with software defined radio (SDR) programs, which you can see at if you want IFIXIT 54 bit driver kit, very handy for ripping open your gear. Crappy tools make for a crappy day, right? "disposable" reading glasses (missed these in the audio) zebra f-301 ballpoint pens, black ink, 2 in fine point and 2 in medium several cheap highlighter markers and one sharpie Just to be clear...I included many of the links here from Amazon and other shopping sites, or from c-net, because I couldn't see how to load my pictures in with the notes, not because I want to give product reviews or sell anyone anything. I know it can be done, because I see it elsewhere, I'm just too tired to figure it out now. next one. As I understand it, I owe at least 2-3 shows. Be patient with me Ken, I'm workin' on it. Links View the full article
  7. New hosts Welcome to our new hosts: Joe, brian. Last Month's Shows Id Day Date Title Host 2000 Fri 2016-04-01 How to Point a Satellite Dish Ken Fallon 2001 Mon 2016-04-04 HPR Community News for March 2016 HPR Volunteers 2002 Tue 2016-04-05 Just got a Raspberry Pi Zero swift110 2003 Wed 2016-04-06 Using the Incron file watching daemon b-yeezi 2004 Thu 2016-04-07 A First Look at the Owon B35T NYbill 2005 Fri 2016-04-08 How I prepare and record my HPR Kdenlive voiceover shows. Geddes 2006 Mon 2016-04-11 Basic Audio Production - Compression Nacho Jordi 2007 Tue 2016-04-12 My new laptop Dave Morriss 2008 Wed 2016-04-13 HPR needs shows to survive. Ken Fallon 2009 Thu 2016-04-14 Understanding the GNU/Screen Hardstatus line Curtis Adkins (CPrompt^) 2010 Fri 2016-04-15 Parsing JSON with Python klaatu 2011 Mon 2016-04-18 Introduction to sed - part 4 Dave Morriss 2012 Tue 2016-04-19 Parsing XML in Python with Untangle klaatu 2013 Wed 2016-04-20 Parsing XML in Python with Xmltodict klaatu 2014 Thu 2016-04-21 A first look at the Owon B35T Part 2 NYbill 2015 Fri 2016-04-22 Linux in the Church Joe 2016 Mon 2016-04-25 Echoprint laindir 2017 Tue 2016-04-26 Here are my thoughts on a 3D printer Kit. cheeto4493 2018 Wed 2016-04-27 How to make Komboucha Tea b-yeezi 2019 Thu 2016-04-28 a pi project and an owncloud project Matt McGraw (g33kdad) 2020 Fri 2016-04-29 Automotive Billing brian Mailing List discussions Policy decisions surrounding HPR are taken by the community as a whole. This discussion takes place on the Mail List which is open to all HPR listeners and contributors. The discussions are open and available on the Gmane archive. The main threads this month were: From: NYbill <nybill@...> Date: 2016-04-04 17:08:54 -0400 Subject: Fwd: Re: Defaults... Link: Messages: 1 From: Ken Fallon <ken@...> Date: 2016-04-05 20:20:08 +0200 Subject: Call for shows Link: Messages: 5 From: Mike Ray <mike@...> Date: 2016-04-06 13:45:38 +0100 Subject: HTML notes accessibility pointer Link: Messages: 7 From: Curtis Adkins <curtadkins@...> Date: 2016-04-09 21:26:57 -0400 Subject: Upload show issue Link: Messages: 2 From: Ken Fallon <ken@...> Date: 2016-04-12 08:12:09 +0200 Subject: Fwd: CFP for Full Stack Fest 2016 has opened! Link: Messages: 1 From: Ken Fallon <ken@...> Date: 2016-04-19 13:21:58 +0200 Subject: 11th Annual People's Podcast Awards Link: Messages: 1 From: Ken Fallon <ken@...> Date: 2016-04-21 15:46:34 +0200 Subject: Fwd: for your podcast: interview about FOSS situation in Russia Link: Messages: 1 From: Frank Bell <frankwbell@...> Date: 2016-04-21 13:37:59 -0400 Subject: Proposed New Series Link: Messages: 8 From: Carl D Hamann <carl.hamann@...> Date: 2016-04-22 10:42:04 -0500 Subject: Re: Proposed New Series Link: Messages: 2 From: Dave Morriss <perloid@...> Date: 2016-04-25 15:27:13 +0100 Subject: HPR Community News - next Saturday on 2016-04-30T18:00:00Z Link: Messages: 5 From: Fifty OneFifty <fiftyonefifty@...> Date: 2016-04-25 21:56:10 -0500 Subject: Re: Hpr Digest, Vol 91, Issue 11 Link: Messages: 3 From: Carl D Hamann <carl.hamann@...> Date: 2016-04-25 23:01:41 -0500 Subject: Re: HPR Community News - next Saturday on 2016-04-30T18:00:00Z Link: Messages: 1 From: Dave Morriss <perloid@...> Date: 2016-04-30 18:21:57 +0100 Subject: Re: HPR Community News - next Saturday on 2016-04-30T18:00:00Z Link: Messages: 1 Total messages this month: 38 Comments this month These are comments which have been made during the past month, either to shows released during the month or to past shows. There are 46 comments: hpr1987 (2016-03-15) "Pomodoro Timer - The Evolution of a Script (pt 1)" by Nacho Jordi. Comment 2: David L. Willson on 2016-04-17: "changed my life" hpr1990 (2016-03-18) "Pomodoro Timer - The Evolution of a Script part deux" by Nacho Jordi. Comment 1: David L. Willson on 2016-04-17: "found it!" hpr1993 (2016-03-23) "Can your window manager do this?" by Nacho Jordi. Comment 1: sigflup on 2016-04-04: "ratpoison" hpr1996 (2016-03-28) "Xdotool magic" by Nacho Jordi. Comment 1: Urugami on 2016-04-18: "File Naming" hpr1998 (2016-03-30) "Homebrewing" by m1rr0r5h4d35. Comment 2: Ken Fallon on 2016-04-07: "Would love to hear the full recoring" hpr1999 (2016-03-31) "How I record a full band under Linux" by noplacelikeslashhome. Comment 1: Jon Kulp on 2016-04-01: "More on Ardour!" Comment 2: Ken Fallon on 2016-04-06: "More detail" hpr2000 (2016-04-01) "How to Point a Satellite Dish" by Ken Fallon. Comment 1: Mike Ray on 2016-04-04: "I tried very hard..." Comment 2: droops on 2016-04-04: "Very Good" Comment 3: Frank on 2016-04-05:"[no title]" Comment 4: Ken Fallon on 2016-04-06: "Beep" hpr2001 (2016-04-04) "HPR Community News for March 2016" by HPR Volunteers. Comment 1: Jon Kulp on 2016-04-04: "Not a Timing Belt" hpr2002 (2016-04-05) "Just got a Raspberry Pi Zero" by swift110. Comment 1: Ken Fallon on 2016-04-06: "I'm so jealous" hpr2003 (2016-04-06) "Using the Incron file watching daemon" by b-yeezi. Comment 1: Ken Fallon on 2016-04-06: "Installing this now" hpr2004 (2016-04-07) "A First Look at the Owon B35T" by NYbill. Comment 1: Ken Fallon on 2016-04-07: "daisy chain" Comment 2: NYbill on 2016-04-07: "Americanism's?" Comment 3: Dave Morriss on 2016-04-07: "Not an Americanism to my knowledge" Comment 4: Ken Fallon on 2016-04-08: "Why not what" Comment 5: NYbill on 2016-04-08:"[no title]" hpr2005 (2016-04-08) "How I prepare and record my HPR Kdenlive voiceover shows." by Geddes. Comment 1: NYbill on 2016-04-10: "Well done." Comment 2: Ken Fallon on 2016-04-17: "Such Effort" hpr2006 (2016-04-11) "Basic Audio Production - Compression" by Nacho Jordi. Comment 1: Ken Fallon on 2016-04-17: "Great Addition" hpr2007 (2016-04-12) "My new laptop" by Dave Morriss. Comment 1: Ken Fallon on 2016-04-17: "Suspect" Comment 2: Dave Morriss on 2016-04-18: "I dunno what you're talking about" Comment 3: Alpha32 on 2016-04-26: "Interesting show" hpr2008 (2016-04-13) "HPR needs shows to survive." by Ken Fallon. Comment 1: 0xf10e on 2016-04-13: "But Ken, " Comment 2: Jonathan Kulp on 2016-04-14: "sure you can!" Comment 3: Ken Fallon on 2016-04-17: "Thanks" hpr2009 (2016-04-14) "Understanding the GNU/Screen Hardstatus line" by Curtis Adkins (CPrompt^). Comment 1: Ken Fallon on 2016-04-22: "Great show" hpr2010 (2016-04-15) "Parsing JSON with Python" by klaatu. Comment 1: Zen_Floater2 on 2016-04-14: "squirrel" Comment 2: Ken Fallon on 2016-04-22: "Don't like xpath !" hpr2011 (2016-04-18) "Introduction to sed - part 4" by Dave Morriss. Comment 1: b-yeezi on 2016-04-18: "Wow" Comment 2: Dave Morriss on 2016-04-19: "Thanks" Comment 3: Ken Fallon on 2016-04-22: "Nice one" hpr2012 (2016-04-19) "Parsing XML in Python with Untangle" by klaatu. Comment 1: Ken Fallon on 2016-04-22: "Normal Parsers" hpr2013 (2016-04-20) "Parsing XML in Python with Xmltodict" by klaatu. Comment 1: sigflup on 2016-04-19: "cool" Comment 2: Ken Fallon on 2016-04-22: "large complex files " hpr2014 (2016-04-21) "A first look at the Owon B35T Part 2" by NYbill. Comment 1: Mike Ray on 2016-04-21: "Great Show" Comment 2: NYbill on 2016-04-21: "Its a brand new bench! " Comment 3: Ken Fallon on 2016-04-25: "Logging in android" hpr2015 (2016-04-22) "Linux in the Church" by Joe. Comment 1: jan on 2016-04-24:"[no title]" Comment 2: Ken Fallon on 2016-04-25: "Great episode" hpr2016 (2016-04-25) "Echoprint" by laindir. Comment 1: Ken Fallon on 2016-04-25: "Thank you Thank you Thank you Thank you " hpr2019 (2016-04-28) "a pi project and an owncloud project" by Matt McGraw (g33kdad). Comment 1: Matt (g33kdad) on 2016-04-23: "Some photos" Comment 2: Jonathan Kulp on 2016-04-30: "Muttonchop too" hpr2020 (2016-04-29) "Automotive Billing" by brian. Comment 1: Frank on 2016-04-30:"[no title]" View the full article
  8. HPR - HPR2020: Automotive Billing

    I get a call to look at my friend's broke down car. View the full article
  9. NEW 'Off The Hook' ONLINE

    NEW 'Off The Hook' ONLINE Posted 28 Apr, 2016 2:41:19 UTC The new edition of Off The Hook from 27/04/2016 has been archived and is now available online. "Off The Hook" - 27/04/2016 Download the torrent here!!!! View the full article
  10. HPR - A couple of Projects I've been working on Intro Please record a show!!!!! Couple of Projects Pi Project Love of Music Digital, of course and webradio Sonos, other proprietary solutions Got a Pi2 for XMas Pi Music Box RuneAudio Arch Based underlying tech is MPD flash SD Card boot with network cable attached add music and webradios to library .pls and .m3u files PhotoFrame Project proprietary items tablet/smart phone lying around ownCloud update for my parents on the road Links and other Goodies Pi Project SomaFM Capital Public Radio Sonos Samsung Shape PiMusicBox Rune Audio Music Player Daemon USB Audio Dongle (amazon link... NOT an affiliate link) PicFrame Project ownCloud Kindle Fire HD 6 PicFrame PicFrame Android App Contact Info Matt McGraw - matty at the strangeland dot net Stay-At-Home G33k Dad ~ Fatherhood in the digital age @sahg33kdad Google+ The following link includes a photo of the RPi in the bookshelf with the stereo as well as a screenshot of the Rune Audio app running on my Android phone. View the full article
  11. NEW 'Off The Wall' ONLINE

    NEW 'Off The Wall' ONLINE Posted27 Apr, 2016 1:50:44 UTC The new edition of Off The Wallfrom 26/04/2016 has been archived and is now available online. "Off The Wall" - 26/04/2016 Download the torrent here!!!! View the full article
  12. HPR - HPR2018: How to make Komboucha Tea

    How to Make Kamboucha Tea Makes about 1 gallon Ingredients Ingredient US Metric water 3 1/2 quarts ?? white sugar 1 cup ?? black tea 8 bags (or 2 tablespoons loose tea) ?? starter tea from last batch of kombucha or store-bought 2 cups ?? scoby 1 per fermentation jar N/A Optional flavoring extras for bottling: 1 to 2 cups chopped fruit, 2 to 3 cups fruit juice, 1 to 2 tablespoons flavored tea (like hibiscus or Earl Grey), 1/4 cup honey, 2 to 4 tablespoons fresh herbs or spices Equipment Stock pot 1-gallon glass jar or two 2-quart glass jars Bottles: Six 16-oz glass bottles with plastic lids, 6 swing-top bottles, or clean soda bottles Instructions Note: Avoid prolonged contact between the kombucha and metal both during and after brewing. This can affect the flavor of your kombucha and weaken the scoby over time. 1. Make the Tea Base:Bring the water to a boil. Remove from heat and stir in the sugar to dissolve. Drop in the tea and allow it to steep until the water has cooled. Depending on the size of your pot, this will take a few hours. You can speed up the cooling process by placing the pot in an ice bath. 2. Add the Starter Tea:Once the tea is cool, remove the tea bags or strain out the loose tea. Stir in the starter tea. (The starter tea makes the liquid acidic, which prevents unfriendly bacteria from taking up residence in the first few days of fermentation.) 3. Transfer to Jars and Add the Scoby:Pour the mixture into a 1-gallon glass jar (or divide between two 2-quart jars, in which case you'll need 2 scobys) and gently slide the scoby into the jar with clean hands. Cover the mouth of the jar with a few layers of cheesecloth or paper towels secured with a rubber band. 4. Ferment for 7 to 10 Days:Keep the jar at room temperature, out of direct sunlight, and where it won't get jostled. Ferment for 7 to 10 days, checking the kombucha and the scoby periodically. It's not unusual for the scoby to float at the top, bottom, or even sideways. A new cream-colored layer of scoby should start forming on the surface of the kombucha within a few days. It usually attaches to the old scoby, but it's ok if they separate. You may also see brown stringy bits floating beneath the scoby, sediment collecting at the bottom, and bubbles collecting around the scoby. This is all normal and signs of healthy fermentation. After seven days, begin tasting the kombucha daily by pouring a little out of the jar and into a cup. When it reaches a balance of sweetness and tartness that is pleasant to you, the kombucha is ready to bottle. 5. Remove the Scoby:Before proceeding, prepare and cool another pot of strong tea for your next batch of kombucha, as outlined above. With clean hands, gently lift the scoby out of the kombucha and set it on a clean plate. As you do, check it over and remove the bottom layer if the scoby is getting very thick. 6. Bottle the Finished Kombucha:Measure out your starter tea from this batch of kombucha and set it aside for the next batch. Pour the fermented kombucha (straining, if desired) into bottles, along with any juice, herbs, or fruit you may want to use as flavoring. Leave about a half inch of head room in each bottle. (Alternatively, infuse the kombucha with flavorings for a day or two in another jar covered with cheesecloth, strain, and then bottle. This makes a cleaner kombucha without "stuff" in it.) 7. Carbonate and Refrigerate the Finished Kombucha:Store the bottled kombucha at room-temperature out of direct sunlight and allow 1 to 3 days for the kombucha to carbonate. Until you get a feel for how quickly your kombucha carbonates, it's helpful to keep it in plastic bottles; the kombucha is carbonated when the bottles feel rock solid. Refrigerate to stop fermentation and carbonation, and then consume your kombucha within a month. 8. Make a Fresh Batch of Kombucha:Clean the jar being used for kombucha fermentation. Combine the starter tea from your last batch of kombucha with the fresh batch of sugary tea, and pour it into the fermentation jar. Slide the scoby on top, cover, and ferment for 7 to 10 days. Additional Notes: •Batch Size:To increase or decrease the amount of kombucha you make, maintain the basic ratio of 1 cup of sugar, 8 bags of tea, and 2 cups starter tea per gallon batch. One scoby will ferment any size batch, though larger batches may take longer. •Putting Kombucha on Pause:If you'll be away for 3 weeks or less, just make a fresh batch and leave it on your counter. It will likely be too vinegary to drink by the time you get back, but the scoby will be fine. For longer breaks, store the scoby in a fresh batch of the tea base with starter tea in the fridge. Change out the tea for a fresh batch every 4 to 6 weeks. •Other Tea Options:Black tea tends to be the easiest and most reliable for the scoby to ferment into kombucha, but once your scoby is going strong, you can try branching out into other kinds. Green tea, white tea, oolong tea, or a even mix of these make especially good kombucha. Herbal teas are ok, but be sure to use at least a few bags of black tea in the mix to make sure the scoby is getting all the nutrients it needs. Avoid any teas that contain oils, like earl grey or flavored teas. •Avoid Prolonged Contact with Metal:Using metal utensils is generally fine, but avoid fermenting or bottling the kombucha in anything that brings them into contact with metal. Metals, especially reactive metals like aluminum, can give the kombucha a metallic flavor and weaken the scoby over time. Troubleshooting Kombucha • It is normal for the scoby to float on the top, bottom, or sideways in the jar. It is also normal for brown strings to form below the scoby or to collect on the bottom. If your scoby develops a hole, bumps, dried patches, darker brown patches, or clear jelly-like patches, it is still fine to use. Usually these are all indicative of changes in the environment of your kitchen and not a problem with the scoby itself. • Kombucha will start off with a neutral aroma and then smell progressively more vinegary as brewing progresses. If it starts to smell cheesy, rotten, or otherwise unpleasant, this is a sign that something has gone wrong. If you see no signs of mold on the scoby, discard the liquid and begin again with fresh tea. If you do see signs of mold, discard both the scoby and the liquid and begin again with new ingredients. • A scoby will last a very long time, but it's not indestructible. If the scoby becomes black, that is a sign that it has passed its lifespan. If it develops green or black mold, it is has become infected. In both of these cases, throw away the scoby and begin again. • To prolong the life and maintain the health of your scoby, stick to the ratio of sugar, tea, starter tea, and water outlined in the recipe. You should also peel off the bottom (oldest) layer every few batches. This can be discarded, composted, used to start a new batch of kombucha, or given to a friend to start their own. • If you're ever in doubt about whether there is a problem with your scoby, just continue brewing batches but discard the kombucha they make. If there's a problem, it will get worse over time and become very apparent. If it's just a natural aspect of the scoby, then it will stay consistent from batch to batch and the kombucha is fine for drinking. View the full article
  13. I purchased a 3D printer kit from AliExpress. Here are some after thoughts on how I liked it, a little overview of 3D printers and why I bought this one. Pictures of the printer as assembled, and a few items I printed I hope to make this into a series about software, tips and modifications, and other thoughts I have to share about it. Links View the full article
  14. HPR - HPR2016: Echoprint

    Ken's message asking about programmatically checking for the intro and outro: The Echoprint website: Codegen source code: Echoprint - An Open Music Identification Service: Server source code View the full article
  15. HPR - HPR2015: Linux in the Church

    Linux has been my exclusive OS for many years. When I became the tech director at my church I wanted to utilize the power and freedom of Open Source so I'm gradually implementing it on many of my project. View the full article