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Hosted by Jon Kulp on 2020-02-20 is flagged as Clean and released under a CC-BY-SA license.
Tags: Raspberry Pi, Internet Radio, Streaming Radio, Radio, Streaming Audio, Ubuntu, Ubuntu Server.
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In this episode I talk about how I used a Raspberry Pi to create a streaming radio device to feed my pillow speaker. This is something I used to do with clock radios and later a satellite radio, but in an effort to decrease monthly subscription costs for services I did not use optimally, I discontinued my satellite radio subscription about a year ago. This new free solution is an excellent substitute for Satellite Radio so far, since I was mostly listening to this same channel on the Sat Radio but paying about $12 a month for the privilege. The device I’m using is a Raspberry Pi 2 Model B with Ubuntu Server. My barrier to this project in the past was not being able to find the URL for the stream I wanted but I discovered you can find it easily if you use Firefox with Video Download Helper to reveal the URL on a page with media playing (in this case it’s from TuneIn):
http://XX.XXX.XXX.XXX/radio-stationmp3-48?session-id=af1b271fefba04b650f8e253c6b253bd&source=TuneIn
Strip off everything after the 48 to get raw URL:
http://XX.XXX.XXX.XXX/radio-stationmp3-48
Command to play stream with mpg123 on the Pi. Using the -q option to suppress output:
mpg123-pulse -q http://XX.XXX.XXX.XXX/radio-stationmp3-48 &
Once I figure out the command that plays the stream I want, I save the command as an executable script in /home/$user/bin.
To start playing a stream you first have to SSH into the RasPi. This is easy from a laptop using any terminal emulator. I use pubkey auth so I don’t have to type a password every time. On my phone I use ConnectBot. Once I’m into the Pi I run the radio commands from CLI like espn or kmfa or krvs. To stop playback I kill the process with pkill mpg. I have a 3.5mm audio splitter Plugged into the headphone jack of the USB audio interface. In one side of the splitter I’ve got an old pair of earbuds where one side didn’t work, with the working earbud under my pillow. That’s my pillow speaker. On the other side of the splitter I put the audio cable for an FM transmitter, so that I can use an FM radio to listen to the stream while I’m walking around the house.
Click the image below to see pictures of the setup.
Hosted by Dave Morriss on 2020-02-19 is flagged as Explicit and released under a CC-BY-SA license.
Tags: Bash,variable,environment.
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Series: Bash Scripting | Comments (0)
You will probably have seen references to The Environment in various contexts relating to shells, shell scripts, scripts in other languages and compiled programs.
In Unix and Unix-like operating systems an environment is maintained by the shell, and we will be looking at how Bash deals with this in this episode. When a script, program or subprocess is invoked it is given an array of strings called the environment. This is a list of name-value pairs, of the form name=value.
The environment is used to convey various pieces of information to the executing script or program. For example, two standard variables provided by the shell are 'HOME', which is set to the current user’s home directory and 'PWD, set to the current working directory. The shell user can set, change, remove and view environment variables for their own purposes as we will see in this episode. The Bash shell itself creates and in some cases manages environment variables.
The environment contains global data which is passed down to subprocesses (child processes) by copying. However, it is not possible for a subprocess to pass information back to the superior (parent) process.
You can view the environment in a number of ways.
From the command line the command printenv can do this (this is usually but not always a stand-alone command: it’s /usr/bin/printenv on my Debian system). We will look at this command later.
The command env without any arguments does the same thing as printenv without arguments. This is actually a tool to run a program in a modified environment which we will look at later. The environment printing capability can be regarded as more of a bonus feature.
Scripting languages like awk (as well as Python and Perl, to name just a few) can view and manipulate the environment.
Compiled languages such as C can do this too of course.
There are other commands that will show the environment, and we will look at some of these briefly.
The variables in the environment are not significantly different from the shell parameters we have seen throughout this Bash Tips series. The only difference is that they are marked for export to commands and sub-shells. You will often see variables (or parameters) in the environment referred to as environment variables. The Bash manual makes a distinction between ordinary parameters (variables) and environment variables, but many other sources are less precise about this in my experience.
The standard variables in the environment have upper-case names (HOME, SHELL, PWD, etc), but there is no reason why a variable you create should not be in lower or mixed case. In fact, the Bash manual suggests that you should avoid using all upper-case names so as not to clash with Bash’s variables.
Variables can be created and changed a number of ways.
export commanddeclare command with the -x optionmyvar=42, just as for a normal variableexport command can also be used to turn off the export marker on a variableunset command (as seen earlier in the series)We will look at all of these features in more detail later in the episode.
I have provided detailed notes as usual for this episode, and these can be viewed here.
"Bash parameter manipulation""Some Bash tips""Some more Bash tips""Some further Bash tips""Some additional Bash tips""Some other Bash tips""Some supplementary Bash tips""More supplementary Bash tips""Some ancillary Bash tips - 9""More ancillary Bash tips - 10""Further ancillary Bash tips - 11""Additional ancillary Bash tips - 12""Extra ancillary Bash tips - 13""Bash Tips - 14 (Some auxiliary Bash tips)""Bash Tips - 15 (More auxiliary Bash tips)""Bash Tips - 16 (Further auxiliary Bash tips)""Bash Tips - 17 (Additional auxiliary Bash tips)""Bash Tips - 18 (Extra auxiliary Bash tips)""Bash Tips - 19 (Supplemental auxiliary Bash tips)""Bash Tips - 20 (Some collateral Bash tips)"
Hosted by Ken Fallon on 2020-02-18 is flagged as Explicit and released under a CC-BY-SA license.
Tags: fosdem, wikipediapodden, swedish, sweden.
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Jan Ainali from the http://wikipediapodden.se/ podcast came over to the http://freeculturepodcasts.org/ booth at FOSDEM 2020.
They do a Swedish Language Podcast about wikipedia et al, and of course we added them to the http://freeculturepodcasts.org/ site. While their main shows are in Swedish, they also have summaries that they do in English which can be found at http://wikipediapodden.se/tag/english/, (RSS Feed).
Help me help you! I rant about linux and Video drivers etc …
Get Video and CPU Info
chrome://gpu
# gives you info about video GPU in chrome!
chrome://gpuphoronix-test-suite system-info
# neat little project to dump out all kinds of info
phoronix-test-suite system-info# get hard disk temperatures !
hddtemp /dev/sdb
/dev/sdb: WDC WD4003FZEX-00Z4SA0: 37°C
hddtemp /dev/sdc
/dev/sdc: WDC WD4003FZEX-00Z4SA0: 36°Cvainfo - display information from VA API driver
lspci specific device
lspci -v -s 00:02.0
00:02.0 VGA compatible controller: Intel Corporation UHD Graphics 630 (Desktop) (prog-if 00 [VGA controller])
Subsystem: ASRock Incorporation Device 3e92
Flags: bus master, fast devsel, latency 0, IRQ 126
Memory at a0000000 (64-bit, non-prefetchable) [size=16M]
Memory at 90000000 (64-bit, prefetchable) [size=256M]
I/O ports at 4000 [size=64]
[virtual] Expansion ROM at 000c0000 [disabled] [size=128K]
Capabilities: [40] Vendor Specific Information: Len=0c <?>
Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00
Capabilities: [ac] MSI: Enable+ Count=1/1 Maskable- 64bit-
Capabilities: [d0] Power Management version 2
Capabilities: [100] Process Address Space ID (PASID)
Capabilities: [200] Address Translation Service (ATS)
Capabilities: [300] Page Request Interface (PRI)
Kernel driver in use: i915
Kernel modules: i915
lshw
# lshw is a small tool to extract detailed information on the hardware configuration of the machine
lshw -c video
*-display
description: VGA compatible controller
product: UHD Graphics 630 (Desktop)
vendor: Intel Corporation
physical id: 2
bus info: pci@0000:00:02.0
version: 00
width: 64 bits
clock: 33MHz
capabilities: pciexpress msi pm vga_controller bus_master cap_list rom
configuration: driver=i915 latency=0
resources: irq:126 memory:a0000000-a0ffffff memory:90000000-9fffffff ioport:4000(size=64) memory:c0000-dffffglxinfo
The glxinfo program shows information about the OpenGL and GLX implementations running on a given X display.
glxinfo | egrep -i 'device|memory|OpenGL|direct'dmesg
dmesg | grep -e IOMMU -e DMAR
dmesg | grep -E 'drm|radeon' | grep -iE 'firmware|microcode'
dmesg | grep -i -e i915 -e drm -e vgadmidecode - DMI table decoder
dmidecode -t baseboard | grep -i 'Product'GPU usage
apt-get install intel-gpu-tools | intel_gpu_topGoogle Dorks
FOSDEM is the biggest Free and Open Source conference in the world and on its 20th anniversary I decided to attend for the first time. By a good turn of fate, and some well-judged pitching, Ken Fallon secured a stand for the Free Culture Podcasts project which is an umbrella group that covers HPR, many of the shows on The Other Side Network and many more excellent podcasts that are released under creative commons licenses.
This audio is recorded in snippets in between manning the stand and gives some off-the-cuff observations from a FOSDEM noob. I was surprised to find that relatively few visitors to our stand had heard of HPR, which we quickly rectified of course, and I give a brief summary of the feedback we received. Also mentioned in this show, but not actually appearing, are my co-conspirators at FOSDEM, Ken, Beni, JWP as well as Dave Morriss who unfortunately wasn't able to join us in person but was very much there in spirit.
Linux Inlaws - a podcast about on topics around free and open source software, any associated contraband, communism / the revolution in general and whatever else fancies your tickle.
Please note that this and other episodes may contain strong language, offensive humor and other certainly not politically correct language - you have been warned (our parents insisted on this disclaimer - happy mum?). Thus the content is not suitable for consumption in the workplace (especially when played back on a speaker in an open plan office or similar environments), any minors under the age of 35 or any pets including fluffy little killer bunnies, your trusty guide dog (unless on speed) and cute t-rexes or other associated dinosaurs.
In this show the lads introduce themselves and discuss the technology they use and why they are putting on the show.
01:40 - 07:20 EST (09:40 - 12:20 UTC)
Hosted by Paul Quirk on 2020-02-11 is flagged as Clean and released under a CC-BY-SA license.
Tags: Photography,101,digital,film,camera.
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https://rmccurdy.com/.scripts/downloaded/www.nicoclub.com/FSM/Q40/2015%20Q40/
Updated: Solved: The audio could use a dac or something nice but this will do. Not (DO NOT PLUG IN THE HARNESS WRONG ORDER OR YOU WILL BLOW AT LEAST 4 FUSES ) I had to swap out 3 in the passenger side and 1 for the rear lights on the IPDM E/R next to the battery in a #@$% spot.
pulled the pins and soldered a audio jack to them and fed it though the AC vent :
pin 1 - G : Satellite radio sound signal LH pin 2 + R : Satellite radio sound signal LH pin 3 - w : Satellite radio sound signal RH pin 4 + b : Satellite radio sound signal RH
NOT SOLVED 08/21/2019 : So I'm sick of this jank setup .. the software is wonky and works about 1/2 the time .. I have to ƒ@#$ with it for about 5-10 min every time I want to use it … WIRELINQ is crap.. and I don't want the 600$ BT mod .. I just want AUX in !! I dont care if CD or SAT is spliced!
maybe I can hack it myself the issue is that the SAT is in the @^ing trunk .. so I would have to find the wires that go to the trunk. I use a long speaker wire with alligator clips on it and a continuity tester (volt meter ) to hunt for it …
Part No
2591a 1ma5e
Model No
cv-vn01e04d
"11 12 Infiniti G25 G37 Radio CD Player 2591A-1MA5E Bulk 711"
SOLVED 01/20/2018 : YAY ! this works and I dont have to have grap BT audio
Hosted by Ahuka on 2020-02-07 is flagged as Clean and released under a CC-BY-SA license.
Tags: social media, alternative, Fediverse, ActivityPub.
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Series: Social Media | Comments (0)
The ActivityPub Conference of 2019 was held in Prague. This is about a talk raising a suggestion that ActivityPub might be a way to implement Web 3.0. https://www.zwilnik.com/?page_id=1081
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