[Swansea Hackspace] Hackspace Digest, Vol 25, Issue 7

Tue Jan 6 01:27:05 GMT 2015

A Raspberry Pi per screen and a client server model is the option I am
perusing on a current project.

Ask me in a month how it is going git should be live by then)

On Monday, 5 January 2015, Debi Withers <debiwithers at yahoo.co.uk> wrote:

> in answer to the question of how the video needs to be displayed, there is
> no manipulation it just needs to be selected and played back, possibly
> paused or rewound.
>
> Video will only be one of the channels, the other 3 will be jpeg or pdf; 4
> audio (mp3s I expect)
>
> would this still make the raspberry pi the best option?
>
> thanks again everyone for this amazing input and ideas,
>
> debi
>
> www.debi-rah.net
>
> Publishing - http://www.hammeronpress.net
> Create-Ahh - http://create-ahh.org.uk
> Public History - http://feministarchivesouth.org.uk
> Great Bear Analogue & Digital Media Tape Blog-
> http://www.thegreatbear.net/blog/
> https://twitter.com/deborahmwithers
>
>
>   On Monday, 5 January 2015, 9:24, "
> hackspace-request at swansea.hackspace.org.uk
> <javascript:_e(%7B%7D,'cvml','hackspace-request at swansea.hackspace.org.uk');>"
> <hackspace-request at swansea.hackspace.org.uk
> <javascript:_e(%7B%7D,'cvml','hackspace-request at swansea.hackspace.org.uk');>>
> wrote:
>
>
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> Today's Topics:
>
>   1. Tap (Ceri Clatworthy)
>   2. Re: New Member and project Question (jon lilley)
>   3. Re: New Member and project Question (Debi Withers)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Mon, 5 Jan 2015 16:39:35 +0000
> From: Ceri Clatworthy <ceri.clatworthy at gmail.com>
> To: Hackers <hackspace at swansea.hackspace.org.uk>,    Justin Mitchell
>     <justin at discordia.org.uk>
> Subject: [Swansea Hackspace] Tap
> Message-ID:
>     <CAO=DJn-x1Ed5C9+d0Nv3vr1aV9LR98iJTWonJz3-s6UUMvGbzw at mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> Do you still need to re tap the thread? ??
>
> Got work tools I could bring. .
> What size M8  ??
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> Message: 2
> Date: Mon, 5 Jan 2015 16:41:56 +0000
> From: jon lilley <jon.j.lilley at gmail.com>
> To: Swansea Hackspace <hackspace at swansea.hackspace.org.uk>
> Subject: Re: [Swansea Hackspace] New Member and project Question
> Message-ID:
>     <CAHLFiFDh4z5Ph-D4noz7wYAMSV2388Ao7FMQR+XC3jCEOSWi6g at mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> Hope you don't mind my popping in my two penn'orth here. :)
> Depending on how the video & images need to be mixed and controlled, I'd be
> thinking of something like a Raspberry Pi to control each screen (with any
> needed video files duplicated on each machine) and have them controlled by
> the laptop and/or a "control surface" with the knobs & dials
> required...easy enough to do with Arduino and a bit of coding, I'd think?
>
> I think it really depends on how much processing you're going to need to do
> with the video.. The Pi is good at displaying, but a little underpowered
> for manipulation.
>
> Jon
> On 5 Jan 2015 16:28, "Ceri Clatworthy" <ceri.clatworthy at gmail.com> wrote:
>
> > If you could cope with a slideshow (cartoon like graphics)
> >
> > then 2344115
> > <
> http://uk.farnell.com/mikroelektronika/mikroe-1429/ft800-connect-eve-add-on-board/dp/2344115>
> from
> > Farnell,
> >
> > http://www.ftdichip.com/EVE.htm
> >
> > at ?53, each, not the cheapest solution, but amazingly modular.
> > Keeping your code over head very low.
> >
> > Also it can (if i remember correctly) play wav files, and do graphs
> charts
> > etc.
> >
> > additionally for ?26, there is VM800C43A-N
> > <
> http://uk.farnell.com/ftdi/vm800c43a-n/ft800-eve-module-fpc-ffc-40-lcd/dp/2355186
> >
> > ,
> > But you will need a PSP screen (or comparable)
> >
> > One of our other members has used an Ardweeno version, intended for
> > creating 80's style video game consoles.
> >
> > Ceri
> >
> > On Mon, Jan 5, 2015 at 3:36 PM, Ceri Clatworthy <
> ceri.clatworthy at gmail.com
> > > wrote:
> >
> >> What have you in mind for the screens,
> >> are you thinking of 4 PC like monitors,
> >>
> >> because, just driving 4 (additional) monitors from a laptop could be
> very
> >> expensive !!
> >>
> >> or something a little more basic, may be not as good as  a Nintendo DS /
> >> Sony PlayStation Portable screen
> >>
> >> perhaps 280*320 pixels (lots of flavors available from china)
> >>
> >>
> >> If you only need to faid the back-light up/down, - giving appearance of
> >> screen on/off,
> >> Then that is potentially VERY simple.
> >>
> >> As always,
> >> More Info,
> >> More Help :)
> >>
> >> Ceri
> >>
> >> On Thu, Jan 1, 2015 at 3:53 PM, Debi Withers <debiwithers at yahoo.co.uk>
> >> wrote:
> >>
> >>>
> >>> Hello there,
> >>>
> >>>
> >>>
> >>> I am a new member to this list and am considering joining the Swansea
> >>> Hackspace fir 6 months next year to realise a project.
> >>>
> >>> I am writing initially here to get some advice and some indication of
> >>> how difficult it would be.
> >>>
> >>> So here is the project:
> >>>
> >>> I want to make a 'transmission machine' which can simultaneously play
> >>> back up to 8 channels of digitised media - video, images and audio.
> >>>
> >>> Ideally the levels will be controlled by an external device, like a
> >>> mixing desk/ interface, because it is important that people using the
> >>> machine have the physical experience of controlling the levels - i.e.,
> how
> >>> loud the audio can played, the clarity of the image. The selections of
> the
> >>> digitised files will be made via a laptop.
> >>>
> >>> Attached to the 8 outputs will be four screens and 1-4 speakers -
> >>> although all the audio channels will probably be played through one
> speaker
> >>> - so comparable to a live mix which plays back multiple audio channels.
> >>>
> >>> The one complicated thing perhaps is ideally to separate the audio and
> >>> moving image of the video file so that the audio and image levels can
> be
> >>> controlled separately, i.e., turn down the sound but still play the
> image;
> >>> turn down the image, still hear the sound.
> >>>
> >>> I've asked a friend of mine who seems to think this would be possible
> >>> through Arduino, but I wanted to check in with a local hackspace for
> advice
> >>> to flesh out the idea.
> >>>
> >>> I've attached a diagram if this helps to explain the idea better.
> >>>
> >>> I live in Drefach Felindre but could travel to Swansea to work on the
> >>> circuit if people could help me. I don't quite have the technical
> expertise
> >>> to manage it myself!
> >>>
> >>> I see there is a workshop on 8 Jan but sadly I cannot make this date...
> >>>
> >>> Many many thanks in advance for your help -
> >>>
> >>> debi
> >>>
> >>>
> >>> _______________________________________________
> >>> Hackspace mailing list
> >>> Hackspace at swansea.hackspace.org.uk
> >>> http://swansea.hackspace.org.uk/mailman/listinfo/hackspace
> >>>
> >>>
> >>
> >
> > _______________________________________________
> > Hackspace mailing list
> > Hackspace at swansea.hackspace.org.uk
> > http://swansea.hackspace.org.uk/mailman/listinfo/hackspace
> >
> >
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> ------------------------------
>
> Message: 3
> Date: Mon, 5 Jan 2015 17:21:46 +0000 (UTC)
> From: Debi Withers <debiwithers at yahoo.co.uk>
> To: Emyr Morris <em at preseli.com>,    Swansea Hackspace
>     <hackspace at swansea.hackspace.org.uk>
> Subject: Re: [Swansea Hackspace] New Member and project Question
> Message-ID:
>     <
> 1333146619.4808762.1420478506238.JavaMail.yahoo at jws11134.mail.ir2.yahoo.com
> >
>
> Content-Type: text/plain; charset="utf-8"
>
> hi Emyr,?
> I've been conversing with Ceri (I think off list)...
> something I didn't make clear in previous email was this:?
> The channels being played back will comprise of
> 4 audio (most likely mp3s, because I want file sizes to be as small as
> possible)
> 3 image (so either pdfs OR JPEGS - which might need to be scrolled in
> order to read a document)
> 1 video (I say this because apparently the size of video files might pose
> a problem if I was to stream more than one video file from a laptop)
> I think this will make a difference to the set up as video files are
> big....
> SD video is also fine, it doesn't have to be great quality - the project
> is about transmission so the processes through which this occurs (the
> qualities/ mutations of the signal, etc), are an important part of the
> configuration.?
> When the image is clear, it is important that JPEGs, etc are not
> pixelated.?
> Once I figure out what equipment is required, enquiries at the BB list
> would be great...
> thank you all so much
> debi
> ?www.debi-rah.net
>
> Publishing -?http://www.hammeronpress.net?
> Create-Ahh - http://create-ahh.org.ukPublic History -?
> http://feministarchivesouth.org.uk
> Great Bear Analogue & Digital Media Tape Blog-?
> http://www.thegreatbear.net/blog/
> https://twitter.com/deborahmwithers
>
>     On Monday, 5 January 2015, 7:27, Emyr Morris <em at preseli.com> wrote:
>
>
> I very doubt you will manage that with an Arduino... there is a shield
> that will overlay graphics (rudimentary) over composite video.
>
> Composite video is pretty much a no-no these days, between their artefacts
> and very low res (575 lines ish)
>
> If you are working to a low budget then your best place to start would
> probably be an existing computer (needs to be decent) and spend your bucks
> on a very good graphics card that has 8 outputs (or two graphics cards with
> four (quad) outputs)
>
> This is how we put the score screens on podiums on TV quiz shows.
>
> You would then write code in something like Visual Basic that would then
> populate the screens
>
> I say 8 outputs as you will need one screen for control and then the other
> 4 display screens
>
> The audio out would come via your sound card / amps / speakers etc
>
> This way you will be able to use existing video libs to open your various
> AVI/MPEG files and send them to the correct destination.
>
> This then goes back to your computer - to play four different videos at
> the same time will require some pretty good hardware, while your graphics
> cards will do most of the donkey work the computer will have to be fairly
> decent with plenty of RAM to be able to cope with the data throughput. So
> fast processors and fast RAM and plenty of it.
>
> An ambitious project.
>
> On the other hand, depending on the quality required, there is a lot of
> non HD equipment now coming on the market as old SD studios and OB trucks
> are closing down.
>
> There is a lot of kit that can do this sort of thing available on BB List.
> I have to do the school run now so I don't have time to search for a
> suitable piece of kit for you right now. http://www.bblist.co.uk/
>
> I can make enquiries for you if you like.
> Emyr
>
>
>
>
> On 1 January 2015 at 15:53, Debi Withers <debiwithers at yahoo.co.uk> wrote:
>
>
> Hello there,
>
>
>
> I am a new member to this list and am considering joining the Swansea
> Hackspace fir 6 months next year to realise a project.
>
> I am writing initially here to get some advice and some indication of how
> difficult it would be.
>
> So here is the project:
>
> I want to make a 'transmission machine' which can simultaneously play back
> up to 8 channels of digitised media - video, images and audio.
>
> Ideally the levels will be controlled by an external device, like a mixing
> desk/ interface, because it is important that people using the machine have
> the physical experience of controlling the levels - i.e., how loud the
> audio can played, the clarity of the image. The selections of the digitised
> files will be made via a laptop.
>
> Attached to the 8 outputs will be four screens and 1-4 speakers - although
> all the audio channels will probably be played through one speaker - so
> comparable to a live mix which plays back multiple audio channels.
>
> The one complicated thing perhaps is ideally to separate the audio and
> moving image of the video file so that the audio and image levels can be
> controlled separately, i.e., turn down the sound but still play the image;
> turn down the image, still hear the sound.
>
> I've asked a friend of mine who seems to think this would be possible
> through Arduino, but I wanted to check in with a local hackspace for advice
> to flesh out the idea.??
> I've attached a diagram if this helps to explain the idea better.
>
> I live in Drefach Felindre but could travel to Swansea to work on the
> circuit if people could help me. I don't quite have the technical expertise
> to manage it myself!
>
> I see there is a workshop on 8 Jan but sadly I cannot make this date...
>
> Many many thanks in advance for your help -
>
> debi
>
>
> _______________________________________________
> Hackspace mailing list
> Hackspace at swansea.hackspace.org.uk
> http://swansea.hackspace.org.uk/mailman/listinfo/hackspace
>
>
>
>
>
> --
> Mob: 07836 267426
>
> This e-mail and any files transmitted with it are confidential and
> intended solely for the use of the individual or entity to whom they are
> addressed.
> ?
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>
> _______________________________________________
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> Hackspace at swansea.hackspace.org.uk
> http://swansea.hackspace.org.uk/mailman/listinfo/hackspace
>
>
> End of Hackspace Digest, Vol 25, Issue 7
> ****************************************
>
>
>

-- 
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