Go Down

Topic: is my art project feasible? (Read 9118 times) previous topic - next topic

jeanneM

ps this is what got me thinking about cellphones.

http://hackaday.com/2010/10/19/using-a-cellphone-lcd-as-auxiliary-linux-display/

macegr

The easiest way to get a bunch of videos on a surface is to use a projector. You could then just worry about adding speakers inside the surface.
Unique RGB LED Modules and Arduino shields: http://www.macetech.com/store

jeanneM

#17
Jan 15, 2011, 01:52 am Last Edit: Jan 15, 2011, 06:18 am by jeanneM Reason: 1
i'm sorry, i'm not sure what projector refers to.  

you mean a media projector like for showing on big screens?  when i said i needed the videos to run the same movies, i didn't meant to run them synchronized, but all mixed up.  sorry for the confusion.

marklar

When I first read the projector idea in the previous post I was thinking that you could create a program that runs multiple videos. This is a pretty easy application to write. In windows, just embed some media player controls into a form and size / move them around till you like them.  Not sure how well 30 or 50 would run .. maybe kinda choppy if at all.  So if that is the case, one work around would be to create a single video that is "the quilt" that has all the sub videos running.  Then it could take as long as needed to generate the output, but when running it would be just a single smooth video.

The nice part of this idea is you can test the concept to see how it looks before you do a physical build or even buying a projector .. just see how it looks on screen.  If you can borrow a projector, you can proof of concept the idea at the next level, again with little to no investment.  

You can also resize the videos to be all the same or different sizes to see what you like better without having to actually buy equipment.  

If you like the results, then it would be very easy to control it real time from your PC in your completed project.  

One potential issue I see is the space needed.  So regardless of it being back or forward projected, you still need space from the projector to the target screen(s). If you can work through that limitation and make it something you can "fold up", the projector idea may be very cost effective and compact to carry (specially with mini projectors getting better).  This method could also provide the most flexibility in that you can change your screen layout on the screen and the configuration of the quilt .. or other surfaces / shapes.

Another potential issue is pixel size.  Projectors are usually for standing back and looking at.  So attempting to create a bunch if tiny screens may result in what is commonly known in the business as "crappy videos".

If this idea seems viable to you then you could write the application, build the armature to hold the quilt and then shine the videos onto your quilt.  Outline the video boxes and then sew on little white screens that could have fancy borders to add artistic effect, etc. Maybe even make some of them have effects like when your in a fun house.

Even if the projector idea does not pan out, you may still want to consider the PC simulation to play with ideas.



jeanneM

if i understand you about the projector, i could design a bunch of windows in specific spots, and run videos in them, once everything was aligned.

this wouldn't work when the fabric was draped around a form, tho, except maybe it would if the form was exactly placed.  hmmm.  you've got something there.

what about speakers?  could i direct sound to individual speakers or will it just play all at once from a central source?

maybe not 50.  maybe not 30.  i've got a length of 25 feet by 5 high, so a dozen and a half might be enough.

would a projector work with that kind of aspect ratio (1:3.75)?

marklar

Quote
what about speakers?  could i direct sound to individual speakers or will it just play all at once from a central source?

One central source.


Quote
maybe not 50.  maybe not 30.  i've got a length of 25 feet by 5 high, so a dozen and a half might be enough.

would a projector work with that kind of aspect ratio (1:3.75)?


That is a pretty large size and quite an aspect ratio.  You may end up needing 3 16:9 projectors.  If that is the case, the sound of each section would be sent to the related third of the display if each one was run by a cheap computer.  You could even make one of the videos in each section large with smaller videos around it.  The sound could be louder on the larger video and they could rotate in.  It would give the effect of everyone talking together but as though you were in "conversation" with only one.  Having three sections allows for three people to have such an experience at the same time.  

Using that same layout idea, you could use a larger monitor for each section with smaller 7" or so monitors around it.  Some could be connected to a computer while others to CD output.  The same CD output may be able to be split and run into each section, removing the need for some of what may take many devices.  This would remove the projection space needs making for a flatter display.  Not sure how this would effect cost.  Making the videos cycle in and out may be tricky, but may be just a matter of making synced videos that change offset to make it appear they are cycling via a central source.

Not saying this is the right direction for the project, just more thinking out loud.  You most likely will end up with something very different than this in the end :).





cinnamon

did you consider the i/o ports required ? the number would grow enormous ! even leds can't be interfaced without port extender let alone lcds. please look into it before starting.

jeanneM

Quote
Not saying this is the right direction for the project, just more thinking out loud.  You most likely will end up with something very different than this in the end Smiley.


this is how it always works.  the thinking aloud part is the most fruitful, because even tho 99.94% of the ideas are dead ends, the fraction that are good are great.

i am not going to be too attached to whether the videos can be embedded in the quilt (so called, and for all intents and purposes rightly so).  they may end up being shown on a tv in the corner.  but that's too old fashioned, and i'm trying to avoid it.  

part of the intent of this project is to teach repurposing to a receptive and resourceful group of people, as an idea that has commercial applications.  so i'm trying to make something neat with nothing in ways anybody can learn.  

back to the idea of a million mp4 players.  some of them have external speakers.  i could slip them into special pouches in the fabric, and loop the same playlist on all of them, staggered, and wait for the batteries to run out.

or, i could make a million youtube channels.  no, that would take internet access at the site, which i'm not assured of, and i'm not willing to do the installation at an internet cafe...

a million mp4 players sounds more like it (i mean 18 or fewer).  can you use arduino to power them so you can plug it into an outlet?


jeanneM

#23
Jan 16, 2011, 07:00 pm Last Edit: Jan 16, 2011, 07:01 pm by jeanneM Reason: 1
Quote
Using that same layout idea, you could use a larger monitor for each section with smaller 7" or so monitors around it.  Some could be connected to a computer while others to CD output.  The same CD output may be able to be split and run into each section, removing the need for some of what may take many devices.  This would remove the projection space needs making for a flatter display.


on second read, i really like this idea, including the implied conversation between videos.  

a large screen surrounded by smaller screens.  and you say you can connect the large screen to a computer, and the smaller screens via a cd output cord?  

could i do it all with splitters and never mind projection?

marklar

Quote
a large screen surrounded by smaller screens.  and you say you can connect the large screen to a computer, and the smaller screens via a cd output cord?  

Flat monitors and box CPUs are very low cost.  In fact, the computers needed to play a video could be obtained for free in many cases (i.e. windows98 machines with no other use).  Use standard cd players to connect to smaller monitors with standard video in (i.e. the yellow cable with RCA connection).

Quote
could i do it all with splitters and never mind projection?

Yes, connect the CD player output to a splitter and send each output to a screen in each section.  So if you had 7 players, you could run 21 screen in three sections plus the 3 run by computers.  If you have larger flat screens with video input, you may be able to run with just 8 cd players and no computers.



jeanneM

#25
Jan 17, 2011, 03:03 am Last Edit: Jan 17, 2011, 03:39 am by jeanneM Reason: 1
wow.  regular old fashioned cd players.  i can find millions of those for nothing.  

how come using a larger screen means i can do without a computer?

any idea how the audio works with this setup?  the other colored cable, right, and some scavenged tiny speaker?

and what about using portable dvd players?

marklar

Portable DVD players with the built in screen was my first thought, but most of those are "fold out" and would look bad in such a project.

The yellow is the video, the red and white are left/right sound.  Most small monitors have video and sound input and most good larger monitors do as well.

jeanneM

if the dvd screens can be folded flat, then i can hide the rest of it.  it gets bulky tho.  

i'm looking on sparcfun and sites like that for prices, and it doesn't look like monitors are very cheap.

scavenging them would be best, but unless there's an 'easy' way, then i'm going to be stuck with proprietary products.  because i'm not a tech, and neither are the people i will be working with - they're just economical and  expect to have to tear something down to be able to use it.  

any ideas?  

marklar

You can generally find inexpensive monitors on craigslist, thinking around the 17" size for around $50 each. Larger will naturally start costing more.  The nice thing about monitors is .. they are easy to reuse after the project display is over.  So unless this is a permanent install, you can loan monitors to the project.

As for smaller monitors - I was thinking about something like these.

http://cgi.ebay.com/4-3-TFT-LCD-Car-Reverse-RearView-Color-Monitor-CZ7-/170537635936?pt=LH_DefaultDomain_0&hash=item27b4d5d060#ht_5577wt_1139
http://cgi.ebay.com/7-TFT-LCD-Color-Screen-Car-Monitor-rearview-camera-VCR-/230503864038?pt=LH_DefaultDomain_0&hash=item35ab19d6e6

or in the USA
http://cgi.ebay.com/7-TFT-LCD-Headrest-Monitor-/170590726834?pt=LH_DefaultDomain_0&hash=item27b7ffeab2#ht_2334wt_905

If you need multiple, you could most likely work out a deal.  Also note when ordering from china .. be ready to wait a long time in most cases (i.e. two to three weeks can be normal).

There are also quite a few low cost DVD players out there in e-bay land and maybe your local pawn shops.

As for scavenging them, my opinion is you will spend more time trying to get videos playing on odd parts pulled from machines then you would want to spend.

jeanneM

#29
Jan 18, 2011, 12:05 am Last Edit: Jan 18, 2011, 12:06 am by jeanneM Reason: 1
okay.  car seat monitors looks good.  i can get 3.5" to 7" monitors for  $20-$50.  what if i have ten monitors of various sizes, to start with.  what's my next step?

i found a dvd player on ebay, multi region, so it will play no matter where i end up going.  i'm not sure what all the cable colors mean, but there's red, white, blue, yellow, green, and amber connections on the back.

if i wanted to run different sections of the same movie to all ten monitors (effectively starting the same movie in ten different spots), how would i do that with one player and ten monitors?  

or would i need a computer for that?  and if so, how would i do it with a computer?

i love the sound of pawn shops, by the way.  thanks for reminding me.  there's also freecycle. org.

Go Up