Topics

1

Construction / help on a 1500$ rgb laser proector

« on: January 04, 2011, 05:33:33 am »

well i have gained fundings for 1000$ to build a laser projector.
all following is about building a projector in denmark which means shipping is a big issue!.

first of you might call it impossible but heres the catch
it doesnt have to work straight away with more than green.
only green laser have to be ok the rest lasers can be bad.
i have checket out that galvos for 30k are about 400$ incl shipping.
i want 30k galvos course of future rgb plans.

well  my questions is once and for all:

• is this all i need:
  3 dr lava laser modulators.
  green,blue,red lasers.
  soundcard with mod and external connection board
  galvos
  optics.
• can anybody supply a direct link to a 7.1 sound card shipped to europe. i simply cant figure out which are compatible.
• help on a kit to make the sound card to a laser compatible one
• where to get cheap dichros and optics. im going for a setup with green laser pointing directly and other two lasers from the side.
• if anybody have second hand or new equipment for sale that can cover the above lease make contact! - johannesgj at the wicked gmail.com

kind regards johannes (really kicking it now with fundings!!!)

2

Construction / green projector build

« on: November 05, 2010, 11:48:02 am »

this will be my log of a newly started laser projector build.
i have bought the correction amp from
http://hacylon.case.edu/ebay/laser_diode/FlexModP3.php
and from him as well i got the modulators for three lasers (in the future i want to extend this projector to include red and blue.


so i now have
correction amp
2x modulators


i miss
usb 7.1 soundcard
galvos - am thinking about scanpro 30 but i cant find any place in europe they sell them for a reasonable price.
blanker
box
green laser - dont know where to get that i guess. :-( but this is probably the place to find the needed info

3

Construction / the long list of worthy galvos

« on: November 05, 2010, 02:21:26 am »

hi all!


i want to find out what shops exist carying what kind of galvos in the world categorised in:


USA:


EUROPE:


ASIA:


especially im interested in shops in europe as there is nearly none info on the different forums about galvos in europe. so i guess this could be a try to gather this info.


hope to hear from you guys with the spectre of knowledge of eternal laser modulation 

4

LaserBoy !!! / possible to make a short/full length film in vectors?

« on: February 10, 2010, 08:58:37 am »

i am teaming up with a photographer to make a short film, just a hobby project. and i thought about if anyone have ever tried to accomplish some sort of "real" cinematic approach to the vector fields of laser "cinema"
what i mean is to short the movie in normal ways but with focus on simple environments and strong shadow/light conditions.
this will then be treated in maybe a photoshop action script that detects edges and then everything is vectorized in a raster graphics to vector program.

final result is a short movie in vector graphics thereby moving from having the focus on the form of laser projecting to the content of laser projecting.

dont know if this is done before but i find the laser vectors really beautifull and the combination of an 8dac with two channels reserved for sound just feels like an interesting medium for short movie diy filmmaking people i think.

maybe we could in the end coordinate a short film laser vector festival hehe

well just ideas. whats your thoughts? :-)

and another thing, a firm owning a big creative neighbourghood in copenhagen is looking for ways to promote themselves with logos etc. there is a huge silo so i thought of making a green laser projector and letting it shine every night with their logo maybe.
and my question is:
is it safe for the projector to let it run for like 8 hours in a row or is their some complications i dont know of?

-johannes

5

Construction / using hdd galvos for lofi laser projector - possible?

« on: February 05, 2010, 02:55:06 pm »

hello guys i couldnt raise fundings for my big laser project i had written a lot about before so here goes a smaller project :-)

i am thinking of using two hdd galvos for making a lofi laser projector.
the drive for this project is that the projector would be very cheap thereby hosting workshops where people could build their own could be an opportunity.

well heres the lineup:
two hdd galvos to control xy cordinates
some sort of ac to dc converter or something to make the output of the computers audio card (two channels is enough cause the projector is gonna be monochrome)
cheapass laser maybe from dvd writer (it will only point towards the roof and not human eyes :-)

well any thoughts?
this guy made the roughly same setup though using a propeller to drive it and got ILDA 4k
http://micah.navi.cx/2008/07/hard-disk-laser-scanner-at-ilda-4k/

6

Construction / guidance for beginner

« on: November 03, 2009, 12:14:15 pm »

hello
we are a local electronics group trying to get into laser projecting. we understand the outer parts and the results, plus the way the images are packed and so forth.
i am studying electro engineering so basics of that should be ok to.
what we dont get is where to start.

can anyone help us with some guidance here ?
maybe some special topics on the motors/electronics/etc that is being used so we can get into the initial phase.
we have a sponsor in the form of our local youthhouse.

any help to get us started is greatly appreciated!

ps. if we start building a monochrome is it then hard to after that mod it into an rgb?
kind regards johannes gårdsted jørgensen