- Apr 2, 2009
Hello lumia lovers,
I just started building my own lumia projector and have a few open questions. I actually opened a new thread (http://laserpointerforums.com/f51/rgb-lumia-safety-94465.html) because I forgot this great one existed. I am using a cheap RGB module (532nm(30mW), 638nm(100mW), 445nm(100mW)) from china... and I am wondering what kind of protective glasses you guys use when you work with your rgb modules?
after fiddling with single modules or gas lasers I now actually like these small rgbs --and I am getting another when AixiZ restocks as I cant bear to remove mine from my new PJs - if you plan invance you can build a bunch of ez projects with one rgb to move from one to another --spirolumiatunnelefxspeakerbouncysteppermotorandglavosscanners- to name some
I assume your both use 12vdc- while waiting on a proper power supply ebaychina I did some short testing with a common but good quality adjustable ac-dc in USA we call then 'wall warts' anyway here is what happened- no harm- when on lowest wart setting ~3V the red begins to lase- move to 4.5 vdc bright red and a bit of green (& yellow now) go higher -more green some blue- 9 vdc all 3 ` & at 12 vdc all 3 and quite bright- at aixiZ these are 135$ techhoodlaserlands may have cheaper but- underspect or wrong red hmmm- shoulda got the AixiZ
and about that demo --yeah it was neato- and jon had a 4 W laser so the daylight (for him) was n/p- BUT IC... just how could you make a PJ with a ball of jelly lens- messy? -
OK did you see the part 2 of the LUMIA SELEM demo?
ddint think so
coz it was just me- with my puny 350mW rgb BUt I had a BETTER glass and better image and not such a hard thing to use in a practcle way- melting ice lens is nice - but a mess to laser thru
I should have opened the seminar and jon could have went after-
I concede that he was the 'headliner' I did not need a lot of time but a dark area would have helped
butthurt ? yep- :yabbem:
once i post the video all will want to know 'howdydodat'
and YEAH the aligment cannot possibly be kept= no 'real' dicro mounts so... expect that
I actually moved
mine a tiny bit apart but even aligned to a single dot all the glass I use diffracts the colors into way more than I expected- for small glass 1/3rd rpms is not too fast- for large round lumis glass the surface moves much faster so i need to gear down or get 25$ 5 or 6 RPH motors (thats HOURS)
I dont use goggles all that much- I know the danger of the reflections and mask off most of that in this 'proof of concept' projector- but any project like this -- with an open 'enclosure' is a danger but so is a beam rail projector it too has no real enclosure..imo BUt I suggest you all wear them at all times-
And I am wondering if it is possibe to use TTL modulation to change the colour composition of the projection. Should be no problem if one doesn't use a scanner right?
-- with ttl you get seven colors or combo * if you count the black laser color
its all on or all off for each color= r- b -g rg gb rb and white
I will try to record any progress I make and post some pics or videos here. Thanks fot this wonderful thread it is really helpful! :thanks:
oh Yes you can use the TTL that is on most of these- giving you more than my' low tech' power as i cannot get blue alone or GB or RB with it alone- If I added TTL I could also do that-
I have read that wallwarts are not to be trusted and believe that and I thought I may do harm with this one 350mW- but as it was given to test- and use for a review I am still using the wallwart average of 1 to 2 hours ( for 3 weeks or so)each night I can adjust to make the image high on the wall and all over my ceiling- mine has an extremely wide angle >100 degrees--I kick back and watch the ceiling morph in Laser p0rn!!
I just bought the same thing for lumia, they sent the wrong one and alignment was terrible. (They sent 650nm module instead of 638, however it is 500mw instead of 200)
BUT, what I had in mind was the same as demoed last year at SELEM. It was an RGB with a lens to spread the beams slightly and then going through a Polymer water ball. Absolutely gorgeous.
Be careful without goggles on lumia. I'm sure hakzaw will chime in (pun) but lumias can go almost instantly from a speckled and scattered beam, to a focused spot depending on the glass it is going through. So watch out where it is pointed if you start using higher powers.
-- One good habit for laser safety is to power the lasers as low as possible for all 'other things' until the 'show' and even then you are not supposed to use a brightness more powerful than
needed for the desired effect- all bounce mirror placement lasers aimed at mirror balls etc are set up and tested many times but all at the lowest power possible- Horizontal (ish) beams are the worst IF they happen to hit that VERY VERY tiny spot in the center of your eyes lens- JUST like the sun with a magnifying glass- you cannot blink fast enough to avoid damage even with a 5 mW cat toy if its a worst-case eye hit