Need some help! My first RGB projector project (expecting approx. 2W system)

**taggalucci** · 04-01-2010, 16:35

Here's a short video...

I am working on it in a spare room perfect for this sort of thing. So no, my lounge doesn't look like that

As you can see from the first clip, the unwanted transmission (and reflection) through the laser-wave dichros looks high. I'm still keen to have measurements taken to establish the loss. I have tried a number of different angles and flipping the filters over 180 degrees without any noticeable improvement. In the second clip, I have masked these two extra beams.

I'm otherwise happy with these initial results and looking forward to completing the construction in the next week or so in preparation for it's first night out April 17th!

**buffo** · 04-03-2010, 05:14

Wow! It's coming together rather quickly now... Already got it scanning I see. Very nice.

Keep up the good work!

Adam

**Insanity** · 04-09-2010, 06:30

I really like this AC distribution:

Click image for larger version.

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Is it something you made or did you buy it? I would be very interested in getting hold of one...

Mark

**LEDpaint** · 04-09-2010, 07:38

Mark,

Check out McCarrot's post here for the board he is designing:

http://www.photonlexicon.com/forums/...102#post142102

**Doc** · 04-09-2010, 09:43

Yes, McCarrot's board sounds like the ultimate laser builder's must have: Interlock circuit, AC distrubtion and switching, ILDA buffer and connector and all on one board, bring it on

After spending every night this week scheming out and soldering up 2 interlock and AC distro boards I would gladly pay for some next time, my eyes aint what they used to be and I still need to build some buffers for my Laserwave modules

**taggalucci** · 04-09-2010, 21:47

Originally Posted by Insanity

Is it something you made or did you buy it? I would be very interested in getting hold of one...

Mark

Hi Mark,

Yeah, this was something I made from various components bought at a local electronics store (equivalent to Maplin).

This provides somewhere to wire each separate AC-requiring component (without sharing terminals) and somewhere to mount the fuse (for easy access). I later added a switch to isolate the scanner amps for when I'm maintaining or aligning and don't need them powered.

It's not that tidy, but very robust. Glad you like it

**taggalucci** · 04-09-2010, 21:53

Originally Posted by dave

They were the new laser-wave dichros, so the losses should be minimal.

Maybe I can drop past sometime to meter your lasers and check the losses of your dichros with the fieldmaxII or gentec meters we have here..?

Thanks to Dave and Adrian for popping round this arvo with their power meters.

I believe the loss off the first dichro was about 110mW of red, so from a 900mW laser that was quite significant. Dave's taking this up with Laser-Wave and I look forward to hearing more.

Thanks again guys, and good to meet you both

**taggalucci** · 04-18-2010, 07:24

Hi all,

Here's some pictures of the housing a friend of mine had milled from drawings I supplied...

5 of the plates attached to the chassis frame, with lots of apertures for fans and vents...