My new half watt projector

OH forgot to mention - I've soldered up the flexmod, and now am looking for a small 2A power supply around the house (the open frame one would be fine except I am not that comfortable being around exposed mains connections).

MAN these flexmods are small. I am thinking of replacing all the drivers on my laser show with these. All depends if my replacement lasers are TEC cooled. Most of the LSP ones are, but even so this one can either go into the projector, or run a standalone 445 project like its original purpose.

Electrofreak: The laser was plugged into my 2kva sinewave ups, the same model that runs my laptop and desktop. if there was a powerfailure (and I was playing lasers), the only indication of such would be if I had a fogger and suddenly the fogger stopped "fogging". The ups is quite hefty, as it has a very large battery in there (I got it cheap with a stuffed battery, and replaced the battery)

The thing will run my PC for around 4 hours.

We've used it to run a pair of 100 watt ham radio for 24 hours when our genny ran out of petrol. (15% duty cycle - 15%talking, 85% listening) at full power, along with some fluoro lights and a netbook. The netbook only started consuming when windows reported its battery was low.

vk2fro said:

This explains the two extra dots on the wall - does this mean my dichro's arent all that crash hot? It appears a lot of green is being reflected from the pass green, reflect red, and pass yellow/reflect blue dichro

Click to expand...

Its fairly normal for dichro's to reflect up to a few percent of light into the wrong direction. Normally you dont notice because it never exits the enclosure, but the dots on the wall will appear pretty bright: They are stationary on a small surface, whereas the scanned image covers a larger area.

You could measure it if you want to by not scanning anything, but with the green laser turned on. Just measure the main and stray beams to get an idea of how much is lost.

ok - I'll try this when I recieve the replacement projector from the ebay seller, and the DAC from Experimentonomen.

Probably also help if I buy an LPM

edit: well thats nice - the seller has offered to allow me to repair the laser by dropping in a new driver board and diode. They are sending out the new diode and board today. That diode will never make it into the laser I'll be dropping in my 445. Theres enough room in here for a nice sized heatsink to mount 3 flexmods to, so all the drivers will eventually be replaced with those, giving the set analogue modulation.

I just isolated the connections to the defunct violet laser, and fired her up. works fine. Looks like it was just a friday for the chinese (one of the leads going to the 405 was not soldered properly.

Now..... I need to order a diode off dave, and replace the silly driver board they replace, with a flexmod, and um, have a real laser show

Why? coz I'm not comfortable pressing a diode back out of an aixiz module, so I'll just drop in a diode with a flexmod. Pretty easy. Now. I'll be doing the same with red and green. and soon she'll be a 1.5-2 watt laser projector

I have the worlds biggest grin on my face, the shorted diode didnt feed back current through the wiring into the galvo amps, nor the dmx board!

Sorry pal, I dont want milliwatts, I want WATTS

Thats some good service they are giving you

While you're at it, some inside pics would be good

Cheers,
Dan

Sure Dan - I'll shoot some when I drop the new laser in.

That tranny and cap are still here for you by the way. Have you got your argon working?

So ur gonna have 2 projectors now ? If so you have one u use, and the other for spare parts

No, the seller is sending over the replacement driver and diode. The rest of the projector works fine.

It was built early on a friday and somebody was not paying attention when they soldered the bluray diode

edit: I told them I am confident in replacing the parts, explaining what needed to be done, and they were happy to continue the warranty and allow me to effect the repairs.

Some pictures of the guts please

When I get the new parts next week I will shoot some pictures.

I forgot I already had a shot of the innards, just hadn't uploaded it to flickr...



Theres not much to see out of frame except half the scanners amp and its power supply, and the ILDA board. The two cylindar lasers are powered by one board, and the green by another .

I will be replacing the lasers and the control boards with flexmods later on.

Notice the adjustable mount for the scanners. This is going to make it a piece of cake to drop in a 30K set

How did you manage to align those dichro's?

they came aligned? maybe.
By the looks of it the horizontal plane is right it would just be turning the optics till they were just right tightening screws then slowly bumping it with a tap hammer till they were at right angle then tighten some more.

Hmmm, Yes enjoyed the unveiling of those parts. Keep up the good work!

Benm said:

How did you manage to align those dichro's?

Click to expand...

They came aligned yes. Pity they arent great quality. I'll be replacing them soon. a lot of beam gets wasted from the red and green lasers. I'm sure improving the scanners and dichros will have a big impact on brightness with this laser show.

Here is what I have picked for replacement lasers:

Lasershow Parts - LW640-350, 350mw 640nm laser


400 mw 640nm (x 2 eventually with pbs cube)

Lasershow Parts - LW Series OEM 532nm DPSS Laser: 400mw

400mw green

and of course I'll be home building a labby style for the blue laser (445nm) at around 800 mw.

Then I will add some of these

Lasershow Parts - 3-Axis Fine Adjustable Optics Mount with 25mm Window

with some dichros

and once I have all these parts together I'll go.... "why waste it on the cheap china projector, lets build my own", and chuck in a set of these:

Lasershow Parts - SCANPRO Series 40Kpps Galvonometer System


This setup should get me a nice 2 watt projector

Dave (from LSP) if you dont want me hotlinking your images, let me know if I can copy them to my flickr and use my bandwidth