New diy RGB scanner

[dooiespons]

Hi,

Yesterday i tested my 20k galvos with a 80mw 532nm, and i was very happy with the result!
Played the riddle and some other shows, until my cat decided to jump on my test setup, killing my galvo mirrors
Lucky for me it still works, but the mirrors need to be replaced.

But then i thought, why not make a RGB projector instead of just a green one?
So i looked up ebay and saw this complete RGB module:
http://www.ebay.com.au/itm/RGB-1W-La...ht_1649wt_1163

Its 532nm(200mW)+660nm(500mW)+450nm(500mW), for just $375!
Does anyone on this board has experience with this product, or the seller?
It looks like a really good deal for a beginner projector to me.

[daction]

Make sure you get analog modulation.

[Steve Milani]

Make sure you get analog modulation.

I quote.

You have to be sure you get anolog modulation.
Prices for all analog modules you need (with the same output power) is much higher than $375...

[dooiespons]

I quote.

You have to be sure you get anolog modulation.
Prices for all analog modules you need (with the same output power) is much higher than $375...

Well, the advertisement says that it has analog modulation @ 30Khz.
I bought one, and if it doesn't have analog i can still send it back.
I'll hope for the best- it should arive within 18 days

[lazermaster]

dooiespons, let us know how you like the product when you get it and how well the TTL/Analog Mod works.

[colouredmirrorball]

I was eyeing that product as well a while ago. It looks like a good option for a satellite projector. Keep us updated!
FWIF, I bought a diode from that seller, and he was quick to answer my question about the PSU being included (it is).

[dooiespons]

Ok, so the module just arrived (really fast.. 5 days after he send it, including the weekend!).
The packaging was done really well- and the module is nice!
I made a few photo's, i will upload them later tonight with a small review

[dooiespons]

Pictures!
I resized them for the forum (originals where 2816x1880).
If you want to see one of the pictures in full size, ask me for a link

So here is the power supply.
By default it comes with a american plug (grounded).
I had to connect my own european power cord to it, no big deal


This is how the module was packed, lots of protection.


The complete module itself, looks good


As you can see, the blue module is scratched pretty serious.
No big deal for me, but its something to think about when you buy it.


The backview, with the driverboard for blue, and the fans on the laser modules (they are a bit noisy).
Fun fact: The driverboards are coated in red, green and blue


And this is how it looks like, powered on without ttl/analog, so all modules on full brightness.
There is just a little smoke in the room.
As you can see, the beams aren't perfectly lined up.. and it is leaking a bit of green.


Just like above, the beams aren't perfectly lined up.. this is only from a distance of ~30cm, so the difference is pretty huge.
So when you're buying one of these, keep in mind that you might have to re-allign the dichros.

(And yep i poked a hole through the remote, i didn't think of that since i was in a bit of a hurry )


I didn't test the ttl/analog input yet, since my soundcard dac was acting a bit weird.

My opinion about the RGB module:
It is cheap, and it looks like it is assembled from used modules.
The alignment is a bit crappy, at least it was for me.
To re-align the dichros, you first need to remove the glue around the screws, and that takes a bit of work.
When that is done the alignment is easy and straightforward, just don't forget to put a bit of glue on it once you're done.
After it is aligned, it is a pretty good module: cheap, all-in-one, power supply included (3x 12v), and it is (almost) ready to use.

Tonight im going to test the TTL and analog modulation, i'll post pictures of it when i got it running with my galvo set

[Datsurb]

I`m new to the forum, and the whole laser scene. I recently bought a crappy chineese RGB laser, (and yes, with ishow.) This did`t kill the interesst and I now wnat to build my own. The module you have here, looks somwhat like the one in my laser. I notice from the pictures that the RED might be a fatbeam. That is exactly what my laser is as well. If you find a way to tighten up that beam, it would be nice to know.

[tadawson]

I'm still eagerly awaiting the update about analog modulation, although I had been wondering about the redbeam size as well.

- Tim