Mini DI build #2

[absolom7691]

Well, I have heard the expression that less is more. In this case, I will have more of less. I have given up on big power so that I may have tight single-mode beams with stellar modulation for perfect graphics and projections. After my first DI build, I was so impressed with the performance of these diodes (DTR's kit) that I am FINALLY going through with my master plan. I am going to build 4 of these guys and run them all from Beyond, 1 of them from my QM card and the other 3 from individual FB3s. Yes, they are probably only going to top out at 1/4W each, but I will have 4 of them with the ability to project complex graphics as well as "Laserium" style, complex abstracts.

I just pressed all the holes today. I just need to mill down a channel to drop the height of the scanner block. Once that is done, I can start bolting everything down and get it all tuned in.

Once I get all 4 built, I am going to start a build thread for the rest of the master projector, which is going to have DMX selectable scanthroughs for all 4 heads and a 5 port lumia turret, controlled via DMX.

Projector #2 of 4 is nearing completion. It is amazing how easy these DI diode projectors are to throw together.

[dnar]

Sweet. Watching with interest.

[JasonB]

Sweet. Watching with interest.

+1.

40K, analog modulation, tight beam specs.... **** x4 ! ****
Looking forward to watching your project develop.

[steve-o]

Nice. What kind of scanners do you have on this ?

[absolom7691]

My first one is using DT40s. This is using the PT-40s. I have everything tuned down to 30K though. I am going to be using PTs on the other builds, mainly to keep the cost down.

[absolom7691]

Finally finished #2. Now that the twins are up and running, it's time for bed! Happy new year to everyone!

[Galvonaut]

Finally finished #2. Now that the twins are up and running, it's time for bed! Happy new year to everyone!

Nice work! Happy New Year!

Keith

[dnar]

Nice jobby. No safety shutter?

[swamidog]

what do you think of the PT's vs. the DT's?

My first one is using DT40s. This is using the PT-40s. I have everything tuned down to 30K though. I am going to be using PTs on the other builds, mainly to keep the cost down.

[absolom7691]

As for the safety shutter, I don't do beams. I only shot beams to showcase the units, side-by-side. I also don't do commercial shows. The only people that watch my shows are close friends and family.

I find the DTs to be way more accurate than the PTs for graphics. For abstracts, they are almost indistinguishable. Abstract projection is going to be the primary use for these with some brief graphics tossed in here and there. As far as galvos go, you pay for what you get. If you are thinking of a second head for abstracts, PTs do alright.