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I think you mean "ex-friend" ;)

Thanks so much, all good info! As it turns out the OPT PR8000-RGB is too small to fit the DT 50 electronics and mirrors in. They say they use the DT 50s in 20w and higher lasers. So... makes the decision easy ha ha, I'm going with the DT 40s. Should be here mid April, we'll see how it looks. ...

Hank, I think you are my "oldest" friend. *retardo

Hi everyone! I realize that the last post on this thread was 18 years ago. I too am trying to find the adult ILDA graphics. A friend of mine had them before hurricane Katrina in 2005. If anyone could point me in the right direction or possibly have them, let me know! Thanks!

I'll take that Senior Discount! 😉

For the blue version of this laser, 6 flashes is head read error... I might have the 85-YCA manual on a different computer, will check. Do you have a different cable you can try?

Those may still be supported by a company in Rochester New York that brought the remains of Melles and did the MBA split thing. Try at IDEX Health and Science. You'll have to call for tech support., you won't find it on the website. Steve

Update March 30, 2025: Sold.

Who are you calling “old”?

I'll be there. Plan to bring my VR rig again as well as my DJI FPV. If possible I would like to attempt some FPV racing in the field next to the venue. Can't wait to see my old friends!!

HOLY this thread is amazing! I did not even think to use half this stuff for laser effects. Now off to thrift stores with the laser pointer and another project to build.

I have a set of DT50s. Solid performers. Things may have changed since I bought mine but I don't believe the DT50s come with a power supply. That being said, be sure to use a beefy PSU as they are a little power hungry and you need a PSU that can handle the current spikes needed for...

No. Adulting is over rated. And yeah, I guess I’ll come.

Oh hey, I'll go. Shirt size XL

I must have felt the call of the signup page appearing! I stayed at the Homewood Suites last time (I think) 😉 Next door to where more people stayed. I will be getting a room with two queen-sized beds .. so looking for a roommate to share costs. I will be renting a car for transport to/from the...

Thanks Steve. I appreciate. Your help will be very useful for my lab. Mbhomi

I'll scan it in. Take a day or two. Steve

So I was unboxing this random box that arrived and had a very chill experience. A Hybrid 98 type of Chill. THANKS MATT...:cool::cool::cool::cool::cool::cool::cool::cool::cool::cool::cool::cool::cool::cool::cool::cool:;););););););););););););););););) Steve

Good job! Steppers rool.

Thanks so much! That's just the info I was hoping to find. Yes, 30k for sure. We have some projectors that have been using the DT 40 scanners for 10 years in the Planetarium. We are finding that they are a pretty good budget device. Our shows are about 50/50 Fulldome video and laser imagery...

Thanks. I’m not going to bother messing with disassembly of the contactor. It’s hermetically sealed. I’ll just replace it, whole hog. Bye bye. Plenty on eBay for bargain price. That’s got to be the issue. I will update on the repair!

Can somebody provide the manual of Omnichrome series 74 HeCd laser and PSU please?

Nice work, Brian! The steppers that we were playing with at SELEM were indeed the same ones you originally posted. They have a 60-1 planetary gearbox on the output shaft. I've seen that same design with a 100-1 gearbox, but I think that would be too slow. I had issues with the A4988 stepper...

The DT50 scanners are rated to 50kpps, so in theory they should be 20 ~ 25 % faster than the DT40 units. Your mileage may vary, however. :rolleyes: I would recommend upgrading to the DT40 units at least, as I've experienced a few artifacts with the stock OPT scanners when running spiral...

This chattering sound could be an indication of a failing contactor, or it could be that the control voltage to the contactor is low. Neither is good. I'd check that unit thoroughly. If the pull-in coil is weak, you often hear that chattering sound; this will cause arcing between the contacts...