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  • javanam's Avatar
    Yesterday, 20:08
    Spark gap with only 1 pin ? Because these bulbs have 2 pins but are shorted and soldered together at the same point to pcb. Spark gap doesn't need 2 pins ? How the protection works ? PSU has 4 pairs push-pull rf transistors for driving each output and 4 bulbs 1 bulb per pair of push pull rf...
    2 replies | 108 view(s)
  • Slide's Avatar
    Yesterday, 19:30
    Thinking of getting an OPT Lasers PR8000-RGB Laser for a new project and OPT is willing to upgrade the stock OPT40 scanners if requested. Haven't bought any mid range scan sets for a while. We've had good luck with the DT40s for the price, but I see there's a DT50 now and am wondering if anyone...
    0 replies | 48 view(s)
  • Slide's Avatar
    Yesterday, 18:20
    Found the answer to your commercial unit below this post. Technological Artisans, Thanks
    15 replies | 59350 view(s)
  • Slide's Avatar
    Yesterday, 17:42
    We are looking at maybe opening in a second Planetarium and putting a second (grass roots) laser system together. OPT lasers has a "grating disk" box for sale, but I was wondering where you might have purchased your commercial unit? Thanks in advance.
    15 replies | 59350 view(s)
  • mixedgas's Avatar
    Yesterday, 11:09
    Bulb is not bulb but argon filled calibrated spark gap to protect output. If one needs parts, it is https://www.photovac.com you should contact. Steve
    2 replies | 108 view(s)
  • javanam's Avatar
    03-18-2025, 21:48
    I have a synrad rf60 power supply that inside has something like glass bulbs that emit violet light light like plasma when laser pulses. bulbs have 2 wires that are shorted and the 1 wire is soldered to pcb(excited by rf ? not dc) The problem is that not all these bulbs light some not glow up...
    2 replies | 108 view(s)
  • clickamouse's Avatar
    03-18-2025, 11:17
    clickamouse replied to a thread New Build (FINALLY!!!) in Lumia
    https://photonlexicon.com/forums/showthread.php/26122-Resources-for-Lumia?p=364911#post364911 Cheapest means I've found. Cheers...Mike
    11 replies | 17183 view(s)
  • loopee's Avatar
    03-18-2025, 05:14
    loopee replied to a thread New Build (FINALLY!!!) in Lumia
    You should look at the TMC2209/TMC2130 stepper drivers, pin compatible to the A4988 drivers but do up to 1/256 microstepping and are silent due to the StealthChop feature (removes the common stepper whine noise)
    11 replies | 17183 view(s)
  • laserist's Avatar
    03-17-2025, 12:24
    Just a heads up. The "one minute" refers to the working time not the cure time. You still need to let the epoxy cure completely before running the galvos. Otherwise the mirrors will move...
    5 replies | 1819 view(s)
  • bobbyrl40's Avatar
    03-17-2025, 11:59
    Yeah I was using alcohol so maybe that's the problem too to clean them and I was using fingernail polish to try to glue them in so now I have broke both the new mirrors trying to adjust things now that I have the galvo out I've ordered new mirrors and I got a one minute setting JB weld epoxy I'm...
    5 replies | 1819 view(s)
  • bobbyrl40's Avatar
    03-17-2025, 11:58
    Yeah I freaking tried to fix the mirrors and was trying to adjust it from shooting off to the left and was moving the galvo housing and broke the other mirror so now I have ordered two new mirrors and I was cleaning them with alcohol so maybe that is the problem I have bought some JB weld one...
    5 replies | 1819 view(s)
  • absolom7691's Avatar
    03-17-2025, 11:05
    It also sound like the alignment may be off a little. If it was the X mirror you replaced, it may not be hitting the Y mirror squarely. This can cause some abberations that make the scanner image look fuzzy. Also make sure your mirrors are clean. Try to avoid using IPA (alcohol) to clean optics....
    5 replies | 1819 view(s)
  • PhantomRage's Avatar
    03-16-2025, 10:06
    Long shot, but anyone have one of those Avatar laser command centers collecting dust. I would love a chance to get it. I know old tech but its something I wanted and you know how it goes reliving your youth. Thanks
    0 replies | 458 view(s)
  • djmatt's Avatar
    03-16-2025, 05:34
    djmatt replied to a thread Pre moving sale in Buy/Sell/Trade
    The big scary death laser is sold! as soon as I get back from my trip I’ll be updating the list.
    4 replies | 3067 view(s)
  • MrNIFty923's Avatar
    03-15-2025, 18:12
    I appreciate all the help. I’m going to check the resistance of each leg, meter all the fuses, probably pull the contactor and clean/grease it. Also, remove an additional set old cam lock connectors that were suspect and severely tarnished.
    5 replies | 2979 view(s)
  • absolom7691's Avatar
    03-14-2025, 19:20
    absolom7691 replied to a thread New Build (FINALLY!!!) in Lumia
    Thanks, David! They are most likely the same steppers. I think Adam bought a few after I reviewed them in this thread: https://www.photonlexicon.com/forums/showthread.php/28971-Low-RPM-motor-solution-finally! They work very well when paired with microstepping drivers. Either the A4988 or...
    11 replies | 17183 view(s)
  • DZ's Avatar
    03-14-2025, 18:18
    DZ replied to a thread New Build (FINALLY!!!) in Lumia
    That looks awesome, absolom! I wonder if these are the same stepper motors that Buffo was showing off at a previous SELEM. They were quite impressive, could not see the stepping at all. Glad to see some DIY still going on out there! *DZ
    11 replies | 17183 view(s)
  • absolom7691's Avatar
    03-14-2025, 11:19
    absolom7691 replied to a thread New Build (FINALLY!!!) in Lumia
    After all the hype I gave to those DMX to stepper controllers that I posted about previously, I found that once I pushed myself to get a little more comfortable with Arduino coding, it was far cheaper and way more customizable to just use an Arduino. This would require an A4988 motor controller...
    11 replies | 17183 view(s)
  • absolom7691's Avatar
    03-14-2025, 10:52
    absolom7691 replied to a thread New Build (FINALLY!!!) in Lumia
    It has been too long since I have updated this thread. Like a lot of my projects, they are normally never finished. I work on them when I get the urge. A lot of the fun for me is the journey, not the destination. Anyway... updates! I finally decided to strip out the old DC motor gearboxes and...
    11 replies | 17183 view(s)
  • ablelaser01's Avatar
    03-12-2025, 19:37
    You can get a very big discount if you catch the special offer.
    0 replies | 914 view(s)
  • mixedgas's Avatar
    03-11-2025, 06:47
    Bad news. My manual for the "Housekeeping" board does not have the phase sensing for each phase. They do it another way at 208. Your looking for three dual optocouplers, six plain optocouplers, or three to six miniture transformers. Otherwise they just monitor the DC voltage at the filter and...
    5 replies | 2979 view(s)
  • laserist's Avatar
    03-10-2025, 11:16
    Have you considered the possibility that you've lost a phase or one has too much resistance? It's happened to me several times and it's the simple stuff that's the worst...
    5 replies | 2979 view(s)
  • Braindead3xl's Avatar
    03-10-2025, 10:06
    I'm selling my two Laserworld DS-2400 RGB laser projectors. Selling these two units together as a package. I've got them set up in my loft as projectors #2 and #4, so they're referred to accordingly. I think projector #4's red diode got some use in a past life because although the color is still...
    0 replies | 527 view(s)
  • MrNIFty923's Avatar
    03-09-2025, 11:42
    Thanks Steve. I was looking through all the manuals I have and I was able to find a complete Innova 100 Series service manual. Honestly, I have no idea where it came from. It’s a monster 3 ring binder. It has detailed diagrams and schematics of power supply and laser head. It is somewhat similar to...
    5 replies | 2979 view(s)
  • grainde's Avatar
    03-09-2025, 00:43
    Hi everyone I haven’t been active here, or in fact on LPF in a very long time! About 2 weeks ago, I logged onto LPF and replied to a thread saying I hoped to be around more this year. My account was subsequently banned, as it was deemed to have been compromised… Unfortunately I only ever...
    0 replies | 1031 view(s)
  • mixedgas's Avatar
    03-08-2025, 10:45
    I have a service manual for its non-white-light cousins 208V version . My guess that 60-80% will be the same. Photocopying is well neigh impossible, as the manual is several hundred pages with some odd sized foldouts. It probably weights 10-12 pounds. Manual was a gift from long ago when I...
    5 replies | 2979 view(s)
  • MrNIFty923's Avatar
    03-08-2025, 04:22
    I recently woke up a Coherent Sabre white light from its extended hibernation. Was able to get it to lase initially, holding steady at about 6.5 watts. Everything seemed stable and running good the first couple of times I ran it. However, on the third startup I started getting some buggy electrical...
    5 replies | 2979 view(s)
  • IvanKom's Avatar
    03-07-2025, 06:34
    Hello Thank you very much for your help! I am sorry for long delay, I had a project deadline . >>Is the configuration for the power supply and head set to 10W - 2 diodes system? You are right Both ?SI and ?HI return
    28 replies | 53654 view(s)
  • mixedgas's Avatar
    03-06-2025, 12:27
    Probably plus or minus 1/2 turn of servo gain or HF damping. Steve
    5 replies | 1819 view(s)
  • bobbyrl40's Avatar
    03-04-2025, 10:13
    I have recently bought some used Bermuda x laser 3 Watts and I noticed the mirror was flaking off I replaced it with when I found on eBay the same size and now the image is a little fuzzy
    5 replies | 1819 view(s)
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