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  • dkumpula's Avatar
    Today, 12:05
    Exactly! You must mean like this flight from Hungry Mother State Park this morning:
    50 replies | 4632 view(s)
  • ronhip's Avatar
    Today, 09:39
    ronhip replied to a thread CYGN-B in The Lounge
    I've attached a zipped mp4 (this forum does not allow direct mp4 attachments...) of the section you pointed to below, without all the messing around with contrast and saturation. You may be able to see more of the scan subtleties that were lost in the youtube version. Excuse the 60Hz hum. These...
    175 replies | 11188 view(s)
  • ronhip's Avatar
    Today, 09:24
    ronhip replied to a thread CYGN-B in The Lounge
    Greg, You got them! Those ARE the dogloids. Sorry that Scott went a bit too far with his enhancement of contrast and saturation when processing the video. The rotating box (the only way I can describe it) also has another wrinkle to it. Depending on when the dogloid is selected, that specific...
    175 replies | 11188 view(s)
  • laserist's Avatar
    Today, 05:49
    laserist replied to a thread CYGN-B in The Lounge
    Yes, those are dogloids in the video... The Police show was several years after I left.
    175 replies | 11188 view(s)
  • Lazerjock's Avatar
    Today, 04:34
    Having a Part 107 License has its pros and cons. If you plan to fly for money then you definitely need it. There are rare locations I am able to fly under my 107 that I can't as a recreational pilot......legally. Then there is the "I didn't know that" scenario. Sometimes it's better to ask...
    50 replies | 4632 view(s)
  • Greg's Avatar
    Today, 02:07
    Greg replied to a thread CYGN-B in The Lounge
    In which case a show that came after Crystal Odyssey might have them. Good point, Brian. The Police show on first inspection does appear to have more code, and different. And there is a number from that show which has several images which look to me like the dogloids. Video is here: ...
    175 replies | 11188 view(s)
  • VDX's Avatar
    Today, 01:26
    ... yes, exactly my point -- power rulez!! :cool: Viktor
    5 replies | 131 view(s)
  • plazmatron's Avatar
    Today, 01:07
    Thanks for all the comments guys. Sure, yes, you can drive them with Diode Lasers, but only under specific circumstances with a very well designed cavity. I have seen a couple of academic papers on this. It certainly looks possible, but output powers seem so low, I might as well invest my time...
    5 replies | 131 view(s)
  • VDX's Avatar
    Today, 00:44
    ... the needed peak powers are pretty high! - my Nitromite emits 200ps long pulses at roughly 400 Kilowatts(!!) peak power with a repetition rate of 30 Hz (averaged in the Milliwatts). Viktor
    5 replies | 131 view(s)
  • mixedgas's Avatar
    Yesterday, 17:43
    There are now CW diode pumped dye lasers, but required active cavity length matching, locking, diode wavelength and linewidth narrowing, a custom 4 mirror ring cavity, and custom chemically modified dyes are required to work with a 445 pump. Two dyes are used as a donor-receptor pair. For a few...
    5 replies | 131 view(s)
  • absolom7691's Avatar
    Yesterday, 15:02
    Really awesome video! Thank you for sharing! What kind of peak powers are needed for the dye to achieve a lasing state? I would imagine pretty high considering there are no CW diode pumped dye lasers.
    5 replies | 131 view(s)
  • dchammonds's Avatar
    Yesterday, 13:22
    Never underestimate what can be done with analog circuits- think about all those synthesizers from back in the 60's & 70's.
    317 replies | 76058 view(s)
  • james's Avatar
    Yesterday, 12:14
    Really? Using the concept of a pendulum that has amplitude, frequency, phase and damping in the form x(t) = P1(t) + P2(t) y(t) = P3(t) + P4(t) and animating it by doing linear interpolation between two sets of pendulum specs? This is a bit more than a Lissajou.
    317 replies | 76058 view(s)
  • plazmatron's Avatar
    Yesterday, 12:12
    I though you guys might appreciate this video. An LSI Nitrogen Laser teardown, and a Dye Laser Demo! https://m.youtube.com/watch?v=US3vLJIUGoU Cheers!
    5 replies | 131 view(s)
  • swamidog's Avatar
    Yesterday, 09:54
    just about every single abstract generator....
    317 replies | 76058 view(s)
  • laserist's Avatar
    Yesterday, 07:23
    laserist replied to a thread CYGN-B in The Lounge
    I remember the dogloids as being a Crystal Odyssey thing...
    175 replies | 11188 view(s)
  • Greg's Avatar
    Yesterday, 04:27
    Greg replied to a thread CYGN-B in The Lounge
    Bit of a damp squib to report. Starship and Laserock2 mon and pts roms have been reviewed. Both contain byte for byte the identical block of code I have been already working with, meaning the five previously discussed routines. Each rom also contains one small bit of code that feeds points to the 4...
    175 replies | 11188 view(s)
  • Bradfo69's Avatar
    Yesterday, 02:17
    Here is a few resources to get you started. https://pangolin.com/blogs/education/creating-safe-laser-shows https://pangolin.com/blogs/education/laser-show-compliance Q12: What are the basics of laser safety? A12: In general, the cardinal rule of operating high powered lasers is: Do...
    5 replies | 277 view(s)
  • dchammonds's Avatar
    07-03-2020, 22:29
    Uhhh, I was just thinking it would be easier to deal with a little at a time vs one big file with a whole bunch of stuff at once. My bad...:rolleyes:
    317 replies | 76058 view(s)
  • james's Avatar
    07-03-2020, 22:23
    Just out of curiosity, have there ever been any other implementations of an animated harmonograph generator for laser display? I mean the kind described here: https://en.wikipedia.org/wiki/Harmonograph
    317 replies | 76058 view(s)
  • james's Avatar
    07-03-2020, 21:54
    What??? I'm not sure how I could make it any simpler. BTW, your version of rhodoneas (animation) shrinks down because you set the radius of the second state to 0.1. Do you have any questions about how any of this works? Grab LB_temp.zip again or the whole thing. I just tweaked something...
    317 replies | 76058 view(s)
  • dchammonds's Avatar
    07-03-2020, 19:32
    You might want to include a few simplified txt files in your bundle to make it easier for beginners to get started.
    317 replies | 76058 view(s)
  • james's Avatar
    07-03-2020, 11:39
    Fixed it. Now you have to type the dot at the end of math. to differentiate it from math2.txt. LaserBoy_2020_07_03 James.
    317 replies | 76058 view(s)
  • james's Avatar
    07-03-2020, 10:52
    Well, something is weird. I had a whole mess of txt files in my ./LaserBoy/txt folder. So I moved them all but math.txt and math2.txt and now it doesn't even give me an opportunity to type a file name. It just asks me how to load math.txt. I'll fix it. So have you made any of your own...
    317 replies | 76058 view(s)
  • dchammonds's Avatar
    07-03-2020, 08:54
    I get the same problem on both my laptop&desk machines. Are you sure that you had both math.txt & math2.txt in the directory when attempting to select an input file?
    317 replies | 76058 view(s)
  • james's Avatar
    07-03-2020, 07:19
    I am not able to reproduce this error. It works fine for me in both Linux and Windows.
    317 replies | 76058 view(s)
  • dkumpula's Avatar
    07-03-2020, 04:22
    I was thinking about this and while an admirable goal, I think you'd need two operators (one to fly, one to operate a second gimbal mounted camera) to pull this off. I say this because the automated flight allows for the smooth curved travel between way-points - really challenging flying...
    50 replies | 4632 view(s)
  • jes89's Avatar
    07-03-2020, 00:46
    Now I am listening ....... https://www.youtube.com/watch?v=8EJ3zbKTWQ8 Regards; Jes,,,,,,,,
    287 replies | 76452 view(s)
  • wheezyliam's Avatar
    07-02-2020, 19:29
    Yikes, it looks like there's not much else out there in that price range with similar functionality. Guess adding a laser to a small club show is a bit of a tall order. Are there any resources available that detail optimal safe projector positioning? If I end up getting a Lasercube, I would want...
    5 replies | 277 view(s)
  • polishedball's Avatar
    07-02-2020, 19:06
    Thanks Ryan and Pangolin for offering us all this great discount. Can't wait to quit suffering at the cottage and get home to install these.
    29 replies | 2511 view(s)
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