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  • james's Avatar
    Today, 07:00
    If you generate a frame_set and you want to save it for use later in the script you can store it in an invisible list of frame_sets and recall it later. There are only 2 registers A and B to do math on, but you can store as many frame_sets as your RAM will support. In Win32 your heap is...
    480 replies | 103371 view(s)
  • james's Avatar
    Today, 06:50
    Cool! Thanks! I'll fix that in my cheat-sheet.
    480 replies | 103371 view(s)
  • james's Avatar
    Today, 06:19
    In your example, 3 and 5 are the amplitude. 0 and 90 are phase. It's worth noting that since this all gets scaled to fit inside of short integer space, the actual size of a figure is more or less irrelevant except when compared to other figures in the same space. Offset is also typically...
    480 replies | 103371 view(s)
  • james's Avatar
    Today, 05:47
    If you add two forms that are essentially the same thing that's the same as multiplying one form by 2. It just gets twice as big. If you want to add two frame_sets vertex-to-vertex you make sure they are both in the registers (generate one then generate the other) and call math add This...
    480 replies | 103371 view(s)
  • lasermaster1977's Avatar
    Today, 05:43
    Yeah, James, I'd like to see an example of Greg's request myself. For example: Show the Liquid Math equivalent for deriving: X=3*sin(0)+5*sin(0), Y=3*sin(90)+5*sin(90) I'm guessing the constant multipliers here equate to Frequency in liquid math, i.e. for circle 1 = frequency of 150, circle 2...
    480 replies | 103371 view(s)
  • laserist's Avatar
    Today, 04:05
    laserist replied to a thread CYGN-A in The Lounge
    The LM339 comparators have open collector outputs. You choose a pull up resistor appropriate to the logic family you use. I'm sorry, the inverters I mentioned, sometimes called NOT gates. Example 74LS04 hex inverter.
    92 replies | 5680 view(s)
  • Greg's Avatar
    Today, 02:56
    Greg replied to a thread CYGN-A in The Lounge
    What a great idea. The graphic shows what I think has been described, but a recommended approach to the NOR gates would be helpful. I have HD74LS02 NOR gates which operate 0 to +5V. The square waves from the comparators are +-15V. Should I: 1) use voltage dividers and summing amps to scale and...
    92 replies | 5680 view(s)
  • Greg's Avatar
    Today, 02:36
    Please would you show how to sum two or more circles.
    480 replies | 103371 view(s)
  • dchammonds's Avatar
    Yesterday, 20:12
    I finally got around to installing MSYS2 on my laptop- I got tired of running downstairs to use the mainframe and a jump drive every time I needed to compile something...*nyancat In msys2_build_notes.txt I had to change the following line from pacman -S --needed base-devel \ to ...
    480 replies | 103371 view(s)
  • james's Avatar
    Yesterday, 18:32
    Thank you! I love the idea that I can make something substantial out of nothing but thought. I love the fact that I can give it to anyone who wants it and I still have it for myself. I love the fact that people use it all over the world. I love the fact that it has been used by artists...
    480 replies | 103371 view(s)
  • lasermaster1977's Avatar
    Yesterday, 16:25
    I must correct a statement I made previously. I did NOT get an A in Calculus II (but I was on track to get an A). I dropped all my classes mid-semester to focus full-time on creating laser planetarium shows and the digital/analog electronics that goes with it because the fun, the creativity and...
    480 replies | 103371 view(s)
  • lasermaster1977's Avatar
    Yesterday, 16:06
    your link was to the 4:02 version, DOAH!
    480 replies | 103371 view(s)
  • james's Avatar
    Yesterday, 16:05
    Thanks lasermaster1977! Most of what I know about math comes from endlessly messing around with it until it works. I don't have any formal education in math past having bombed out of college Calculus. I never ever did homework in any math class but I always did very well on the tests. So I got...
    480 replies | 103371 view(s)
  • james's Avatar
    Yesterday, 15:55
    It's the 4:20 version. What do you expect?
    480 replies | 103371 view(s)
  • absolom7691's Avatar
    Yesterday, 15:08
    Welcome to PL! There are quite a few gents on your side of the pond that would probably be happy to grab a beer at the pub with you. Enjoy your stay here and soak it in. There is a lot of information here and a lot of professionals who literally have decades of experience if not a half a...
    1 replies | 100 view(s)
  • lasermaster1977's Avatar
    Yesterday, 14:43
    Good catch. It should be https://laserboy.org/code/LB_04_20_2021.zip
    480 replies | 103371 view(s)
  • lasermaster1977's Avatar
    Yesterday, 14:36
    Consider this: My first trigonometry teacher in college, absolutely new the subject matter it like the back of his hand but conveyed the subject matter in a very math elitist, abstract, hard to understand manner. My grade for the semester was F. My first Calculus I teacher was, unfortunately...
    480 replies | 103371 view(s)
  • dchammonds's Avatar
    Yesterday, 14:15
    You might want to fix your link to the newest version...
    480 replies | 103371 view(s)
  • james's Avatar
    Yesterday, 13:04
    It's all relative when "normalizing" real number frame_sets to LaserBoy_space based on "to_frame" of the whole cube of signed short integers. So, if you include the unit reference, the frame_set will be normalized with that in space too. So your lissagou frame will be relative in size to the unit...
    480 replies | 103371 view(s)
  • Greg's Avatar
    Yesterday, 12:59
    so If I go with: math LBO1 phase 90.0 math LBO1 amplitude 0.2 math LBO2 amplitude 0.1 math lissajou math render Then am I correct that the "math render" function causes LB to scale the real numbers so the small oval still appears big? How do I get the small oval into the LB...
    480 replies | 103371 view(s)
  • james's Avatar
    Yesterday, 12:38
    I'm curious as to how many people on this forum read these posts and think "OMG MATH!!!" and run away because they are sure it's way beyond understanding. It's not.
    480 replies | 103371 view(s)
  • james's Avatar
    Yesterday, 11:03
    I just updated the code and a bit of the documentation. https://laserboy.org/code/LB_04_20_2021.zip Now you can go into menu u and set option b to make the menus a solid color and go into the menu, option 4, option 5 to set the rgb values of the monochrome menu color.
    480 replies | 103371 view(s)
  • james's Avatar
    Yesterday, 08:25
    Now, if you want to see what LaserBoy Liquid Math was really designed to do you need to look at the animated version of lissajou. This form uses two sets of parameters (twice as many as the single frame form) plus a frames count. It looks like this: math start 0.0 math...
    480 replies | 103371 view(s)
  • laserist's Avatar
    Yesterday, 08:16
    laserist replied to a thread CYGN-A in The Lounge
    I used encoders in the field, but by the time I was in LA I was wearing too many hats. Choreographer was a full time job. One way to do real time editing is to use a computer. Maybe a midi control surface for input. A time code on the sound track. One approach to color mod: Start with 5...
    92 replies | 5680 view(s)
  • james's Avatar
    Yesterday, 06:25
    Well, I don't like having to reach over and grab the rodent just to have to find the pointer on the screen and drag it around to click on a menu item. So yes. I also think that key stroke menus are way faster. OK! Now we are getting to the meat and potatoes. A generator is what causes LB...
    480 replies | 103371 view(s)
  • preston135's Avatar
    Yesterday, 02:15
    hi there, im from a place called stockton on tees in the UK i bought a laser. keyed in a few parts on t'interweb and ended up on this forum enjoyed reading it so far.. full of usefull info. i would quite happily go for a beer and discuss lasers. :rolleyes:
    1 replies | 100 view(s)
  • Shadow's Avatar
    04-19-2021, 22:22
    Shadow replied to a thread Styropyro in The Lounge
    You guys definitely have wisdom to give. Reading all of your comments on it have helped me align my thinking. It's great to be able to chat with you guys on here.
    22 replies | 1176 view(s)
  • Greg's Avatar
    04-19-2021, 19:29
    Am I incorrect that the alternative to lots of menus with lots of functions is... lots of menus with lots of functions that requires aiming and traversing as well as selection? To be clear, all I'm saying is, speaking for me only, I like the interface, it's gets very fast for commonly performed...
    480 replies | 103371 view(s)
  • james's Avatar
    04-19-2021, 18:05
    Well I guess so. It came together in bits over time for me and it does so many things, and I had to first see the need of something and then code it and test it. I tried to organize functionality in sensible ways in the menu system. But there is a lot to it. A big limitation of a key stroke menu...
    480 replies | 103371 view(s)
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