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Messages - James

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1
DACs / Re: Genuine Extra Stimulus LaserBoy Correction Amp Boards!
« on: May 03, 2022, 01:40:31 pm »
I forgot to answer your question about the image size control. That is just a 100K stacked stereo potentiometer. It goes between the output of the correction amp X and Y channels and the DB25 socket holes 1 and 2. It is just an attenuator, like any other audio volume control.

2
DACs / Re: Genuine Extra Stimulus LaserBoy Correction Amp Boards!
« on: May 02, 2022, 11:40:40 am »
Hi Banglabastler!

The I channel corresponds to the 6th channel of the sound device. So the order is:

1 X
2 Y
3 r
4 g
5 b
6 i

If you have a laser projector that only has one color, you can make wave files in LaserBoy that have a mix of the rgb signals in the 6th channel. Then you drive your laser modulation input with the i signal. If you hooked it up to one of the other color channels, then it would only come on when that color is in the art. There are a few different signals you can put in the i channel and there are settings in LaserBoy to choose. It's also possible to put Z in the i channel if you have 3D  vector data. This might be useful if you have some kind of analog signal processing that can deal with 3D input signals.


A capacitor blocks DC in an audio-like signal. This is fine for audio because DC could actually damage a speaker. But for vector position signals, this is no good. Putting a signal through a capacitor is the math equivalent of the first derivative of a function. So instead of the absolute voltage over time, you get the change in voltage over time. Let's say you want to display a single dot above and to the right of the center of the screen (in the all positive area with respect to the origin 0,0). If you want to hold that dot there for a few seconds you will have X and Y signals that start at zero and jump to some positive voltage and stay at that constant voltage for however long you want to display the dot. A constant voltage has no change over time! So a DC blocking capacitor would start to discharge as soon as the dot appeared and the dot would drift back to the center of the screen. This is also required for color signals because they are nothing but positive voltages.

3
LaserBoy !!! / Re: Installing LaserBoy on macOS Big Sur 11.6.5
« on: April 29, 2022, 06:30:30 pm »
Excellent! You have the most current version!

4
LaserBoy !!! / Re: Installing LaserBoy on macOS Big Sur 11.6.5
« on: April 29, 2022, 03:45:10 pm »
Fantastic!

Welcome to the world of LaserBoy!

What is the version (date) on the main menu?

Looking forward to seeing you on FB.

James.

5
LaserBoy !!! / Re: Installing LaserBoy on macOS Big Sur 11.6.5
« on: April 29, 2022, 12:12:03 pm »
Derek Holzer organized Vector Hack Festival and started Vector Synthesis. I was a presenter in VHF 2020. Great bunch of people.

Try setting the permissions for rwx all to on as root.

chmod 777 LaserBoy

Then run it as root.

Also, make sure the executable is in the .../LaserBoy folder and when you run it your shell is in that folder too.

6
LaserBoy !!! / Re: Installing LaserBoy on macOS Big Sur 11.6.5
« on: April 28, 2022, 05:21:06 pm »
If you are on Facebook, you should join a group called Vector Synthesis. There are quite a few people there who use LaserBoy on a Mac and they do a lot of other neat stuff too!

One of the members there compiled the code for you!

https://laserboy.org/code/LaserBoy_OSX.zip

Let me know when you get it and if it works. This is just the executable. I don't want to leave this out there for very long. I want to delete it. Also let me know what version this is.

Thanks!
James.

7
LaserBoy !!! / Re: Installing LaserBoy on macOS Big Sur 11.6.5
« on: April 27, 2022, 10:54:58 am »
I will ask a group of Mac LaserBoy users about homebrew run as root.

The command

make -f Makefile.osx clean

will delete all of the object files and the executable if there is one. If your build fails, you should clean before you try it again.

8
LaserBoy !!! / Re: Installing LaserBoy on macOS Big Sur 11.6.5
« on: April 26, 2022, 08:47:57 pm »
Hi Lewis!

DL the current version https://laserboy.org/code/LaserBoy_Current.zip

It has up to date instructions for Mac OSX using homebrew.

Let me know if this works for you or if you have any other questions.

Good luck!

James.

10
Construction / Re: Teensy Laser Control
« on: January 23, 2022, 01:13:53 am »
You don't understand what you think of as (your own) common sense is actually extremely specific, self-taught and rare.

I am very good at the things I have pursued for decades.

Don't assume I know everything around the edges. I really don't. As a matter of fact, my narrow focus on what I know sometimes makes it just that much more difficult to grasp outside concepts.

But I must say that I have learned so much by engaging with other people who are interested in what I am doing and want to use it to do what they envision as their next thing.

11
Construction / Re: Teensy Laser Control
« on: January 18, 2022, 03:35:01 pm »
Hello Hermit!
Welcome to the LaserBoy Forum.
We should have a chat. I'd like to know more about what you know!
James.

12
Free Art ! / Re: introducing..
« on: December 05, 2021, 02:58:30 pm »
Hi Paul! Welcome to The LaserBoy Forum.

Wow! Nice pictures on your first post.

That's really cool.

I'm glad you are having fun with LaserBoy.

13
LaserBoy !!! / Re: DOWNLOAD IT HERE !!!
« on: August 08, 2021, 11:47:43 am »
New version!

08-04-2021

https://laserboy.org/code/LaserBoy_Current.zip

This has a full implementation of LaserBoy Liquid Math, with documentation!

14
LaserBoy !!! / Re: Laserboy ILDA to Laser Projector Not Working
« on: August 04, 2021, 11:23:32 pm »
Finally!

A new full public release of LaserBoy!!!

https://laserboy.org/code/LaserBoy_Current.zip

I cleaned up everything. If you already have an installation folder of LaserBoy, I would recommend renaming it as old and unzipping this in its place. Then move your files from the old folder(s) to this new one.

For Windows users: The zip no longer contains a 32-bit version.

LaserBoy.exe is now a 64-bit application.

Please let me know if you find any problems or have questions.

15
LaserBoy !!! / Re: DOWNLOAD IT HERE !!!
« on: April 03, 2021, 06:32:34 pm »
Wow! That's really nice. Thank you.

If you like the current version you should check out the version I work on almost every day. It has all kinds of new features. Can you compile the source?
I'd love to have a conversation with you. I bet you have a lot of good ideas.

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