Messages

151

3D Printers / Linear rail set from ebay.

« on: April 19, 2014, 02:06:47 PM »

I ran across these rails and picked up a pair. There are a few left if any of you are looking for stuff like this:
http://www.ebay.com/itm/321335524441

The travel is more than I need, but I will extend the two blocks further apart on the rails to decrease whatever play in the rails I encounter by as much as possible.

152

LaserShark Discussion / Re: Bigger project area and wobbly lines, louder mirro after system meltdown/reinsta

« on: April 13, 2014, 09:28:41 PM »

Stimpy had a good suggestion too for this. I recall you wanting to use something that wasn't the "dummy" audio server. but the max range should not have changed as that is dictated by the lasershark and unless you tweaked the pots on the lasershark boards that wouldn't be the issue. The fact you got this working with the other galvo set rules out the lasershark pots too.


Since you aren't familiar with linux I would suggest rebooting the machine between attempts. It is possible to unintentionally get multiple jack server instances running which may lead to confusion on your part.


I don't think leaving the galvos plugged in is a good idea (reason being there's no need more-so than anything else) but I also don't think this alone would harm them unless you had a power surge... and that seems far fetched.


You can check your "fried" galvo power supply with a voltmeter to see if that is the culprit. That's a start. This is a difficult problem to diagnose over the internet with the info provided.

Have you tried running different examples too that you haven't modified?

153

LaserShark Discussion / Re: Bigger project area and wobbly lines, louder mirro after system meltdown/reinsta

« on: April 12, 2014, 08:22:08 PM »

If you have only been tinkering around with linux and not the hardware then this should be a purely software-only issue.

Louder galvo noises and wobbly lines can both be caused by setting the sample rate too high and by increasing the scale in the output window. I think one of these is your issues.. probably the latter since you are commenting on scaling.

Loud noises and wobbly lines can also be caused by improper tuning of the galvo amplifier boards or by fried galvos (generally caused by driving them too hard for extended periods of time). You probably don't have this yet unless you have been tweaking the pots/etc.

154

OpenLase Discussion / Re: Trouble in "cmake .." with "libavresample" to use /playvid

« on: April 10, 2014, 09:37:20 AM »

Cmake is a build system. Before it tries to build components it tries to verify the needed libraries are available to build a component. If that component is not available then that portion of the system is not built. Cmake is working as intended here.

Playvid was made before the ffmpeg/libav group split which you can read about here:
http://blog.pkh.me/p/13-the-ffmpeg-libav-situation.html#content

To try to make this easy to understand at the risk of technicalities:
The package set mint uses is libav and the components that played used are no longer compatible which is why even if you add these components playvid will not build. You would need to drop back to say... ubuntu 10.04 where ffmpeg is still used to get this working.

I'll get to it one day but I get a ton of software requests and each one takes time to make/correct.
If someone else wanted to look at this they should check out how libav factioned this off and then add some conditional code to account both for people with ffmpeg and then those that use libav.

155

3D Printers / Re: LaserShark 3DP for windows 7 64bit

« on: April 06, 2014, 10:26:50 PM »

Cool! Did you have any issues with compiling the code? How familiar are you with cmake? It would be great to have some package searchers for windows made to find libusb and libjson-rpc-cpp. I think it would help others out in the future

Edit: This week will be a really busy one for me, cant wait to get back and finish up the code

156

3D Printers / Re: My test Setup of lasershark and twostep

« on: April 05, 2014, 07:29:00 PM »

Motors can be extremely noisy so their power source and circuitry is isolated from the lasershark as much as possible.

The power from the lasershark is only used to power 1/2 of the uart isolator chip on the twostep board

157

OpenLase Discussion / Re: Trouble working with playilda

« on: April 05, 2014, 07:23:44 PM »

The fact that it is only playing the first frame would not be affected by the number of colors you utilize.

This is either a bug or a limitation of the playilda app which will need to be looked into. This weekend and this coming week will be especially busy for me. After these I might have to take a look.

158

3D Printers / LaserShark 3D Printer Info

« on: April 04, 2014, 07:26:08 PM »

A few individuals are making their own 3d Printers based on the Lasershark/TwoStep electronics or simply a LaserShark and a RAMPS board:
http://macpod.net/electronics/lasershark/lasershark.php
http://macpod.net/electronics/twostep/twostep.php

To follow their progress, it's worthwhile checking out the sla printer builder forum:
http://www.buildyourownsla.com

For host software, Creation Workshop seems to be the popular choice:
http://www.envisionlabs.net


I'm currently developing software to act as a "3d Printer Server"  which 3d modelers/slicer gui apps can connect to via JSON-RPC:
https://github.com/macpod/lasershark_3dp/tree/master

More information and documentation in general will be available after the software is developed more and a client application is made.


This company doesn't seem to be around anymore but for historical and technical resource reasons reason's it's worth noting Pryntech's printer:
http://pryntech.com

159

OpenLase Discussion / Re: Trouble working with playilda

« on: April 04, 2014, 07:10:48 PM »

You need to add and connect sockets for playilda. Please see the following images for my setup. Sorry that the test ilda is so dim.


Note: The second parameter is the lida rate for the file. I probably should have run that as

Code: [Select]

./playilda ../../test_patterns/ILDA12K.ild 12000
For this example it will make it just look flickery. For other multi-frame ilda files it should slow things down... without it the animation would play super fast!

Side note: I haven't played around with the ilda player much and haven't tried out any multi-frame files yet. Let me know how that works out for you if you try.

160

OpenLase Discussion / Re: Loading song into Jack Server for 'circlescope,' & Raspberry Pi

« on: April 04, 2014, 06:56:10 PM »

Glad you were able to resolve this problem and thanks for taking the time to post how you got this working.

Since you are not moving files and only generating a symlink to the current version of libmod, that should generally (there's always that fringe case!) not cause any issues in case you were wondering.

161

3D Printers / Re: My test Setup of lasershark and twostep

« on: April 04, 2014, 06:51:04 PM »

Hi Stimpy

I am glad to hear you at least got the lasershark portion working

I got one problem i don't get power from the twostep to power the lasershark of whas that wrong seeing in the wiring.

The LaserShark powers the TwoStep, not the other way around. You must plug in a USB cable from a computer into the LaserShark. This will then power the one galvanically isolated section of the TwoStep board.

Hope that helps!

162

OpenLase Discussion / Re: Loading song into Jack Server for 'circlescope,' & Raspberry Pi

« on: March 31, 2014, 08:58:51 PM »

To get audio you can either make your own bridge or flip from using the "dummy" jack server to an actual audio server on your computer.

If you click on the info tab in that video there are two download links. Looks like they made and used ILDA files for those examples.

OpenLase is relatively CPU intensive and when I tried it last it had very poor isochronous usb transfer performance so I don't think it will work too well. Since that time someone has corrected the ISO transfer issue (allegedly).

Currently I'm writing software for a 3d printer based on the lasershark. Since this doesn't need to be realtime I used bulk transfers. At some point in the future I may change the lasershark_jack application to use bulk transfers (as an option for platforms like these) but I still don't think it will run well due to the processing power needed for openlase in general.

163

General Discussion / Re: Laser safety: 532nm 5mw-75mw Green Laser on a space heater

« on: March 26, 2014, 06:45:58 PM »

I'm sorry but for legal reasons I can't comment if your system is safe or not.

I would suggest contacting whomever sets and enforces regulations for your respective area for literature. To get you started you may want to check out the following website:
http://www.laserpointersafety.com

Wikipedia also some sources you could utilize to acquire contact information.
http://en.wikipedia.org/wiki/Laser_safety


Last but not least you can check out the photon lexicon forums:
http://www.photonlexicon.com too.

Their focus is not on safety but it's an excellent resource to know about!

164

OpenLase Discussion / Re: more examples

« on: March 25, 2014, 10:30:18 PM »

If you are interested in sharing your own creations you should signup for a github account (it's free), fork off the openlase repo and then start committing!

165

OpenLase Discussion / Re: more examples

« on: March 25, 2014, 07:12:04 PM »

Aside from the other examples within the examples directory (that sometimes require additional hardware to run such as a game controller) no. I'm hoping with time more will make an appearance as more lasersharks get out there.