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Old 06-29-2012, 06:02 PM #17
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Default Re: OpenLPM - The free, open-source LPM project!

Well, Peregrine was in the works to be the solution - but for lack of someone willing to contribute from the Apple side, I might have to just write a Windows implementation.

Pending permission from Kenom, I can remove the handshake from Luminosity to make it compatible.

Or I can come up with a more lightweight version.

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Old 12-08-2012, 05:58 PM #18
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Default Re: OpenLPM - The free, open-source LPM project!

I've currently got a 2.0 release in a small beta test... major update.

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Old 12-11-2012, 03:33 AM #19
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Default Re: OpenLPM - The free, open-source LPM project!

OpenLPM Mk. I version 2.0 is ready for public beta!

https://dl.dropbox.com/u/6083542/Ope...I_2_1_1_5B.zip
  • Added support for ALL current Arduino boards.
  • Added support for an external ADC.
  • Added support for a customizable curve adjustment.
  • Added a feature that will, in the future, add support for third-party sensors such as the LaserBee sensors.
  • Added automatic error checking at compile time, to help ensure OpenLPM will behave as expected.

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Old 12-12-2012, 05:26 PM #20
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Default Re: OpenLPM - The free, open-source LPM project!

This is pretty cool but it would be a hundred times more useful with a tutorial to make the sensor head.

If the tutorial had links to all parts (TEC, heatsink, coating paint) from Ebay/DX/whatever and a step-by-step coating guide it would take most of the guessing out of the equation. It'd still need calibration to be precise but I think it would at least be usable without calibration.

Keep up your great work

Edit: I'd be willing to code an open source grapher/logger for this if someone made a proper laser head tutorial!
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low 445nm: C6 from Survival Lasers (1351mW pk|1289mW avg|1100mW rtd)
high 450nm: NewWish (12.6mW pk|5mW rtd) | Dominator by Blord (3010mW pk|2779mW avg during 5min)
462nm: 501B by Atomic (1507mW avg)
473nm: BWB-10-OEM labby by CNI (10mW rtd)
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low 520nm: MXDL pen by DTR (31.6mW pk|28.8mW avg)
high 520nm: Laserlands (8mW avg)
532nm: NewWish (28.6mW pk|26.8mW avg|10mW rtd) | Dapper (30.3mW pk) | Classic (120.0mW pk|103.1mW avg|100mW rtd) | "The Green Box" by Atomic (176.7mW pk|140.0mW avg)
589nm: Spartan from Dragon Lasers (58.4mW pk|37mW avg|50mW rtd)
632.8nm: HeNe pointer by Atomic (0.68mW rtd)
635nm: NewWish (4.6mW avg|5mW rtd)
638nm: Classic from Lazerer (409.3mW pk|389.4mW avg|415mW rtd)
650nm: NewWish (10.6mW pk|5mW rtd) | Dilda (216.3mW avg|200mW rtd)
685nm: laser-in-a-box by Atomic (30.4mW pk|29.3mW avg) | 501B by Atomic (32.4mW avg)
780nm: module (2.7mW avg|5mW rtd)
808nm: Classic modded from a 532nm (162mW avg)
850nm: module (8.8mW avg|7mW rtd)
980nm: NewWish (81mW pk|5mW rtd) | 2nd line around 490nm

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Old 12-12-2012, 05:32 PM #21
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Default Re: OpenLPM - The free, open-source LPM project!

Quote:
Originally Posted by Atomicrox View Post
This is pretty cool but it would be a hundred times more useful with a tutorial to make the sensor head.

If the tutorial had links to all parts (TEC, heatsink, coating paint) from Ebay/DX/whatever and a step-by-step coating guide it would take most of the guessing out of the equation. It'd still need calibration to be precise but I think it would at least be usable without calibration.

Keep up your great work

Edit: I'd be willing to code an open source grapher/logger for this if someone made a proper laser head tutorial!
This thread will show you how tot make the head: DIY Thermal LPM for under $50

Calibration is what makes an LPM an LPM. If they don't have that it's just a fancy voltmeter. Every coating is different, and not everyone has access to the same paints so the OPA gain will be different for everyone.
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Old 12-12-2012, 05:57 PM #22
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Default Re: OpenLPM - The free, open-source LPM project!

Thanks for the link but that's why I mentioned links to internationally available online stores and a step by step coating guide. Calibration would be much closer and those of us that have no reasonable way to calibrate would have at least a rough estimate of power.

Another viable option would be a member willing to make, calibrate and sell the heads for a reasonable price. By reasonable I mean less than 100 bucks a head.]
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low 445nm: C6 from Survival Lasers (1351mW pk|1289mW avg|1100mW rtd)
high 450nm: NewWish (12.6mW pk|5mW rtd) | Dominator by Blord (3010mW pk|2779mW avg during 5min)
462nm: 501B by Atomic (1507mW avg)
473nm: BWB-10-OEM labby by CNI (10mW rtd)
~462-476nm "Tunablue" by Atomic (1.5W pk)
low 520nm: MXDL pen by DTR (31.6mW pk|28.8mW avg)
high 520nm: Laserlands (8mW avg)
532nm: NewWish (28.6mW pk|26.8mW avg|10mW rtd) | Dapper (30.3mW pk) | Classic (120.0mW pk|103.1mW avg|100mW rtd) | "The Green Box" by Atomic (176.7mW pk|140.0mW avg)
589nm: Spartan from Dragon Lasers (58.4mW pk|37mW avg|50mW rtd)
632.8nm: HeNe pointer by Atomic (0.68mW rtd)
635nm: NewWish (4.6mW avg|5mW rtd)
638nm: Classic from Lazerer (409.3mW pk|389.4mW avg|415mW rtd)
650nm: NewWish (10.6mW pk|5mW rtd) | Dilda (216.3mW avg|200mW rtd)
685nm: laser-in-a-box by Atomic (30.4mW pk|29.3mW avg) | 501B by Atomic (32.4mW avg)
780nm: module (2.7mW avg|5mW rtd)
808nm: Classic modded from a 532nm (162mW avg)
850nm: module (8.8mW avg|7mW rtd)
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Old 12-12-2012, 06:17 PM #23
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Default Re: OpenLPM - The free, open-source LPM project!

The issue of sensor calibration is something that we're (a few of the laserchat regulars - I'm not pretending I'm a company haha) working on.

I'm pretty busy with finals, but one of my projects over break is to work on finding a solution to this. Once we've got that, plus either a free or open-source datalogger, we're golden. Nearly free or at least cheap LPM's for everyone!

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Old 12-12-2012, 06:27 PM #24
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Default Re: OpenLPM - The free, open-source LPM project!

+rep for that!
I'll code the datalogger if you guys manage to solve the calibration issue. I'm way better with software than hardware :P
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low 445nm: C6 from Survival Lasers (1351mW pk|1289mW avg|1100mW rtd)
high 450nm: NewWish (12.6mW pk|5mW rtd) | Dominator by Blord (3010mW pk|2779mW avg during 5min)
462nm: 501B by Atomic (1507mW avg)
473nm: BWB-10-OEM labby by CNI (10mW rtd)
~462-476nm "Tunablue" by Atomic (1.5W pk)
low 520nm: MXDL pen by DTR (31.6mW pk|28.8mW avg)
high 520nm: Laserlands (8mW avg)
532nm: NewWish (28.6mW pk|26.8mW avg|10mW rtd) | Dapper (30.3mW pk) | Classic (120.0mW pk|103.1mW avg|100mW rtd) | "The Green Box" by Atomic (176.7mW pk|140.0mW avg)
589nm: Spartan from Dragon Lasers (58.4mW pk|37mW avg|50mW rtd)
632.8nm: HeNe pointer by Atomic (0.68mW rtd)
635nm: NewWish (4.6mW avg|5mW rtd)
638nm: Classic from Lazerer (409.3mW pk|389.4mW avg|415mW rtd)
650nm: NewWish (10.6mW pk|5mW rtd) | Dilda (216.3mW avg|200mW rtd)
685nm: laser-in-a-box by Atomic (30.4mW pk|29.3mW avg) | 501B by Atomic (32.4mW avg)
780nm: module (2.7mW avg|5mW rtd)
808nm: Classic modded from a 532nm (162mW avg)
850nm: module (8.8mW avg|7mW rtd)
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Old 12-12-2012, 07:09 PM #25
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Default Re: OpenLPM - The free, open-source LPM project!

Yup, there is a foreseeable solution. I found a manufacture that sells TEC's pre-painted black. This way the paint would all be the same, and a gain could be found that gives a decent enough accuracy.
They require a large minimum order though, so I'll get a few samples then if all goes well we can do a GB for the TEC's or someone could stock them.
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Old 12-12-2012, 07:12 PM #26
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Default Re: OpenLPM - The free, open-source LPM project!

I'm in, get the heatsinks as well to be sure everyone has the same.
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405nm: NewWish (29.1mW avg|5mW rtd) | Dilda (81.5mW avg|200mW rtd) | 501B by Blord (633mW pk)
low 445nm: C6 from Survival Lasers (1351mW pk|1289mW avg|1100mW rtd)
high 450nm: NewWish (12.6mW pk|5mW rtd) | Dominator by Blord (3010mW pk|2779mW avg during 5min)
462nm: 501B by Atomic (1507mW avg)
473nm: BWB-10-OEM labby by CNI (10mW rtd)
~462-476nm "Tunablue" by Atomic (1.5W pk)
low 520nm: MXDL pen by DTR (31.6mW pk|28.8mW avg)
high 520nm: Laserlands (8mW avg)
532nm: NewWish (28.6mW pk|26.8mW avg|10mW rtd) | Dapper (30.3mW pk) | Classic (120.0mW pk|103.1mW avg|100mW rtd) | "The Green Box" by Atomic (176.7mW pk|140.0mW avg)
589nm: Spartan from Dragon Lasers (58.4mW pk|37mW avg|50mW rtd)
632.8nm: HeNe pointer by Atomic (0.68mW rtd)
635nm: NewWish (4.6mW avg|5mW rtd)
638nm: Classic from Lazerer (409.3mW pk|389.4mW avg|415mW rtd)
650nm: NewWish (10.6mW pk|5mW rtd) | Dilda (216.3mW avg|200mW rtd)
685nm: laser-in-a-box by Atomic (30.4mW pk|29.3mW avg) | 501B by Atomic (32.4mW avg)
780nm: module (2.7mW avg|5mW rtd)
808nm: Classic modded from a 532nm (162mW avg)
850nm: module (8.8mW avg|7mW rtd)
980nm: NewWish (81mW pk|5mW rtd) | 2nd line around 490nm

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Old 12-12-2012, 07:23 PM #27
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Default Re: OpenLPM - The free, open-source LPM project!

Right, forgot about that detail. It would also be cheap enough to buy the OPA circuit parts in bulk and solder it all together as well, it's just the IC, a couple set resistors and a filtering cap. Easily possible to do all that for under 40$ (if the pre-painted TEC's are suitable for this). Heck, it would be easy enough to add a 14-bit ADC in there as well. Just add the 30$ Arduino and that's a full LPM with datalogging for under 80$.

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Old 12-12-2012, 07:44 PM #28
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Default Re: OpenLPM - The free, open-source LPM project!

How about a $3 breadboard and a $10 Arduino Nano? That way everyone can change the layout/components if they want to. The 14-bit ADC would be absolutely great!
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Old 12-12-2012, 07:58 PM #29
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Default Re: OpenLPM - The free, open-source LPM project!

Quote:
Originally Posted by Atomicrox View Post
How about a $3 breadboard and a $10 Arduino Nano? That way everyone can change the layout/components if they want to. The 14-bit ADC would be absolutely great!
The knockoff Arduinos have always... been unappealing to me haha. But it definitely a REALLY cheap option.

Regarding datalogging, I've already written Luminosity, its successor Luminosity 2.0 (which was licensed as Radiant Lightspeed), and started to work on Peregine. I think for the purposes of OpenLPM I think I'm going to try to get Peregrine finished. Peregrine's going to be open-source, so contribution is welcomed.

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Old 12-12-2012, 08:20 PM #30
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Default Re: OpenLPM - The free, open-source LPM project!

Well, I think it's important to support the folks over at Arduino, but I guess it could be done with the knock offs to save costs. The quality of those looks... questionable.

It would definitely be easy enough to buy all the parts in through hole format for breadboarding, but the cheaper ADC's only come in SMD, so a SOT adapter would have to be made. I actually like this idea a lot more since it is in the spirit of Open LPM A modifiable open source LPM platform.
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Old 12-12-2012, 09:19 PM #31
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Default Re: OpenLPM - The free, open-source LPM project!

I think it might be neater/easier to design a shield PCB since this is going to be used with arduinos. I wouldn't really want my LPM to be breadboarded since its kinda big, messy, and easy to break that way.

I can do a board layout if you want?
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Old 12-12-2012, 09:36 PM #32
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Default Re: OpenLPM - The free, open-source LPM project!

Already done that
I've made a few revisions. This is one with a character LCD. I'm making it for another member here, I thought it would make a fun project.

I have other boards with just the ADC and some other components for Ophir heads, and others with an OPA for TEC LPM's. They need further testing before I can release them open source.


(Please excuse my lack of ribbon cable, I need to rip apart more computers to replenish my stock )
The SMD revision is on the way for this one. I like to use through holes for first revisions, easier to trouble shoot.

Last edited by ARG; 12-12-2012 at 09:41 PM.
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