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gnabgib
sage
*****

Reged: 06/05/05

Loc: Fall River MIlls Ca.
Re: QUANTIX HELP......... new [Re: kw6562]
      #4636429 - 06/13/11 12:31 AM

Keith;
Just to clarify you stated the camera shutter circuit will drive this shutter? Also could you please provide a few dimensions of this shutter, the Surplus Shed site gives dimensions mounted on a plate! This looks promising.

Kevin


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gnabgib
sage
*****

Reged: 06/05/05

Loc: Fall River MIlls Ca.
Re: QUANTIX HELP......... new [Re: gnabgib]
      #4636432 - 06/13/11 12:37 AM

I have been operating this camera using a T30 thinkpad attached to a docking unit that has a half length PCI slot.
So far this has proven to be fairly robust with no issues.
Image download times are 8 seconds using 1x1 binning. Running Windows XP.

Kevin


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shurik
super member


Reged: 10/07/07

Re: QUANTIX HELP......... new [Re: gnabgib]
      #4636541 - 06/13/11 03:53 AM

Kevin can you please post a picture of how does PCI card fit into that slot of your thinkpad, this might be by far the easiest solution, there are plenty of docking stations on ebay that have this slot, I thought was not going to work , but apparently I am glad I was wrong )

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gnabgib
sage
*****

Reged: 06/05/05

Loc: Fall River MIlls Ca.
Re: QUANTIX HELP......... new [Re: shurik]
      #4637069 - 06/13/11 01:35 PM Attachment (42 downloads)

Quote:

Kevin can you please post a picture of how does PCI card fit into that slot of your thinkpad, this might be by far the easiest solution, there are plenty of docking stations on ebay that have this slot, I thought was not going to work , but apparently I am glad I was wrong )




Here are a few picts of my thinkpad setup. Hope they help.

Kevin


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gnabgib
sage
*****

Reged: 06/05/05

Loc: Fall River MIlls Ca.
Re: QUANTIX HELP......... new [Re: gnabgib]
      #4637072 - 06/13/11 01:36 PM Attachment (46 downloads)

Dock 2

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gnabgib
sage
*****

Reged: 06/05/05

Loc: Fall River MIlls Ca.
Re: QUANTIX HELP......... new [Re: gnabgib]
      #4637075 - 06/13/11 01:37 PM Attachment (48 downloads)

Quantix card installed in dock

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gnabgib
sage
*****

Reged: 06/05/05

Loc: Fall River MIlls Ca.
Re: QUANTIX HELP......... new [Re: gnabgib]
      #4637076 - 06/13/11 01:39 PM Attachment (37 downloads)

MY dock's specs. Make sure of your own laptops spec as there are quite a few versions of docking stations available for our different laptops!

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macona
super member
*****

Reged: 05/18/11

Loc: Beaverton, OR
Re: QUANTIX HELP......... new [Re: gnabgib]
      #4637206 - 06/13/11 03:25 PM

The docking station may be the way to go price wise. A t30 laptop sells for something like $150 on ebay. I do have a Dell PIII lappie at home. I think I saw the docking station for it on craiglist for about $40. That ought to do it and the screen on the dell is real nice and high res.

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shurik
super member


Reged: 10/07/07

Re: QUANTIX HELP......... new [Re: macona]
      #4637815 - 06/13/11 11:35 PM

I think Dock station/resurrected laptop will be the way to go , but I also found this

http://www.arstech.com/item--ssi2_pci.html

they customer support s***ks (they want money if you wish to discuss this product or anything on the phone), but it could be the way to go too...need comp geek to look at these components if it makes sense..


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macona
super member
*****

Reged: 05/18/11

Loc: Beaverton, OR
Re: QUANTIX HELP......... new [Re: shurik]
      #4637832 - 06/13/11 11:47 PM

I forgot all about the arstech cards. I have a couple of the ISA versions at work from the last film. Dont know what they were trying to do with them.

The PCI ought to work, but I think they will be pretty darn slow. For the price of that I can pick up a Thinkpad T43 and docking station.

I got the Ilex shutter in today. Very nice and compact. But will not trigger off the internal connector. I think the high voltage pulse decays too fast for it to open. Odd since the Uniblitz specs a 70v pulse and hold at 5v.

But I can make it work, I believe. I can use the internal shutter driver to trigger a small circuit that will drive the Ilex shutter. The shutter has two micro switches inside it that activate when the shutter opens. It seems the shutter needs at least 24v to open and ~5v to hold. I can use the switches to change the voltage level once it is open. I will need a 24v source to operate it, I can get that though a DC/DC converter.

The hole pattern is very odd. I will have to transfer and measure.


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shurik
super member


Reged: 10/07/07

Re: QUANTIX HELP......... new [Re: macona]
      #4637864 - 06/14/11 12:10 AM

"The PCI ought to work, but I think they will be pretty darn slow."

Why is that ? , I thought USB2.0 should be plenty , we are not doing any fast frame high resolution video transfer... am I missing it ?


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kw6562
Authoritative Ignoramus
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Reged: 06/25/08

Loc: MA
Re: QUANTIX HELP......... new [Re: macona]
      #4637876 - 06/14/11 12:15 AM Attachment (48 downloads)

Finished most of the shutter install tonight, still need to tweak a couple of things and it needs a light shield - but it works...Kevin, in response to your question the shutter operates directly from the camera, no interface circuit needed. When I get a chance I'll supply some dimensions, sorry its kind of late right now...

So here it is with the solenoid and linkage mounted on the flange:


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kw6562
Authoritative Ignoramus
*****

Reged: 06/25/08

Loc: MA
Re: QUANTIX HELP......... new [Re: kw6562]
      #4637880 - 06/14/11 12:16 AM Attachment (44 downloads)

And here it is on the camera.

Edited by kw6562 (06/14/11 12:17 AM)


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kw6562
Authoritative Ignoramus
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Reged: 06/25/08

Loc: MA
Re: QUANTIX HELP......... new [Re: kw6562]
      #4637902 - 06/14/11 12:29 AM Attachment (37 downloads)

And with the shutter open. Note that I had to sacrifice one of the screws for the solenoid, but I think three should be adequate. To be honest this is kind of a hack, although it does seem to work well. Normally I would plan things out better, but this was one of those "design-as-you-go" projects. If I were going to do this right, I would design a new flange that could accommodate the shutter without too much modification. But I can't wait to start using it!

Also tried out a 10m SCSI cable that I ordered through E-bay, no problems. Got lazy and decided not to incorporate a filter slide as I originally intended; bought a manual wheel and a 2" LRGB set instead. So a little bit more work and it should be ready to go. Clear skies --Keith


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macona
super member
*****

Reged: 05/18/11

Loc: Beaverton, OR
Re: QUANTIX HELP......... new [Re: shurik]
      #4637963 - 06/14/11 01:14 AM

Changing from one interface to another will develop latency. If the card needs direct memory access it will slow down. USB2 is 480Megabit/sec or 60Megabytes/sec, though I have never seen past 40. PCI is at the very least double that and often quadruple that.

That card is more money than I am willing to risk for a maybe. By the time you have the card+power supply+enclosure you are double an old laptop and on par with a mini-itx.


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gnabgib
sage
*****

Reged: 06/05/05

Loc: Fall River MIlls Ca.
Re: QUANTIX HELP......... new [Re: macona]
      #4639110 - 06/14/11 06:32 PM

Quote:

I forgot all about the arstech cards. I have a couple of the ISA versions at work from the last film. Dont know what they were trying to do with them.

The PCI ought to work, but I think they will be pretty darn slow. For the price of that I can pick up a Thinkpad T43 and docking station.

I got the Ilex shutter in today. Very nice and compact. But will not trigger off the internal connector. I think the high voltage pulse decays too fast for it to open. Odd since the Uniblitz specs a 70v pulse and hold at 5v.

But I can make it work, I believe. I can use the internal shutter driver to trigger a small circuit that will drive the Ilex shutter. The shutter has two micro switches inside it that activate when the shutter opens. It seems the shutter needs at least 24v to open and ~5v to hold. I can use the switches to change the voltage level once it is open. I will need a 24v source to operate it, I can get that though a DC/DC converter.

The hole pattern is very odd. I will have to transfer and measure.





Macona;
I have been playing with one of the Ilex shutters. I have installed a 7805 voltage regulator across one of the mico switches to provide the 5vdc "hold" voltage. I also put a 22mfd tant cap across the coil to smooth out the transition. In the camera I have a 5vdc relay switched by the shutter circuit (to "pulse" is to short to harm relay) to control the Ilex shutter. If you look at the large resistor next to the big cap (technical I know) it has 24vdc coming straight from power supply. (pins 11 and 12 on connector) This operates shutter quite well! The shutter use about 50 milliamps current to hold open and about 200 milliamps at 24v to fire. I just ordered one of the "other" shutters to see how well it might work. The seller on EBAY has "quite a few" available. By the way if you do not reduce the voltage the shutter trigger coil gets pretty hot after only a few minutes. At 5v hold it never warms up.

.02 worth
Kevin


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macona
super member
*****

Reged: 05/18/11

Loc: Beaverton, OR
Re: QUANTIX HELP......... new [Re: gnabgib]
      #4639270 - 06/14/11 08:21 PM

I am finding that the shutter opens much better with a 48v pulse, its kind of sluggish at 24v. I have found a little 5 to 12v input dc/dc power supply that is small enough to install in the shutter itself. It has a -24/24v output. Putting 330uf caps across the rails gives enough of a kick to open the shutter. Then 5v will hold it open.

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macona
super member
*****

Reged: 05/18/11

Loc: Beaverton, OR
Re: QUANTIX HELP......... new [Re: macona]
      #4639339 - 06/14/11 08:58 PM

Oh yeah, be sure to put a diode across the coil as well. Otherwise the back emf from the solenoid can kill the cap and you sure dont want that pulse getting back in to the camera circuitry.

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macona
super member
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Reged: 05/18/11

Loc: Beaverton, OR
Re: QUANTIX HELP......... new [Re: macona]
      #4640392 - 06/15/11 01:56 PM

I sent a message to Craig over at Stark Labs about getting PVCAM support in Nebulosity. He says he needs a loaner camera to program with. So I put a bid on one of the lower res quantix cameras on ebay.

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macona
super member
*****

Reged: 05/18/11

Loc: Beaverton, OR
Re: QUANTIX HELP......... new [Re: macona]
      #4641273 - 06/15/11 11:55 PM

I ordered a little 3 watt DC/DC converter. It gives me 24, 48,and 72volts out with 5v in. Small enough to fit in the empty space of the shutter housing. I will use this to charge a capacitor which will give the initial drive pulse, then like Kevin, I will use 5 v to hold it open triggered with one of the microswitches. I plan on tapping off the 5v line feeding the fan. Basically make a Y splitter with the same molex connectors. I have a bunch left over from building my laser cutter. This will allow me to not modify the circuit board. The dc/dc converter is about $15.

Just got back from picking up a Thinkpad T43 off Craigslist. 1.86Ghz, 1G ram, 80G hard drive, bluetooth, wifi, 1400x1050 screen, $120. A dock is about $25 shipped off ebay.


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