[DIYbio] Re: Nanodrop Spectrophotometer Take Apart?

Here's an updated link to the pics! (please feel free to browse the
site otherwise and give me feedback on it, my friends and I just
launched it)
https://www.takeitapart.com/guide/66


(p.s. in case anyone wants to author a disassembly guide, use this
sign-up code to get in (good for 50 users:
carefully-press-its-right-panel-QJCND-diybio)

On Tue, Jan 26, 2010 at 4:08 PM, Nathan McCorkle <nmz787@gmail.com> wrote:
> It would probably be better to use an actual linear array, coupled
> with a grating or prism. Add a peltier below the sensor for cooling
> and you'd have a fine piece of equipment... mind the optics, good
> optics especially for UV (even the upper range) can be expensive. And
> then you have to focus everything...
>
> I'm down to lend my mind to such a cause
>
> On Tue, Jan 26, 2010 at 2:20 PM, Mackenzie Cowell <mac@diybio.org> wrote:
>> Probably just a cheap solenoid, right?
>> Man, I can't believe that commodity spectrophotometer is $2639 (maybe
>> nanodrop gets a deal?). Nathan included a link to it. From the
>> description, it sounds like it uses basically the same principle Simon uses
>> with his DIY-spectrograph setup: A linear CCD in which different frequencies
>> correspond to different columns of pixels. So it gives me hope we could
>> build a similar spec with the guts of an off-the-shelf digital camera.
>> Their description: http://www.oceanoptics.com/products/usb2000.asp
>> "The USB2000 couples a low-cost, high-performance 2048-element linear
>> CCD-array detector with an optical bench that's small enough to fit into the
>> palm of your hand -- the same detector and optical bench that have provided
>> superior performance to the users of our 15,000 systems out in the field.
>> The USB2000 also works the same way as other Ocean Optics spectrometers in
>> that it accepts light energy transmitted through single-strand optical fiber
>> and disperses it via a fixed grating across the linear CCD array detector,
>> which is responsive from 200-1100 nm."
>> Mac
>>
>> On Mon, Jan 25, 2010 at 11:40 PM, Nathan McCorkle <nmz787@gmail.com> wrote:
>>>
>>> Yeah I forgot to get a good photo of the magnet device, but that is
>>> what pulls the ND1000 arm down...
>>>
>>> On Mon, Jan 25, 2010 at 8:39 AM, Cathal Garvey <cathalgarvey@gmail.com>
>>> wrote:
>>> > Yea, judging by the sounds our nanodrop makes in the lab I believe the
>>> > arm
>>> > is moved by a small electromagnet against a spring, rather than a servo.
>>> >
>>> > I reckon if you can find LEDs of the three wavelengths required, you
>>> > could
>>> > actually hack one of these together using just your LEDs and an arduino.
>>> > LEDs can be used as sensors of their own wavelength and below, so with
>>> > some
>>> > basic subtractive math and careful tuning, you shouldn't need much more
>>> > than
>>> > that, right?
>>> >
>>> > 2010/1/24 Nathan McCorkle <nmz787@gmail.com>
>>> >>
>>> >> Ok, so I took apart the 1000ND, not the 2000... so there is no motor,
>>> >> and for a hint on how they literally "hacked" this together, compare
>>> >> the CCD specs between your link and this one:
>>> >> http://www.oceanoptics.com/products/usb2000.asp
>>> >>
>>> >> Isn't the Nanodrop USB out??? :P
>>> >>
>>> >> Editing the pics now, will post soon!
>>> >>
>>> >> On Sun, Jan 24, 2010 at 11:39 AM, Tito Jankowski
>>> >> <titojankowski@gmail.com> wrote:
>>> >> > Judging by the spec sheet, here's my guess. There is a xenon lamp (I
>>> >> > think
>>> >> > these are the size of your pinkie finger) and a CCD hooked up to a
>>> >> > optical
>>> >> > cable (I imagine this would be no bigger than 2"x3"x1"), plus a
>>> >> > microcontroller for the raw data, a little motor for the jaw/arm and
>>> >> > a
>>> >> > power
>>> >> > supply for it all. My guess is this takes up most of the casing.
>>> >> > Lastly,
>>> >> > there are patents on the sample retention system, which really does
>>> >> > rock.
>>> >> >
>>> >> > Wonder why they used a xenon lamp?
>>> >> >
>>> >> > http://www.nanodrop.com/Productnd2000specs.aspx
>>> >> >
>>> >> > --
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>>> >> >
>>> >>
>>> >>
>>> >>
>>> >> --
>>> >> Nathan McCorkle
>>> >> Rochester Institute of Technology
>>> >> College of Science, Biotechnology/Bioinformatics
>>> >>
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>>> >
>>> >
>>> >
>>> > --
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>>> > twitter.com/onetruecathal
>>> >
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>>>
>>>
>>> --
>>> Nathan McCorkle
>>> Rochester Institute of Technology
>>> College of Science, Biotechnology/Bioinformatics
>>>
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>>
>>
>>
>> --
>> +1.231.313.9062 / mac@diybio.org / @100ideas
>>
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>
>
>
> --
> Nathan McCorkle
> Rochester Institute of Technology
> College of Science, Biotechnology/Bioinformatics



--
-Nathan

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