Re: [PLOTS] 3d printing spectrometers

[Jeffrey Warren]

That's great -- making a new topic thread. There is a design up at Thingiverse (see thingiverse open source controversy, however) here:

http://www.thingiverse.com/thing:28100

by ChemistryDude. We're trying to do the "mobile phone attachment" on Kickstarter as an injection molded part, but before it ships there will be plenty of experimentation on 3d printers and I expect that 3d printing will always be a good way to refine, improve, & customize spectrometers. Fork and share, and post what you make!

Jeff

On Mon, Sep 24, 2012 at 3:35 PM, Javier Velasco <txa...@gmail.com> wrote:

I have a small CNC and i have knowledge of solidworks if we can reduce
the size as be as posible i could do a cheap piece
everybody could download or print in the 3d printer here:

www.shapeways.com

On Mon, Sep 24, 2012 at 8:40 PM, Jeffrey Warren
<je...@publiclaboratory.org> wrote:
> Hi, Javier - a lot of the parts we're working with are being listed here:
> http://publiclaboratory.org/wiki/countertop-spectrometer
>
> Jeff
>
>
> On Mon, Sep 24, 2012 at 6:41 AM, Javier Velasco <txa...@gmail.com> wrote:
>>
>> I think we could spend many time calibrating many cameras and in my
>> opinion its a great idea make a cheap spectrometer
>>
>> Could someone organize a group to identify all the hardware and pieces are
>> neccesary to assembly like an open hardware product
>>
>> ive found for example a usb camera here:
>> http://www.e-consystems.com/33mp_cameraboard_usb.asp
>>
>> I think we could desing a box around one model of camera in CAD and upload
>> to Shapeways
>> in this way we could offer a kit to assembly in pieces and prepare a more
>> relliable proyect with software etc.
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>> On Wednesday, September 12, 2012 3:37:49 PM UTC+2, stonefisher wrote:
>>>
>>> Hi, I saw the kickstarter project for making a spectrometer. Due to the
>>> import tax and not wanting to wait and having almost all the parts already,
>>> I thought I would make a countertop spectrometer right away. After looking
>>> around the public laboratory I have a few questions.
>>>
>>> 1. Why a dimable light? Does this not change the result?
>>> 2. Calibration of the spectrometer, do I calibrate it against a CFL bulb
>>> then switch to a halogen bulb for taking spectrums and if so how is this
>>> calibration when you are using a different light source?
>>> 3. How often do I need to calibrate the spectrometer? Eberytime I start
>>> using it or just when I am using a different type of sample container?
>>> 4. Are the spectrums taken by different people really comparable as
>>> everyone has different setups from light source to model of camera to
>>> manufacturer of the DVD used for the defraction grate?
>>> 5. I have found a sturdy broken periscope toy I plan to use to mount the
>>> camera in as it is easy to make a tight seal against light leakage and it
>>> has a mount for the mirror inside already at a 45 degree angle for the
>>> camera to be fixed on. I would however like to know what is the best size
>>> for the slit to let light in and how far to mount it as I can mount it upto
>>> 18 inchs from the camera.
>>>
>>> Oh and hello everybody.
>>>
>>>
>>> stonefisher
>>
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