[sudo-discuss] DXF or SVG or? for scanner light fixture mount cutting for book scanner

[robb]

good for solar panels 2
:)

On Fri, Jan 19, 2018 at 2:28 PM, robb <sf99er at gmail.com> wrote:

> i think they're on to something w/the double linear fresnel lenses
> <http://www.mdpi.com/1996-1073/10/12/2091/htm>
> looks like it can hit 2 dimensions uniformly
>
> On Fri, Jan 19, 2018 at 1:44 PM, <hol at gaskill.com> wrote:
>
>> Just looked at the instructions - are we overthinking how to illuminate a
>> piece of paper?  Could easily use an aluminum channel with white LED strip
>> to do same task.  Happy to bring these materials next tues.
>>
>> On 2018-01-18 22:37, jacques revera wrote:
>>
>> probably less than a square foot or half of that. depends on how we
>> remake the piece holding the light to raise it higher
>>
>> On Thu, Jan 18, 2018 at 10:23 PM, Jake <jake at spaz.org> wrote:
>>
>>> i have plenty of FR4 that does have copper on it, we could still use it
>>> for
>>> this.  how much do we need?
>>>
>>>
>>> On Thu, 18 Jan 2018, Marc Juul wrote:
>>>
>>> Nice! I'm not sure we have any non-circuitboard FR4. If it's not too big
>>>> we
>>>> could just order it from e.g. seeedfusion as a circuitboard design with
>>>> no
>>>> exposed copper pads.
>>>>
>>>> On Thu, Jan 18, 2018 at 1:54 PM, jacques revera <
>>>> jacquesrevera at gmail.com>
>>>> wrote:
>>>>
>>>> I just purchased two refurbished 20 megapixel Canon PowerShot ELPH 160
>>>>> and
>>>>> the archivist lighting assembly which includes LED bulbs, sockets,
>>>>> lenses,
>>>>> wiring and power adapter.
>>>>>
>>>>> Jonathon will send us the design files for the sockets mounting plate
>>>>> soon
>>>>> as I tell him what format we need to cut it at the SUDO room: DXF or
>>>>> SVG or
>>>>> something else?
>>>>>
>>>>> ~
>>>>>
>>>>> http://diybookscanner.org/archivist/index6ea9.html?page_id=267
>>>>> This is the page describing the plate. It would be convenient if the
>>>>> SUDO
>>>>> room has some FR4 but as long as the material is opaque, heat proof
>>>>> and can
>>>>> be painted black, should be no problem.
>>>>>
>>>>> This plate will sit at the top center of the scanner. The plate also
>>>>> serves to block light from entering from the top direction. Since, we
>>>>> need
>>>>> to attach something to raise the lights higher than the original
>>>>> hackerspace design, we should not cut this out yet. It does not need
>>>>> to be
>>>>> the same shape as the archivist plate as long as the socket mounting
>>>>> holes
>>>>> are the same.
>>>>>
>>>>> Jonathon wrote last week:
>>>>> ."..you can move the lights further away from the platen. Because of
>>>>> various design constraints, Daniel put the lights closer to the platen
>>>>> than
>>>>> is ideal on that model. For later models (like Daniel's Archivist
>>>>> design),
>>>>> the lights were been moved further away to reduce glare and hot spots.
>>>>> You
>>>>> want to reproduce this in some way. So just build a simple frame you
>>>>> can
>>>>> set on top of the scanner to lift the lights. There is a mathematical
>>>>> way
>>>>> to find the minimum distance, but it might be easiest just to do it
>>>>> empirically, pulling the lights away and taking sample photos until
>>>>> you see
>>>>> that there is no reflected light source."
>>>>>
>>>>> You can see how this the lights are put together on the archivist about
>>>>> halfway down this page
>>>>> http://diybookscanner.org/archivist/index9bef.html?page_id=54
>>>>>
>>>>> Jacques
>>>>>
>>>>> _______________________________________________
>>>>> sudo-discuss mailing list
>>>>> sudo-discuss at lists.sudoroom.org
>>>>> https://sudoroom.org/lists/listinfo/sudo-discuss
>>>>>
>>>>>
>>>>>
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>
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