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Re: Microneye software, where?
On Fri, 21 Nov 2008, zzjoki@gmail.com wrote:
On Nov 14, 6:11 pm, "Michael J. Mahon" <mjma...@aol.com> wrote:
Toinet wrote:
Dear All,
I own a Microneye camera but I lack its software. I would like to know
whether some of you could provide me with a link to download it.
A search among the archive of csa2 brought me to several threads and
links but all return in error.
I thank you in advance for your help.
Wasn't that the de-capped DRAM chip adapted for use as a camera
(from back when CCDs were very expensive)?
Circuit Cellar (Byte Magazine) ran an article on it, IIRC, but
the principle should be:
1. Write all 1's (or all 0's) to the DRAM,
2. Wait for the desired exposure time,
3. Read back the DRAM--any differences are proportional
to the received illumination.
The relationship between address and the image geometry
will need to be determined empirically.
-michael
******** Note new website URL ********
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Yep, it's a de-capped RAM chip. Wouldn't there be a threshold per bit
- no "proportional"? Or maybe you could scan at different exposure
times to assemble a gray scale image.
Does anyone know if capped non-Micron RAM chips also be used this way?
(I've got a box of "iffy" capped RAM chips)
Just after the Altair 8800 was in Popular Electrnics, Roger Melen and
Harry Garland had a simple digital camera in the same magazine. I can't
remember the name, but apparently it was originally more standalone
and then was reworked after the Altair came out so it could be
interfaced to the bus. It used a RAM IC, and was very low resolution.
There were various other articles in the magazines about doing the same
thing.
Some attempts at such things with a "special part" seemed likely to be
someone doing some presorting, using RAM, getting the top off, and
making sure it worked.
ANd that was a key thing, that one in PE used an IC that came in a ceramic
and metal package, so the chip was accessible by pulling the metal off.
It was still common at that point, we're talking something like a 256bit
RAM.
Later RAM becomes problematic because one has to grind plastic to expose
the chip.
Michael