EmbeddedRelated.com
Forums

reading ccd

Started by Francois Rigaud October 21, 2003
Hello,

I'm looking samples about
reading a linear CCD with ATMEGA

- linear 1024 or 2048 pixel
- 8-10 bits

with the smalest (if possible) electronics part/ circuit

Somebody help me?

Thank's
Franis



Hi Francois ,
Im searching for the same solution . I have bought some surplus
barcode scanners with little defects , but with the eletronics
functioning . They have TCD1200D from toshiba inside and Im trying
to put it to function with no success . What is the manufaturer of
the CCD you are going to use ?
Jeronimo --- In avrclub@avrc..., Francois Rigaud
<Francois.Rigaud@o...> wrote:
> Hello,
>
> I'm looking samples about
> reading a linear CCD with ATMEGA
>
> - linear 1024 or 2048 pixel
> - 8-10 bits
>
> with the smalest (if possible) electronics part/ circuit
>
> Somebody help me?
>
> Thank's
> Franis




Hello Jeromino
> Subject: Re: reading ccd


> functioning . They have TCD1200D from toshiba inside and Im trying
> to put it to function with no success . What is the manufaturer of
> the CCD you are going to use ?
> Jeronimo

I'm thanking i progress,

It's mabe be possible with hamamatsu s8377 or s8379 series

CMOS with amplifier, only 5V, only one clock 0.1 to 500 KHz 8 pins
and large spectral range

Perhaps it very simple.

A test with E-lab (pascal scm) simulator
take 260 Hz (3.8 ms) for a scan of 756 pixel/10 bits on mega32 16 MHz
756 pixel because there are not enought memory on mega 32 (2MO)

it's possible to buy CCD with 256,512 or 1024 pixel
or to acquire CCD with only 8 bits witdh

>> ADCchans = 1, iData;
>> ADCpresc = 2;
>> var img:array [1..756] of word;
>> .......
>> for i:=1 to 756 do img[i]:=Getadc(); EndFor;


maybe the CCD clock are making by pin/software
or
the CCD clock are making by chip divider with CPU clock
in this case, a syncro are need between soft and CCD clock

(making the clock with pwm are too slow and not adjutable)

if y take good luke, if testing this rapidly (1 month) with very
small circuit and part

>> TCD1200D: not datasheet found
what do you want making?

Franis



Francois ,
When I first saw the scanner I visualized a linear robot's eye .
capable of perceiving the environment near . But I am stuck without
any application guide for the chip or circuit that could guide me .
The original scanner uses only two chips , directly connected to
near all eletronic parts present inside of it .
Jeronimo.

--- In avrclub@avrc..., Francois Rigaud
<Francois.Rigaud@o...> wrote:
> Hello Jeromino
> > Subject: Re: reading ccd > > functioning . They have TCD1200D from toshiba inside and Im
trying
> > to put it to function with no success . What is the manufaturer
of
> > the CCD you are going to use ?
> > Jeronimo
>
> I'm thanking i progress,
>
> It's mabe be possible with hamamatsu s8377 or s8379 series
>
> CMOS with amplifier, only 5V, only one clock 0.1 to 500 KHz 8 pins
> and large spectral range
>
> Perhaps it very simple.
>
> A test with E-lab (pascal scm) simulator
> take 260 Hz (3.8 ms) for a scan of 756 pixel/10 bits on mega32
16 MHz
> 756 pixel because there are not enought memory on mega 32 (2MO)
>
> it's possible to buy CCD with 256,512 or 1024 pixel
> or to acquire CCD with only 8 bits witdh
>
> >> ADCchans = 1, iData;
> >> ADCpresc = 2;
> >> var img:array [1..756] of word;
> >> .......
> >> for i:=1 to 756 do img[i]:=Getadc(); EndFor; > maybe the CCD clock are making by pin/software
> or
> the CCD clock are making by chip divider with CPU clock
> in this case, a syncro are need between soft and CCD clock

>
> (making the clock with pwm are too slow and not adjutable)
>
> if y take good luke, if testing this rapidly (1 month) with very
> small circuit and part
>
> >> TCD1200D: not datasheet found
> what do you want making?
>
> Franis




Hi,
I am new to the group. But I am also interested in Astrophotography. We use
CCD chips as cameras on the telescope. Now, they are not avr controlled. But
there is enough information on how to read a ccd chip. I think there are
prints on line.

http://www.genesis16.net/
http://members.tripod.com/jhills/
http://www.astrosurf.com/audine/English/index_en.htm

JoeT

-----Original Message-----
From: jeronimoavelar [mailto:jeronimoavelar@jero...]
Sent: Thursday, October 23, 2003 12:10 PM
To: avrclub@avrc...
Subject: [AVR club] Re: reading ccd Francois ,
When I first saw the scanner I visualized a linear robot's eye .
capable of perceiving the environment near . But I am stuck without
any application guide for the chip or circuit that could guide me .
The original scanner uses only two chips , directly connected to
near all eletronic parts present inside of it .
Jeronimo.

--- In avrclub@avrc..., Francois Rigaud
<Francois.Rigaud@o...> wrote:
> Hello Jeromino
> > Subject: Re: reading ccd > > functioning . They have TCD1200D from toshiba inside and Im
trying
> > to put it to function with no success . What is the manufaturer
of
> > the CCD you are going to use ?
> > Jeronimo
>
> I'm thanking i progress,
>
> It's mabe be possible with hamamatsu s8377 or s8379 series
>
> CMOS with amplifier, only 5V, only one clock 0.1 to 500 KHz 8 pins
> and large spectral range
>
> Perhaps it very simple.
>
> A test with E-lab (pascal scm) simulator
> take 260 Hz (3.8 ms) for a scan of 756 pixel/10 bits on mega32
16 MHz
> 756 pixel because there are not enought memory on mega 32 (2MO)
>
> it's possible to buy CCD with 256,512 or 1024 pixel
> or to acquire CCD with only 8 bits witdh
>
> >> ADCchans = 1, iData;
> >> ADCpresc = 2;
> >> var img:array [1..756] of word;
> >> .......
> >> for i:=1 to 756 do img[i]:=Getadc(); EndFor; > maybe the CCD clock are making by pin/software
> or
> the CCD clock are making by chip divider with CPU clock
> in this case, a syncro are need between soft and CCD clock

>
> (making the clock with pwm are too slow and not adjutable)
>
> if y take good luke, if testing this rapidly (1 month) with very
> small circuit and part
>
> >> TCD1200D: not datasheet found
> what do you want making?
>
> Franis
To unsubscribe from this group, send an email to:
avrclub-unsubscribe@avrc...
">http://docs.yahoo.com/info/terms/



Hello

> From: "jeronimoavelar" <jeronimoavelar@jero...>
> Subject: Re: reading ccd

> When I first saw the scanner I visualized a linear robot's eye .
> capable of perceiving the environment near . But I am stuck without
> any application guide for the chip or circuit that could guide me .
> The original scanner uses only two chips , directly connected to
> near all eletronic parts present inside of it .
> Jeronimo.
You want only use TCD1200D, nothing all? Sorry, I'm French an i have
some difficult to understand.

> From: "JoeT" <joet@joet...>

> I am new to the group. But I am also interested in Astrophotography. We use
> CCD chips as cameras on the telescope. Now, they are not avr controlled. But
> there is enough information on how to read a ccd chip. I think there are
> prints on line.
Thank's JoeT

Franis