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'[EE]: Re: [AR] Horizon sensor'
2001\09\18@094647 by Russell McMahon

picon face
//
Could you please send me the part number for the retina chip.  Also, you
said the data sheets are on the web, could you tell me where (if the info is
readily available, if not then don't bother looking).
//

The artificial retina chip in the gameboy camera is the Mitsubishi M64283FP.
This is a 128 x 128 pixel device, runs off 5v at 3 mA and has inbuilt
rudimentary signal processing modes which include
- Positive / negative image
- Edge enhancement & edge extraction
- Vertical/Horizontal projection extractuon

The device can be random accessed.
The output is a serial analog data stream, requiring A2D conversion if to be
used by a microprocessor.

I have a 36 page dfata sheet in PDF form (333 kB).
I am happy to send it to anyone who wants it or you could search for it .

However, there are numerous sites dealing with technical modifications to
gameboys and peripheralls and chances are you will find a copy there along
with much other material.

Here are a few links to start with which were current in December 1999 -


fly.hiwaay.net/~jfrohwei/gameboy/home.html
http://home.hiwaay.net/~jfrohwei/gameboy/
minyos.its.rmit.edu.au/~s9906768/pic/proj_gbc.html
http://pages.zoom.co.uk/andyc/camera.htm
http://www.devrs.com/gb/
http://www.games2learn.com/Hunger.asp
www.geocities.com/CapeCanaveral/9392/gameboy.html
www.geocities.com/SiliconValley/Park/1302/gbcam.html
www.geocities.com/SiliconValley/Park/1302/gbcam.html
http://www.lh.co.nz/hardware/ar/techinfo.htm


       regards


               Russell McMahon

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2001\09\20@081444 by jeethur

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face
Russel,

I too was quite interested in the artificial retina chips and I had
downloaded
the datasheet for the Mitsubishi M64283FP. But I could not get this sensor
anywhere in my country (India). Mr Bala Chandar, another PicList member from
India had also searched for these sensors, but could not find em.

Could you please tell me about the availability of this chip and its
approximate
cost ?

TIA,

Jeethu Rao

> {Original Message removed}

2001\09\20@082903 by Russell McMahon

picon face
> I too was quite interested in the artificial retina chips and I had
> downloaded
> the datasheet for the Mitsubishi M64283FP. But I could not get this sensor
> anywhere in my country (India). Mr Bala Chandar, another PicList member
from
> India had also searched for these sensors, but could not find em.
>
> Could you please tell me about the availability of this chip and its
> approximate
> cost ?

The only source that I am personally aware of is in a plug in camera card
for the "Nintendo Gameboy" pocket games. These cards normally costs around
$US60 equivalent here I believe but are cheaper on special occasionally. The
card and gameboy combination provides a complete video camera and image
capture system - VERY limited capability.

At the price a modern USB or similar camera is probably better fro playing
with although you don;t get some of the features.

regards,


       Russell McMahon

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2001\09\20@223728 by Wade Carpenter

picon face
Hello!

If you are looking for the "M64282FP" chip, you are able to find that in the
Gameboy Camera. Availability is very poor, however, with ebay probably your
best chance:
search.ebay.com/search/search.dll?MfcISAPICommand=GetResult&ht=1&Sort
Property=MetaEndSort&query=gameboy+camera

I purchased one recently for $20 in Canadian funds (Approx $1.60 CND per
$US) from a nearby video game store. It was used.

If you want to remove the chip from the unit, be forewarned - The screws
holding everything together are quite strange!  You will need a special
Y-shaped screwedriver with a very small dimension, as the screws are of the
'security' or 'tamper-proof' type.

Information on the system:
http://home.earthlink.net/~apendragn/gbcam/
http://www.geocities.com/SiliconValley/Park/1302/gbcam.html

and on the Mitsubishi chip:
http://www.lh.co.nz/hardware/ar/techinfo.htm

It has some nice features as I'm sure you may be aware, including
line-detection in the images.  These features run in parallel with the image
acquisition, so you are able to get up to ~ 30fps I believe.

I wrote some PIC code (in cc5x 'C') to send the appropriate control signals,
and to excite the analog response signals if you are interested in that.
The only thing is, since it's on the PIC and since the camera wants to run
at 500khz I had to change some of the registers because I'm only clocking
the thing at approx. 200khz running my 13 MHz PIC16F876.

I'm not sure about the differences with the M64282FP and the M64283FP, but I
think the one you mentioned may be a 32x32? and this one is 128x128.

Well, I hope that helps.  If there's anything else, I'll probably have dealt
with those issues as well.  Currently in the middle of applying this to a
project!

Regards,

Wade Carpenter
{Original Message removed}

2001\09\21@110242 by miked

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Walmart was selling them for $9.95 a while back.
{Quote hidden}

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