Long Exposure modification for the 1004x
ExView CCTV board camera.
Copyright (c) 2002 Jon Grove
I am indebted to Steve Chambers for his suggestions, experiments and general help in realising this project. Thanks also to Dr Steve Wainwright for his enthusiastic support and encouragement, and to QCUIAG for providing a forum for discussing ideas and presenting results.
Note:

The modifications described on these pages are the result of much experimentation, investigation and plain hard work. I am making these details available to other enthusiasts, on the understanding that:

1.     I accept no responsibility for injury or damage to equipment caused by following, or attempting to follow, the instructions presented here.

2.     Whilst I have made every effort to ensure that the information presented is accurate, I cannot offer any guarantees concerning its correctness or suitability for any purpose. If you discover any errors, please
email me.

3.     The information presented is not to be used for financial or material gain without my express permission.

4.     These pages are Copyright (c) 2002 Jon Grove. You may link to them from other Web pages if you wish, but you may not reproduce or copy them in whole or in part, other than as a single private copy for reference purposes.
OK, that's the boring bit over with. Let's get on with the exciting stuff!
Equipment You Will Need:

A 1004X (or 1004XA) camera. These are available in the UK from
RF Concepts.They also supply a cased version, but I believe the PCB layout is slightly different. The XA version has a small audio daughterboard attached, which is not relevant to this modification and can be used as-is or dispensed with.

Solder and a fine-tipped soldering iron. Some of the components have pins with a 0.5mm pitch.

A magnifier of some sort. Possibly one of those things with a lens and some crocodile clips to hold your work would be useful. A powerful hand lens is really useful, essential even, for inspecting your work and looking for bad joints or solder bridges.
Components etc.
                                                                                                                         
Maplin code
3 x 12V subminiature SPCO relay                                                                             UG42V
1 x SN7406 hex O/C inverter                                                                                   QX75S
4 x small diode. I used 1N4148, Maplin don't seem to stock them. Try 1N4001.            QL73Q      
1 x 10K resistor                                                                                                       M10K
1 x 0.1uF polyester capacitor                                                                                    BX76H
Piece of stripboard about 2"x2", maybe a bit bigger to be on the safe side.                     FL17T
Some ribbon cable for connecting the daughterboard to the camera PCB. At least 7-way, possibly 10-way.
Connector of your choice for connecting to the PC. Needs to be able to carry the following signals:
+12V power to camera
Ground
Video output
4 data lines from parallel port

Note that I used bits that I had lying around for some of the above. I am assuming that if you are going to tackle this project you have some experience of electronic assembly and are capable of laying out the circuit on whatever piece of stripboard you may have, or designing your own PCB.

I also found it convenient to use a plug/socket to connect the daughterboard to the camera. I used a DIL IC socket cut in half lengthwise which made both a plug and a socket, but not all socket types will be useable. A 10-way IDC ribbon cable connector would do instead, or you can get away with 7-way if you use the 3-way power/video/ground connector on the camera PCB as well.
The Next Step
Circuit diagram...
Doing the mod...
Software...
iCatch...
AVIDark...
iMerge...
1004x Related Links

If you have any suggestions for links to add here, please
email me!

Steve Chambers' USB capture
Robin Leadbeater's site
Dave Molyneaux's site