Logitech Quickcam Pro 3000 Long Exposure Modification

Parts and Tools

A 15 watt soldering iron with the tip filed to the sharpest point you can manage.
Some radioshack switches. From left to right:

1 pushbutton momentary switch
1 pushbutton on/off switch
two SPST toggle switches
A 2x3x4 inch (give or take) project box for the camera enclosure. You can see that I already drilled some holes which will be explained as I go along.
A 1x2x3 inch project box for the remote exposure control.
I bought the enclosure project box from a used parts store and it came without a back, so I cut a back out of a piece of copper-plated circuitboard. You can see a hole cut in the middle to house the fan, and a notch cut in the end to let the USB cable through.
[Picture unavailable] The previous image shows the back as I designed it to house the original fan, a 1 inch square fan. I eventually replaced that fan with a slightly larger fan. This is how the back was modified to match.
A small piece of PC board (1 or 2 inches square will be more than enough).
A 14 pin integrated circuit socket.
4 15K resistors (they come in packs of 5)
[ No picture. Sorry. There is a picture of it inserted into the socket after the circuitry is completed later in the description. ] 1 4066 or 4016 (doesn't matter which) quad bilateral switch integrated circuit.
1 small 5 volt fan. This is the first fan I used, only 1 inch square. It was only .5 cfm however. I eventually replaced it with a larger fan.
1 small 5 volt fan. This is the first fan I used, only 1 inch square. It was only .5 cfm however. I eventually replaced it with a larger fan.

Other tools you will either need or want include:

  • a set of very small screwdrivers.
  • a small flashlight with a flexible neck that you can position (clip onto something solid) and then bend to point light where you want it.
  • a multimeter (a digital multimeter with an beeping continuity function is extremely helpful).
  • some tape (scotch tape is fine, electrical tape is better).
  • the smallest diameter solder you can find (do NOT use acid core solder, it'll destroy electronics. Use only rosin core. I used .022 62/36/2 silver-bearing solder.)
  • very very very small wire. I used 30 gauge I think. It was truly tiny stuff.
  • a reasonable length of shielded cable to go from the camera to the remote. You only need one line inside the shield. I cut up a pair of old headphones and used one of the two cables for this purpose.
  • An x-acto knife and blade set.
  • a variety of magnifying glasses. Telescope eyepieces looked through from the wrong end do quite nicely for really high power, but it's also nice to have an ordinary 3x lying around.
  • A glue gun; a small one preferably. This is the kind of glue gun that is often used to crafts projects. Several kinds of glue will probably work though.
  • Superglue (the hot glue from the glue gun doesn't stick very well to the plastic that ICs are made out of).

Next section:
Opening the Webcam and Familiarizing Yourself with the Treasures Therein