I got one of those keyfob cameras. Works pretty good . Got it on ebay for about $15, uses a small card, so easy to load into your computer. I just stuck it on top with some yellow tack stuff or tape. Have not used it in a while. Used to be quite a bit written up on line a year or two ago. This is the one I got, read the reviews to get good instructions.
http://www.amazon.com/808-Car-Chain-Camera-Recorder/dp/B00849KQD0
Here’s some a buddy gave me:
There are 4 buttons, only 2 do anything. Of these two that work there’s the one closest to the edge, and the one more inward, towards center.
I press the inward button to turn it on. This will make the light turn on and stay on.
To record video I hold the edge button for a few seconds. 50% of the time it will blink three times and then go out. 50% of the time it stays lit during the few seconds, then when I let go, it blinks three times and then goes out. I don’t know what causes either to happen, I’m just learning to live with that. If it doesn’t blink 3 times and go out, then you took a JPEG picture instead of starting video. Try it again.
The light should be off - following 3 blinks - to be in video mode. It is a “spy” camera and if you were recording someone secretly you wouldn’t want some obvious light shining at them. “Hey, why is your key chain lit up like that?”
Here’s one thing I do that I think is different from the instructions. To stop recording video I press and hold the power button (the inward one). This will bring the light back on. I’m noticing the light stays on for a different amount of time, depending on how long I recorded. I suspect this is an activity light showing that it is writing to the memory. By pressing this button it turns the camera off, so to start recording again I have to start from scratch (back on, 3 blinks, etc).
I haven noticed that I get perhaps 30 minutes of record time on a full charge of the battery. I prefer to make multiple 5 minute recordings than try to push my luck. If you are recording and run out of power it will have a file on the memory card, but I can’t get it to be read by any program. I suspect it doesn’t get whatever file header/index is needed written out properly as it is like a temp file only.
Two other tips for using it on the trains. One is that I painted the rear end of mine bright yellow. On my RR if it falls off it is darn hard to find hiding under a plant or mixed in with ballast. The yellow helps me to find it faster. The other tip is to use something to hold it in place. It get a lot of vibration with it on a car, or worse on an engine, picking up motor noise. And, my MOW department often lets plants grow over the tracks, easily sweeping the camera off. I bought some of this sticky tack stuff:
And these:
On to the operation of the camera:
the bottom 2 buttons are fake and for looks only
the top 2 control the camera and work as follows:
the lower of the 2 is the on and off button.
the upper takes still images or starts the video recording.
TO TAKE PICTURES:
Turn camera on by pushing and holding the lower button of the top group.
A amber light will show ---- simply push the top button every time you
want a still picture.
TO TAKE VIDEO
Turn camera on by pushing and holding the lower button of the top group.
A amber light will show ---- press and hold the top button until the
amber light flashes three times, the light will go out (spycam
remember:0) and you are recording vido – click the top button to stop
and auto save the vid.
TO RETRIEVE PICS / VIDS:
plug into an available usb and wait for the pc to read it and ask what
you would like to do – usually “open folder to view files”