WeatherCat can work with a webcam in one of three ways:
- 1. A camera connected to your Mac, controlled by WeatherCat.
- 2. A camera managed by a third-party application. If the software can make the current image available as a file on disk, then WeatherCat can use the image.
- 3. A camera connected to a network that makes its image available via http:, normally as a .jpg, .png or .gif.
To set up the way WeatherCat gets the image form your webcam, go to Preferences->WebCam.
WeatherCat can use the webcam in the following ways:
- 1 To provide images in various size to your Simple  and Custom  web pages.
- 2 To provide time-lapse movies to your Custom web  pages.
- 3 To upload your webcam image to Wunderground .
- 4 To save images and movies to your hard-disk for further archival and/or editing. Images can be kept for up to 24 hours, movies for up to 7 days.
Images/movie frames can be captured at a maximum rate of once every 5 seconds.
- Logitec WebCam Pro 9000 
- Trixology uses a Logitec WebCam Pro 9000 mounted internally, directly controlled by WeatherCat. This camera has been in use for over two years 24/7/365 with not a single problem and runs over a 5m active USB extension cable (note the maximum length for USB as recommended by the USB.org is 5m ). The camera offers good value for money whilst being able to cope with the difficult task of capturing weather images in all conditions. It offers 2 megapixels physical resolution (sometimes advertised as 8 megapixels, but this is via interpolation) and a Carl Zeiss lens at a very reasonable price. As this is a UVC camera  , no drivers are required for Mac OS X.