Over the Christmas period I had a chunk of time off, and so of course I filled it with many more things I'd like to do than I really had the time or energy for. One of these was to play with one of my Christmas gifts, a NoIR camera for my Raspberry Pi.
Last week I wrote about building a pan and tilt webcam, and at the end of that I mentioned that the next thing was to come up with some kind of software control on the PC to allow it to be easily moved around.
A long time ago I built a little pan and tilt mount from some scavenged electronics (a stepper motor from a printer and a worm drive from a cd player) I connected it via a parallel port and used darlington arrays and direct pin out of the parallel port to control the whole thing from some script language, I forget which. It was a little unreliable and fairly cumbersome but it got the job done.