JoeNeptune
I dont see where you set the time period for the interval.
Open the menu and navigate down to the "Interval" item, then press "MENU" until the "Time (s)" sub-item is displayed; use LEFT and RIGHT to change the value.
JoeNeptune
If the Display off switch turns off the scripts, then you cant use the viewfinder while they run and its easy to mistakenly turn it off.
The face detector no longer stops the scripts (code is already up in the repository, but binary has still not been released); now I use the DP button to stop the scripts.
JoeNeptune
If three hand waves are used to take pics, like I said when I came up with the idea of using the IR proximetry switch, it wont spook you by going off by itself. ( not wearing a red shirt helps too, lol).
Needing to hit a button before using the hand wave takes away the ability to use camera when your hands are dirty. Feeding a baby and many other nature shots require getting dirty.
Any kind of "magic" detection we implement will be, sooner or later, either too hard or too easy to trigger for someone; I prefer a more "explicit" approach:
As I wrote in a previous post, the Wave script can now run continuously (again, code is already up in the repository, but binary has still not been released); so you only need to have your hands clean while you set up the camera and fire the Wave script. The only difference from the previous implementation is that you have to press the DP button (once) to start the script; then you can wave your hand (once) for each shot, as may times as you want.
Is this acceptable?
JoeNeptune
While the mirror is locked up, I wonder if it will allow motion detection or live preview?
No: AFAIK the sensor on the 400D does not allow for live preview (and motion detection depends on live preview, if I am not mistaken); the hardware is just not ready for that.