When in shooting mode how do I start motion detecting? The shutter button doesn’t start it and neither does the alt.
Again, you need to
- have the camera in shooting mode
- enter alt mode
- then fully press the shutter to start the script
After that, the screen with the green grid you have previously posted pictures of should appear, and subsequent motion should trigger shooting.
If some part of this does not happen, you need to clearly describe which step failed and how.
I have the mode wheel on AUTO. Should it be on P or MANUAL
It shouldn't matter for motion detection, though I'd generally suggest P rather than AUTO, because auto has a higher chance of interfering with other CHDK features. M should be fine if you want to control the exposure yourself.