update: a cleaner approach is discussed here
I made this app, which takes a screenshot of the nook every 1:50 minutes and saves it to /media/screensavers/ScreenshotSaver.
When the nook goes to sleep after 2 minut...
If what you want is to keep showing the current screen instead of screensaver when the nook goes to sleep, you can use either this or that.
This way you don't have to keep the nook awake all the time so the battery lasts longer.
But if you need ...
I don't know xdaAutotool, I use apktool but you can probably use whatever tool you like.
First you need a patched /system/framework/services.jar
the one I attached here is for firmware 1.2.1 rooted with NookManager, so it also includes the NookM...