I was going to post a similar question this moring too.
I'm use the RS PIR and build two timers that Welby posted bock in March of last year on the TNDeer forum. This timer controls the delay with a combination of resistior and capicitor values. Since I already built them I want to utilize them. Can I power the timer using the same 9v battery used for the PIR?
I started to clean off the work bench last night. Hunting season is over and this winter I plan on wiring timers and photo sensor on some of my cameras. It's Home-Brew Cameras season now!!!