I don't want to give the forum members the impression that I am obsessed with this "occupancy sensing project"...
even though I am. But, I've been playing with the idea of "car counting" somemore.
I have an idea of using the tiny remotes... like the SlimFire (KR19A). Which when pressed sends the assigned X10 RF signal... but even if the button remains pressed... the signal stops sending after about two seconds. Hacking a KR19A (or KR22A) would allow me to count as many cars as I could ever need to count.
Car counting using remotes or even DS10A's isn't my idea alone... or even new.I think.. I would need to use a 12 volt relay that would cause the ON signal to be sent when the car/truck is started... and then (reversed) so an OFF signal would be sent when the car/truck is turned off.
Is there a mechanic here that could ofter any info/advice as to how or where to connect such a device. I know... counting cars isn't a complete solution to occupancy sensing. But it's a darn good start. Not just for me... but for most people. If the wife's and my car can both be counted (
ie a monitored code shows both cars as home) yet no activity shows inside the home... it would be a reasonable assumption that we at outside doing yardwork, walking, or just enjoying the deck. So... "both cars home" (as an AHP macro) could avoid arming the alarm or delay
BVC announcements that:
mail has arrived, the sump pump was on, the doorbell has rang (and video was recorded).
This is turning out to be a big... and by far.. the most complex project that I have ever attempted. But I think the pay off (as a automation advantage) could be huge.