I assume we are talking about X10 stuff. Here is how you can implement it:
You will need CM15A and macros
Thanks for your response. I just saw it somehow. My understanding is that X10 hardware isn't capable of this. At least this is what X10 themselves told me a while back. This could be wrong of course, or have changed. Which X10 motion sensor hardware would you suggest I use ?
Also, as far as I can tell, all the X10 motion sensors are battery powered also, has this changed ? I really don't want to have my home automation depend on batteries. Something either plug-in or ideally hardwired would be much preferred.
What I'm trying to do essentially is replace a Leviton IPP15 hardwired switch. That switch just cuts off the power to what's connected to it when no motion has been detected for a set time, typically 30 minutes (default setting, which I use).
These Leviton switches use very little power, definitely under 1 watt. I'm not able to measure it, but I have nearly a hundred of them in my house. I'm not looking to replace all of them. This is only for two rooms that I have X10 switches in - my home theater and my home office. If I find a good solution, I might add some to my master bedroom.
In my mind, I'd like the motion sensor to send some sort of signal at the expiration of the timer, that a home automation computer could receive and act upon. Preferably something hardwired. It doesn't have to be x10. A home automation computer needs to be able to receive that signal and act on, for example, by sending a few X10 signals through the powerline.
Motion sensor, light on -> trigger macro on CM15A -> turn light on
With a vacancy sensor, the sensor never turns on the light, so I don't think this is right.
When motion is detected, it means the light is kept on, if it is already on. If it's already off, it stays off.
Motion sensor, timer, light off -> trigger macro on CM15A -> turn light off
You can make the 2nd macro (turning light off) conditional to a flag. The flag is clear by default. If you set the flag, the macro will not run and your light will not turn off.
Can you explain this a bit better ? Which software allows programming this ?
You said I needed the CM15A, so are you talking about ActiveHome Pro ?
I am currently using a single board computer for my automation, running Linux, with a CM11A. I don't want to use a Windows PC due to power consumption. The whole point of my home automation is to save energy, and keeping a Windows PC on would negate that goal.
I am sure the method is described in details somewhere on this forum.
I would really appreciate a link. I wasn't able to find it through searches.