Monday, October 27, 2008
though amazon seems to have some cheaper options like this
Current cons include: jerkiness of on and off, having to wait for lights to flicker on (esp. fluorescents), extra costs of the sensor switch, sensor switch getting blocked by furniture, sensor switches getting turned on by pets or breezes outdoors. Also the first one I link to, a certain percentage will die after some amount of time and require replacement.
Note that the replacement switches are the most unobtrusive, but they don't always lend to ideal placement for the sensor. Also you need an electrician to do the replacement (though certain electrical engineers I know have done the replacements yourself, though I don't recommend it as death or hair standing on it's end can occur -- remember once you let the smoke out of your electrical system it's very hard to get it back)
My motion sensor dream:
Switch would have off, auto, 10% auto, and on.
Auto would leave the light off until motion is detected, it would quickly ramp the light from 0 to 100%.
10% auto would leave the light at 10% (so you can vaguely see and not trip) and quickly ramp to 100% when motion is detected.
When leaving a room it would gradually lower the light from 100% to either 10 or 0% depending on the setting.
I think these features would eliminate a lot of the issues that people have with motion sensors lights.
Also, a lot of houses have motion sensors already for alarms, can we build off that somehow? For that matter the alarms also know when you enter and leave a house, that could tie in to a turn off all the lights when you leave sort of scenario.
For those with incandescent sockets: screw in motion sensor
or those with plug in lamps: pluggable motion sensor
Please note that I didn't do extensive searching on amazon for the best, I just found the ones I originally bought and amazon recommended the other 3.
Note, there are cheaper generic versions of these sensors findable on google products results, though they are from unknown suppliers and unknown stores, but please report back with your findings and let us know good ones that are cheap!
Well, actually it's quite a neat gizmo—it's battery powered, and simply mounts directly over a light switch, which it then throws for you if it doesn't detect movement in front of its sensor. Plus it turns the lights on when you enter.
Friday, October 24, 2008
Here are some interesting facts about Boeing 767s:
Tuesday, October 21, 2008