I like both of those bulb ideas...I'm also not a huge fan of LED, but the concept is pretty interesting and the price is about the same as a cheap motion detector. Thanks for the links.
I was happy to research and think about this issue. It captured my interest
and imagination. I like and use motion sensor lighting in my man-cave, laundry room, and garage. Places where I might have stuff in my hands... or in the garage with an entry far from the switch.
I jumped on the CFL's (compact florescence Lamps) nearly 20 years ago. Now those bulbs... were worth hating. But... I actually still have two or three CFL's in use around here.
The LED's are cheap to operate... but still can be a comparatively high investment,
for the return, on lights seldom used. But they last for so long... any light fixture that requires getting out a real ladder (not a foot stool) deserves a LED bulb. The wife and I have jumped on a couple "good deals" on LED's.... and I really have learned to appreciate their light and... how little electric they eat.
And now with the WiFi LED bulbs... Home Automation enthusiast can automate and convert to LED at around $10 a pop... and it still operates for cheap.
I converted my Home Theater to LED... and then... had to also replace the switches to the relay type. Other switches in my older home have a split live wire... making the relay switches unusable. But... I've managed to convert most of my most-used lights to LED. I
"think" there is an actual monthly dollar saving. But... I am not going to do the math... because it would be really frustrating if I was wrong.