How Do You Achieve This Stairway 'chaser' Effect with an LED Light Strip?

What makes the light "run up the stairs" is the use of individually addressable LEDS. That means each LED on the strip has a microprocessor that can be called up and say "hey, you, turn on at this RGB value: 0x999999". That adds a bunch of complexity. Not least, the microprocessors that monitor the PIRs and sequence the LEDs in the direction being traveled. However, there's no end to the cool: the processor could roll pulsing light up or down the stairs... or it could even do rolling rainbows of color, like Boeing Dreamliner or something, because virtually all these "individually addressible LEDs" are RGB color type. It's there; the poster just has not unlocked it because the limiting factor is software (you have to write it). It also forces the installation to use 5 volts DC instead of 12/24 volts DC. This means the power supply must be heavier, and the wires must be much heavier. Parts list is: You can do the kaboodle on 12V or 24V, and so the wires get a lot smaller. You can drop the microprocessor altogether, and simply use 12/24 volt PIRs wired in parallel. (i.e. whichever PIR sees a customer turns the lights on, and the lights come on when either PIR asks for it, and the PIR auto-times out after a time.) You can also use simple, cheap 3528 monochrome LEDs in your choice of color temperature. Most 12 volt PIRS will happily run on 12V or 24V. So will dimmers. So you just get 12V or 24V LEDs to suit. Your parts list is:

1. Mains LED light bulb flickers when switched off [closed]

You might find that a different brand of bulb is much less prone to this kind of behavior. The internal circuit varies quite a bit from bulb to bulb. If you have a store with a generous return policy that applies to such products you could simply buy a few different types and try them. In particular, I would expect bulbs based on Microchip's CL8800 to not suffer from this problem. See this excellect article if you are interested in the gory details. Most bulbs have a small switching supply in them, but this type is different.

2. What Are The Benefits Of LED Light Tubes

Is there any benefits Of LED Light Tubes? High performance LED light tubes are now the latest trend in the lighting industry and they are quite popular presently and they come equipped with fantastic features. These lighting bulbs are better substitutes to fluorescent lighting tubes; with products such as Flexible LED tube light as well as LED T5 and LED T8 tubes. These lights can also be utilised not only in a working environment but also at residential houses. They are particularly better than other conventional lighting in terms of energy consumption, brightness and maintenance costs. Actually LED tube light types are safer to use. They have no toxic material (like mercury) in them, unlike fluorescent lighting bulbs. Mercury dust contained in fluorescent tubes pose serious health threat to anybody exposed to it, for those who work with them; such as electricians. Once a fluorescent light tube is broken in a room, it releases mercury into the air, the mercury could last for up to few hours in the air. Mercury is capable of causing asthma and some other respiratory problems. These lighting bulbs are also easier to install as compared to traditional fluorescent light bulbs. Nowadays, high quality LED fluorescent tubes have surpassed the normal conventional lights when it comes to energy consumption efficiency. The reason is that LED consume lesser energy consume lesser energy makes them a great lighting alternative for use in companies and for residential houses as this would assist in reducing the electricity bill payable for putting lights on by a great portion. They are in fact use only about 30 percent of energy which fluorescent light bulbs use to produce a particular level of brightness. They also save you a large sum of money as they last much longer than fluorescent light tubes. The flickering of the traditional fluorescent bulbs has been proven to be causing headaches to some people. The micro-pulse wavelength being emitted by these fluorescent light bulbs is said to be responsible for such headaches. Whereas, LED do not flicker at all when switched on, as such nullifying all concerns about experiencing headaches and disorientations. Though super bright LED lighting lamps are more expensive as compared to traditional lighting, but if you look at it on a long time basis, you would discover them to be the a rather cheaper lighting option. For more information on Ai LED light tubes, pls visit Ai LED fluorescent tubes

3. Why are there light rays coming out of the LED light sources?

It is caused by optical defects inside your eye. It affects all light sources in the dark - consider the traditional "star" shape with points when in reality starts are round