The colour tag has no wiki summary.
-3
votes
1answer
77 views
LED-colour for clock [closed]
I'm making a big led-clock, and I'll use 55 LEDs per each Segment.
The clock will be 15cm high and consits of 4 Segments. That are approx. 250LEDs.
Now I'm looking for cheap LEDs which suit my ...
1
vote
1answer
122 views
How can PAL (TV) encode 3 colors in 1 phase?
As I understand it luminance is the amplitude of the signal, and color is the phase. You need 2 color signals (the third one can be derived from the other 2, like B = 1 - R - G). How can 1 phase ...
5
votes
4answers
641 views
Specific color sensing, is it possible in an economical way, without using camera/image recognition?
While I understand that color sensing with camera and sufficiently powered processor running image histogram logic (or other such algorithms) can determine presence of certain colours fairly reliably.
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4
votes
2answers
330 views
Can a computer monitor output light invisible to the human eye?
From what I understand a computer monitor can output lots (couldn't think of a better word) of colours. Is it possible for a computer monitor (television etc) to output light invisible to the human ...
1
vote
1answer
227 views
Distance range of a Color Sensor?
I would like to know what is the usual range of a color sensor ? Can it detect a light source from a few meters away ?
for example, if I want to use a color sensor to detect a particular LED 1 meter ...
5
votes
3answers
666 views
What do the colors of resistors mean?
I don't mean the colored bands, but the colors of the bodies themselves. They come in brown, blue, green, etc. Is there a standard?
For instance, epanorama says:
But there are two resistor body ...
3
votes
1answer
155 views
Colour correcting RGB LEDs - possibly with science
I have some RGB LEDs (eBay - no datasheet, 4 pin, common cathode, 5mm). I am colourblind.
I'd like to create a palette of colours which appear distinctly for most people's eyes, perhaps 16 colours or ...
7
votes
2answers
127 views
LED changing colour over time
Can a LED change colour over time?
I've had a blue LED set up for some time and it use to be a much brighter (ultramarine blue) now it's heading to a more greenish dull colour. How is this ...
