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???
05/05/09 08:00
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 		 #165059 - with common red 5mm led
Responding to: ???'s previous message
Per Westermark said:
You did not answer the question.

The LDR resistance will vary with varying light intensity.

But how will you calibrate it and use it with different color filters, to measure the amount of red, green, blue, or the amount of light at a very specific wavelength?


With common red 5mm led.

I just found at edaboard.com but no found essensial answer

Thank you
Regards
Jeckson Ben


List of 44 messages in thread
TopicAuthorDate
simple Colour sensor            01/01/70 00:00      
   LDR spectral response            01/01/70 00:00      
      the colours rod transparant....            01/01/70 00:00      
         Didn't answer the question            01/01/70 00:00      
            with common red 5mm led            01/01/70 00:00      
               Insufficient!            01/01/70 00:00      
               Does not sound like a solution, but please link            01/01/70 00:00      
                  with bulk lamp 1.5-VDC torch            01/01/70 00:00      
                     bulk lamp?            01/01/70 00:00      
                        Meant            01/01/70 00:00      
                     You haven't searched, have you?            01/01/70 00:00      
                        Had searched            01/01/70 00:00      
                           I'm only googling the cheap solution.            01/01/70 00:00      
                              for...            01/01/70 00:00      
                                 bulk lamp            01/01/70 00:00      
                                 Measuring color is way harder than you think!            01/01/70 00:00      
         You missed the point!            01/01/70 00:00      
            Calibrated is the problem            01/01/70 00:00      
               Test what?            01/01/70 00:00      
   There is a simple solution            01/01/70 00:00      
      Lots of work            01/01/70 00:00      
      Thank's            01/01/70 00:00      
         How?            01/01/70 00:00      
            something...            01/01/70 00:00      
               this colour            01/01/70 00:00      
                  Controllable? Repeatable?            01/01/70 00:00      
                     Fading a big problem            01/01/70 00:00      
                        why all the 'fiddle'            01/01/70 00:00      
                           I want cheap crap            01/01/70 00:00      
                              it's Christmas in June            01/01/70 00:00      
                                 fishing line            01/01/70 00:00      
                                    ooooohhh look what I found            01/01/70 00:00      
                                       Beat you to it!            01/01/70 00:00      
                                       I sticky            01/01/70 00:00      
                                          LED bulk lamp?            01/01/70 00:00      
                                             Bulk lamp - he means a torch (or "flashlight")            01/01/70 00:00      
                                                LED or bulk lamp            01/01/70 00:00      
                                                   Not color but changes in color            01/01/70 00:00      
                                                      Yes...Correct            01/01/70 00:00      
                        with black small tube            01/01/70 00:00      
                     Colour-ish            01/01/70 00:00      
   just thought of it            01/01/70 00:00      
      Glass filters good but normally expensive            01/01/70 00:00      
         Jacksons duality            01/01/70 00:00      

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