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08/04/05 12:28
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 		 #98803 - Detecting Light with 8051
Hello folks

Does anyone know how to detect light with a 8051 microcontroller?
I`m using the AT89C4051.
I guess a light resistance would be very useful. Do I have to connect the sensor with a A/D converter? How to interface to the microcontroller?

Any suggestions?

Greetings Karim

List of 33 messages in thread
TopicAuthorDate
Detecting Light with 8051            01/01/70 00:00      
   detecting light            01/01/70 00:00      
      Too specific            01/01/70 00:00      
   have a peek            01/01/70 00:00      
   TAOS inc            01/01/70 00:00      
      simple and cheap            01/01/70 00:00      
         Twilight Switch?            01/01/70 00:00      
         possible schematic            01/01/70 00:00      
            Add            01/01/70 00:00      
               re:add            01/01/70 00:00      
                  NO !            01/01/70 00:00      
                     updated schematic            01/01/70 00:00      
            possible, but not goog            01/01/70 00:00      
               Consensus!            01/01/70 00:00      
                  a comparator with hysteresis constitutes            01/01/70 00:00      
                     Better with            01/01/70 00:00      
                        a 555 ....            01/01/70 00:00      
                           555...            01/01/70 00:00      
         The simplest solution would be...            01/01/70 00:00      
            and...            01/01/70 00:00      
   Try this, It works and it's cheap            01/01/70 00:00      
      how do you know?            01/01/70 00:00      
         OT - you are fully right erik            01/01/70 00:00      
            that is not the issue            01/01/70 00:00      
               What is diddelysquat            01/01/70 00:00      
                  http://wordwebonline.com/en/DIDDLYSQUAT            01/01/70 00:00      
         Because I build it            01/01/70 00:00      
            nobody disputes that, but that does not            01/01/70 00:00      
            re:you built it            01/01/70 00:00      
               and thus Kai states "it's not clear, wh            01/01/70 00:00      
                  re:            01/01/70 00:00      
                     Yes-ish            01/01/70 00:00      
                     Isn't it funny...            01/01/70 00:00      

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