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???
03/18/07 22:20
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 		 #135226 - Options
Responding to: ???'s previous message
Jez Smith said:
A simple thermistor being read by an analogue to digital convertor and then the 8052 doing some calculations to convert the readings into a value suitable to be displayed, or you could go for a more sophisticated device such as the dallas ds18x20/ds1822 on a 1 wire bus but ...

There are also many other temperature sensors that give a digital output, and sensors that give other analogue outputs - such as a frequency proportional to temperature.

So the first step must be to decide what sensor you will use.

This will also depend upon the range of temperatures that you wish to measure...


List of 34 messages in thread
TopicAuthorDate
thermometer with a 89c52            01/01/70 00:00      
   e-mail            01/01/70 00:00      
   You\\\'ve got lots of options including...            01/01/70 00:00      
      Options            01/01/70 00:00      
   start by making your A/D convertor work            01/01/70 00:00      
      What the hell are you posting??            01/01/70 00:00      
      Not for a direct-to-digital sensor!            01/01/70 00:00      
   Link            01/01/70 00:00      
   Background?            01/01/70 00:00      
      thanx            01/01/70 00:00      
         Project?            01/01/70 00:00      
            hobby            01/01/70 00:00      
               Plenty of time to think, then!            01/01/70 00:00      
   Thermistor, 12-bit ADC, 89S52 and LED display            01/01/70 00:00      
      lm35            01/01/70 00:00      
         Thermistor Thermometer: LCD version            01/01/70 00:00      
            Think!            01/01/70 00:00      
         Interesting links that have to do with the LM35            01/01/70 00:00      
            Interesting links on how to make a simple ADC...            01/01/70 00:00      
            You forgot the most important one            01/01/70 00:00      
               I was assuming that he was already there!            01/01/70 00:00      
   the easy way            01/01/70 00:00      
      Easy?            01/01/70 00:00      
         Re Easy            01/01/70 00:00      
            There's the problem!            01/01/70 00:00      
            My friend's opinion            01/01/70 00:00      
               I hope analog            01/01/70 00:00      
                  In that case            01/01/70 00:00      
               understanding basics            01/01/70 00:00      
                  slight warning about 1-wire thermo sensors            01/01/70 00:00      
                     Parasite power?            01/01/70 00:00      
                        yep parasite power            01/01/70 00:00      
               not believeable !            01/01/70 00:00      
                  timing diagrams can look daunting.            01/01/70 00:00      

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