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01/24/02 19:52
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#19081 - RE: Circuit for multiple DS1820 - Andy
"single (4 sensors, each on its own pin"

and that defeats the whole point of the One-Wire bus!

I used it because in this way I don't need to keep track of sensor addresses and changing a sensor does not require changing address, stored in microcontroller. In this application I used skip rom command to read temperature directly and without knowing its address.


"pull up (8kohm) on data line."

Sounds a bit high?

I even used LED diode and (I think 2kohm) resistor so I can see when sensor reading is in process.


regards, Damjan



List of 11 messages in thread
TopicAuthorDate
Circuit for multiple DS1820            01/01/70 00:00      
RE: Circuit for multiple DS1820            01/01/70 00:00      
RE: Circuit for multiple DS1820            01/01/70 00:00      
RE: Circuit for multiple DS1820            01/01/70 00:00      
RE: Circuit for multiple DS1820            01/01/70 00:00      
RE: Circuit for multiple DS1820            01/01/70 00:00      
RE: Circuit for multiple DS1820 - Damjan            01/01/70 00:00      
RE: Circuit for multiple DS1820 - Damjan            01/01/70 00:00      
RE: Circuit for multiple DS1820 - Andy            01/01/70 00:00      
RE: Circuit for multiple DS1820 - Luccus            01/01/70 00:00      
RE: Circuit for multiple DS1820 - Luccus            01/01/70 00:00      

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