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Toon onderwerp - Een ntc uitlezen • nodo-domotica.nl

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Een ntc uitlezen

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Re: Een ntc uitlezen

door mvdbro » 19 nov 2012, 19:41

mvdbro: Berichten: 1092; Geregistreerd: 21 okt 2011, 12:06

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Re: Een ntc uitlezen

door proza » 19 nov 2012, 20:40

- Jura Impressa F50 and a Starbucks MUG makes my day complete

proza: Berichten: 420; Geregistreerd: 03 nov 2011, 22:44

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Re: Een ntc uitlezen

door mvdbro » 19 nov 2012, 20:50

Er bestaat ook nog een DHT22. Wel nauwkeuriger dan de DHT11.
Misschien de beste optie als je een combi sensor wil...

mvdbro: Berichten: 1092; Geregistreerd: 21 okt 2011, 12:06

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Re: Een ntc uitlezen

door manjh » 19 nov 2012, 20:51

Hans

manjh: Berichten: 1173; Geregistreerd: 29 aug 2011, 14:39

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Re: Een ntc uitlezen

door manjh » 19 nov 2012, 21:17

Ik heb even de datasheet erop nageslagen. Default staat de DS18B20 ingesteld op 12-bits resolutie, en mijn plugin dus ook.
Om 9-, 10- en 11-bits resolutie te ondersteunen is wat code nodig: het instellen, maar ook het uitlezen. Het enige voordeel van die lagere resoluties is dat de omrekentijd naar 'C korter is.
Voorlopig laat ik het even zo. 12-bits resolutie dus.
Bereik is -55 tot +125 'C.
Nauwkeurigheid is +/- een halve graad, tussen -10 en +85'C.

Hans

manjh: Berichten: 1173; Geregistreerd: 29 aug 2011, 14:39

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Re: Een ntc uitlezen

door manjh » 19 nov 2012, 21:59

Hans

manjh: Berichten: 1173; Geregistreerd: 29 aug 2011, 14:39

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