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Toon onderwerp - Digitale Temperatuur Sensor DS18B20 • nodo-domotica.nl

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Digitale Temperatuur Sensor DS18B20

Hier alles over de hardware kant van de Nodo

Digitale Temperatuur Sensor DS18B20

Berichtdoor bunny007 » 31 jan 2012, 14:24

Hoi,

Ik zou graag een DS18B20 sensor willen hangen aan mijn arduino bordje, is dat redelijk eenvouding te doen, of is het zo goed als onmogelijk ? Voordeel zou moeten zijn dat eiken niet meer hoeft, en tevens zou er een lange kabel aan gehangen kunnen worden zodat je sensor en arduino bordje niet al te dicht bij elkaar hoeven.

Ref : http://www.emartee.com/product/41763/Di ... %20DS18B20

Afbeelding

Afbeelding
R744, Mega, LAN, Nodoshield v1.2, 1xDHT22, 5xDS18B20, 5x8ch relay, 40/8p PCF8574, 5xKAKU, 4x2262, RFID
R744, Mega, LAN, 2xDS18B20, 2x8ch relay, 16/8p PCF8574, 2xHC-SR501
R818, MiniPro, 433RF, 2xMG995 Servo
Orange PI PC (€15) - Lubuntu 14.04 - Domoticz
bunny007
 
Berichten: 129
Geregistreerd: 09 dec 2011, 08:46

Re: Digitale Temperatuur Sensor DS18B20

Berichtdoor Paul » 10 feb 2012, 09:51

Deze sensor wordt niet ondersteund. Als je deze perse wilt gebruiken dan zul je de code moeten aanpassen. overigens overschat niet de lengte van de kabel die je mag gebruiken. volgens de I2C specificaties mag dit niet meer zijn dan een meter. Wat je wel kan doen is een helemaal uitgeklede Nodo met alleen een rf zender maken die de waarden draadloos naar je centrale nodo stuurt.
Groeten Paul
Paul
 
Berichten: 1152
Geregistreerd: 31 aug 2011, 20:33

Re: Digitale Temperatuur Sensor DS18B20

Berichtdoor Bert » 10 feb 2012, 12:41

De DS18B20 zijn geen i2c onderelen maar werken via het OneWire protocol (van Dallas/Maxim).


Bert
Bert
 
Berichten: 3
Geregistreerd: 21 dec 2011, 22:05

Re: Digitale Temperatuur Sensor DS18B20

Berichtdoor Paul » 10 feb 2012, 13:26

Groeten Paul
Paul
 
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Geregistreerd: 31 aug 2011, 20:33

Re: Digitale Temperatuur Sensor DS18B20

Berichtdoor PieterS » 10 feb 2012, 16:30

PieterS
 
Berichten: 234
Geregistreerd: 21 dec 2011, 22:11

Re: Digitale Temperatuur Sensor DS18B20

Berichtdoor bunny007 » 12 feb 2012, 15:12

Dank jullie wel voor de duidelijke antwoorden

Waarom linken naar verre sites? Toevallig had ik ze daar gekocht. ;)

Maar dan denk ik dat het beste kan doen wat Paul al zegt even wachten op de nieuwe release en dan een plugin ervoor maken.

Ik had ook al meer dan 30 meter gehoord aan bekabeling, en dat is toch een mooie lengte voor dit soort sensors.
R744, Mega, LAN, Nodoshield v1.2, 1xDHT22, 5xDS18B20, 5x8ch relay, 40/8p PCF8574, 5xKAKU, 4x2262, RFID
R744, Mega, LAN, 2xDS18B20, 2x8ch relay, 16/8p PCF8574, 2xHC-SR501
R818, MiniPro, 433RF, 2xMG995 Servo
Orange PI PC (€15) - Lubuntu 14.04 - Domoticz
bunny007
 
Berichten: 129
Geregistreerd: 09 dec 2011, 08:46


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