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nodo-domotica.nl • Toon onderwerp - 868 MHz ontvangers - Afdrukweergave
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868 MHz ontvangers
http://www.nodo-domotica.nl/forum/viewtopic.php?f=26&t=649		 « Vorige  Pagina 2 van 2
Auteur:  manjh [ 03 sep 2012, 15:24 ]
Titel:  Re: 868 MHz ontvangers
ga dan all-the-way, en bedenk een geursensor.... :D
Auteur:  Kaag [ 03 sep 2012, 18:43 ]
Titel:  Re: 868 MHz ontvangers
Ja, die heb ik al! een hele grote NEUS :P

die onvangt alleen geur en verzend alleen op frequenties voor het menselijk oor....
Auteur:  mvdbro [ 13 sep 2012, 19:40 ]
Titel:  Re: 868 MHz ontvangers
Inmiddels draait een "Hardware Plugin" voor mijn Alecto 868 MHz weerstation. Ik heb een standaard Arduino Uno voorzien van een 868 MHz receiver en de custom 121 Nodo software met userplugin 0.7.3. De meetwaardes van het weerstation gaan via de Uno, via I2C naar de Mega en dan direct naar de Nodo WebApp.

Afronding zou zijn om een printplaatje met alleen een Atmel328 + ontvanger aan te sluiten op de Mega. Dat is voldoende voor een hardware plugin.

De Mega kan nu eventueel terug naar een zeer eenvoudige userplugin die enkel I2C communicatie support en hoef ik het signal tab ook niet meer aan te passen.
Auteur:  Markie [ 17 sep 2012, 18:52 ]
Titel:  Re: 868 MHz ontvangers
Auteur:  Markie [ 20 sep 2012, 22:13 ]
Titel:  Re: 868 MHz ontvangers
of is het niet mogelijk om grotere afstand te overbruggen over de I2C bus
Auteur:  softwareregi [ 20 sep 2012, 23:49 ]
Titel:  Re: 868 MHz ontvangers
Wat noem je een grote afstand? Vaak heb je een aanpassing nodig met weerstand en C, daarnaast is comm.snelheid van invloed.
Indien je grote afstanden wilt overbruggen kun je gebruik maken van I2C extenders.

Zoek maar eens op intenet op: maximum distance for I2C
Gr. John
Auteur:  mvdbro [ 21 sep 2012, 06:18 ]
Titel:  Re: 868 MHz ontvangers
Waarom wil je die Uno verder van de Mega af plaatsen? Bij mij zit een losse Atmel 328 gewoon in dezelfde behuizing als de Mega. Nu nog op een breadbord, maar ik overweeg om deze bovenop de Nodoshield te plaatsen. Omdat de ontvangers niet op dezelfde frequentie werken hebben ze onderling geen last van interferentie.
Auteur:  Markie [ 21 sep 2012, 23:01 ]
Titel:  Re: 868 MHz ontvangers
Auteur:  anthonyb [ 15 jan 2013, 09:57 ]
Titel:  Re: 868 MHz ontvangers
Auteur:  manjh [ 08 apr 2013, 08:42 ]
Titel:  Re: 868 MHz ontvangers
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