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16  Forum 2005-2010 (read only) / Deutsch / Re: 230 Volt ansteuern on: February 19, 2010, 09:33:14 am
Ja das dachte ich mir auch schon - wäre eigentlich eine einfache und vor allem sichere Variante auch wenn man das Teilchen zusammenlöten muss - aber vermutlich noch besser als selbst irgendwelche Platinen zu basteln und Gehäuse zu bearbeiten.

17  Forum 2005-2010 (read only) / Deutsch / 230 Volt ansteuern on: February 19, 2010, 09:07:31 am
Hallo zusammen,

bin seit wenigen Tagen Besitzer eines Arduino Duemilanove und suche jetzt nach Möglichkeiten ihn mit der "230 Volt Welt" zu verbinden.

Hat jemand hiermit Erfahrungen bzw. lässt sich das einsetzen:

ELV Artikel-Nr.: 68-839-09


Sonst Vorschläge, die sich schnell und sicher umsetzen lassen

Gruß
Dirk



 


18  Forum 2005-2010 (read only) / Interfacing / Re: Trouble with DS18S20 sensors on: March 08, 2010, 01:21:36 pm
And another interesting Advanced 1-Wire Network Driver schematic by Maxim

http://pdfserv.maxim-ic.com/en/an/AN244.pdf

Would be great if someone could add an Arduino and a DS18S20  to this, so that it would be easier to understand this.

http://pdfserv.maxim-ic.com/en/an/AN4206.pdf
19  Forum 2005-2010 (read only) / Interfacing / Re: Trouble with DS18S20 sensors on: March 07, 2010, 03:05:11 am
Has someone used this with the Arduino and DS18S20 as explained in appendix A ?

http://pdfserv.maxim-ic.com/en/an/AN148.pdf

20  Forum 2005-2010 (read only) / Interfacing / Re: Trouble with DS18S20 sensors on: March 06, 2010, 12:37:51 pm
Hi David,

thanks for your help. Indded that semms to be a bigger problem with this 18S20. Nevertheless I´m happy that they wotk fine with the Selfmade-Converter and the digitemp Prg. So I knew tht the things are working well and not dead.

Maybe it could be a solution to have a closer look to this converter and to the digitemp program to find a solution for the arduino too

http://www.digitemp.com/

http://public.rz.fh-wolfenbuettel.de/~hamannm/general/digitempd.html




So it works as long as I use 2 of this with the arduino

Ground ---- Ground
Data    -----  Pin 2
VDD   ------- +5 V

and also a 4K7 Resistor between  Data and +5V


Meanwhile I found this info:

Note on resistors: For larger networks, try something smaller. The ATmega328/168 datasheet indicates starting at 1k6 and a number of users have found smaller to work better on larger networks.

here:

http://www.arduino.cc/playground/Learning/OneWire

which means would be the resistor.

Dirk

 
Edit: Sun 07.02.2010

I changed the resistor from 4K7 to 1K0 and only one  still makes problems (-127 Degrees C)  (The sensor is ok - no prob with  digitemp). Maybe 1 K are still to much.

 

21  Forum 2005-2010 (read only) / Interfacing / Trouble with DS18S20 sensors on: March 06, 2010, 08:15:14 am
Hello!

I have some trouble with  DS 18S20 sensors and the  Arduino -

The Problem:

I have 9 DS18S20 sensors connected to a converter and I use digitemp to read them (No parasite mode because of higher temperatures) - Works absolutly fine. No problems.

I have an arduino with 2 DS1820 on a board (Also No parasite mode, and a  4K7 resistor (+5 - DATA)) - works fine too

When I try to add the 9 sensors to the arduino - it will see none of them not even the 2.

Maybe the resistor is the problem ?  

Hope that somebody can help me.

DJ





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