Re: [nslu2-linux] nslu2 and 1wire
In data 29/05/2006 13.48 Michael Homscheidt ha scritto:
Hell Vittore,I use 6 temp's DS18S20, two LCD display and a passive hub.
I read the following mail which you posted into the NSLU mailing list with high
interest. What I would like to do is to use my NSLU with some temperature
sensors (up to six). Additionally I had a look at the Maxim website but I have
some understanding problems:
My biggest question is what devices do I need?
- I think I need a temperature sensor (but which one? What are the differences between the available sensors?)
Difference are sensibility, response time, alert, trigger,....
I use a usb dongle from hobby-boards (DS9490R-A)
- I need a AD converter (I think the DS2450 will do the job for up to 4 sensors)
- but how to connect the AD converter (serial output) to the USB bus of theNo, use a usb converter. From Maxim there is some plan for self made man :-)
NSLU? Does any USB to Serial converter do the job? Or is there anything
available from Maxim?
- Does there some more information exist about the OWFS?
Life is now! :-)
*owfs* is a method under linux to allow 1-wire
<http://www.maxim-ic.com/1-Wire.cfm> devices to appear like files in a
directory. You can then enter a command like "cat */temperature" to have
all the temperatures sensors measure and print their data. For instance,
the collection of temperature sensors above are all on one bus,
individually addressable, and will reconfigure on the fly as items are
added or removed. Each device is it's own directory with it's own
These is a memo for a freshed installed NSLU2:
ipkg install unslung-feeds
cp owfs-feed.conf /etc/ipkg/
ipkg install openssh
ipkg install owfs
ls -l /tmp/1wire