I also had problems on 1043nd. An unpowered hub shared with a pendrive made
it worse. The drive also had problems and they were causing data/filesystem
corruption too. A powered hub made issues almost disappear. With that it
lost the host 1-2 times a year only. For ds9490 un and re-plugging the
Hi,
I have done it using tp-link wr1043nd and ds9490. The 703 has much less
memory, likely requires some hacking to get all the sw on it. (it has only
4M flash)
Vajk
On Sat, Aug 23, 2014 at 2:45 PM, Colin Law clan...@gmail.com wrote:
Hi
I have seen suggestions that a cheap wifi 1-wire hub
703 is officially supported by openwrt. So you can install it without
issues. Worst case you have to strip it a bit to be able to install
owfs/ownet.
Vajk
On Sat, Aug 23, 2014 at 4:48 PM, Colin Law clan...@gmail.com wrote:
On 23 August 2014 14:03, Vajk Fekete vaj...@gmail.com wrote:
Hi
Hi,
How will this handle the persistent features? As I understand ownet does
cache values for example. If the listener is handled externally and ownet
is not running generally, would it have to use disk as persistence?
Vajk
On Thu, Jun 12, 2014 at 1:50 PM, Jan Kandziora j...@gmx.de wrote:
Am
So it receives 7V on a separate line. Does it also have a separate line for
GND? Even if so, the power will share the gnd line that is used for
communications.
Vajk
On Wed, Apr 30, 2014 at 10:26 AM, Ors Tiszay listaku...@gmail.com wrote:
Hi Paul,
You're probably right about the powered
Maybe I am an old chap. If I do not like a function in an API, I just
create a wrapper and use my own wrapper in my code. In an object oriented
environment it is even simpler, I can create my own class that extends the
original and changes any behavior I need to behave differently. I am not
In my opinion having to trim the value is a miniscule annoyance compared to
have an increasing number of redundant virtual directories.
Vajk
On Mon, Mar 17, 2014 at 6:49 PM, Jerry Scharf
sch...@lagunawayconsulting.com wrote:
Michael,
I agree with Paul on this. I think it is wrong to make a
afaik owfs will not check the bus until you do an ls (or something else).
so it is not there until you check it. you cannot avoid checking the
folder in an infinite loop.
Vajk
On Fri, Mar 14, 2014 at 2:09 PM, Rob het.oos...@gmail.com wrote:
I am trying to make a punch clock with owfs and
wrote:
So you mean checking without using inotify?
2014-03-14 14:15 GMT+01:00 Vajk Fekete vaj...@gmail.com:
afaik owfs will not check the bus until you do an ls (or something else).
so it is not there until you check it. you cannot avoid checking the
folder in an infinite loop.
Vajk
, and try other
solutions. My hope was that owfs would have some possibility to perform a
custom action when it detects a change.
2014-03-14 15:14 GMT+01:00 Vajk Fekete vaj...@gmail.com:
Yes.
Inotify is integrated on the filesystem level. It captures changes to
files that happen using
I do not see what is the reason against the linux box. I do not think you
could get cheaper with an avr and Xbee than a tplink 703n,
http://www.ebay.com/bhp/tp-link-tl-wr703n
Vajk
On Sun, Feb 9, 2014 at 10:48 PM, Colin Reese colin.re...@gmail.com wrote:
I want to run a microcontroller with a
this is only a hobby for me, and already had
three 9490s on hand.
Vajk
On Mon, Feb 10, 2014 at 1:20 PM, Colin Law clan...@gmail.com wrote:
On 10 February 2014 12:01, Vajk Fekete vaj...@gmail.com wrote:
I do not see what is the reason against the linux box. I do not think you
could get cheaper
16Mhz and maybe
has 32Kbyte flash and 2500bytes RAM.
Vajk
On Mon, Feb 10, 2014 at 2:40 PM, Colin Law clan...@gmail.com wrote:
On 10 February 2014 13:36, Vajk Fekete vaj...@gmail.com wrote:
There are several options
- real usb 1wire host - pretty expensive
- usb serial+serial host
- use
wifi with an xbee or other wifi module?
On Feb 10, 2014, at 5:56, Vajk Fekete vaj...@gmail.com wrote:
You do need some 1wire host for the AVR too.
If not, that means you plan for bit banging and a passive interface. Same
is possible with openwrt and a cheap router.
An other option
found it.
On Feb 10, 2014, at 12:36, Vajk Fekete vaj...@gmail.com wrote:
it's up to you. a wifi xbee module is about twice as much as the tplink
router I have linked.
wifi, and tcpip are pretty complex protocols. to handle encryption, data
rates and the protocols, you must have some real cpu
One of my recent lessons learned: a lot of small devices have a mini usb
connector for power. And they consume around say 500mA. And the cheap usb
cables, even the short ones have so little copper in them that 500mA may
cause 2-300mV drop on a 6in cable.
Vajk
On Mon, Feb 3, 2014 at 10:43 PM,
My guess: the new cables are cat5e/cat6, maybe even shielded. The old ones
were unshielded cat5. 1wire does not like capacitance, and shielding adds
capacitance. Usually the flat telephone wire performs better than twisted
pair!
Vajk
On Fri, Jan 31, 2014 at 6:02 PM, Colin Tinker
we still cannot rule out the difference is in hardware.
when you say use an additional power supply, what do you mean by that? did
you connect a dc5v power supply to the gnd an +5v pins of the lcd unit?
Vajk
On Thu, Dec 12, 2013 at 6:26 PM, Bernd Lamparter bernd.lampar...@web.dewrote:
Hi
the
DS2450R from the Windows-PC and plug it into the Linux-PC. There is no
difference in the 1-Wire setup.
Ciao,
Bernd
*Gesendet:* Donnerstag, 12. Dezember 2013 um 18:49 Uhr
*Von:* Vajk Fekete vaj...@gmail.com
*An:* OWFS (One-wire file system) discussion and help
owfs-developers
Hi,
I have no python exposure, but I think I got it.
Think in layers.
Layer0 is the hw.
Layer1 is owserver, the -u means it will access the usb device directly
In Layer2 you have several components side by side.
- owfs will create the filesystem representation. -s serverIP:4304
causes it to
this case, if the wiring shorts, it will kill all sensors. u will have to
find out which is the bad one, unconnect it, and then you can continue.
also to notethat likely they will fail in proportion if time, so if all
are same, they will fail about the same time.
Vajk
On Mon, Dec 9, 2013 at
Jan, thus looks very promising!
Van
On Oct 2, 2013 1:18 AM, Jan Kandziora j...@gmx.de wrote:
Hi all,
I guess all of you interested in opto-isolating the onewire already know
the DS2480B datasheet and Thomas Rudolphi's circuits (for those who
don't, check
The key piece of information is, that ds9490 uses the ds2490 chip. Which is
kinda discontinued by dallas/maxim. At a point they stated they have made a
huge lot that will last years, and stopped production. They may have
restarted production, or are just keeping price high enough to fulfill the
You also must take into account the wiring. The wires go to the sensor, up
to the die itself, and are made of good heat conducting material. Use as
narrow wire as possible, and stuff a reasonable amount of the wire under
the insulation. I mean the wire not just comes in a plain line, but is
If you seal 25Celsius 70% humidity air in, and cool that down to 10Celsius,
you will have about 9grams of condensation per cubic meter of air.
In my view this is not too significant. You only will have problems, if
fresh humid air can enter, and more water condensens from the fresh air.
You can
Just one note: pay attention to the insulation on the wire. Using general
pvc insulated wire will cause a leak itself. Best would be to embed some
stainless bolts, and connect wires to them using nuts and washers on the
exterior side.
Vajk
On Sun, Jul 7, 2013 at 9:18 PM, Jerry Scharf
You can buy motorized cylinders or motorized lock assemblies. With these,
you still have the mechanical key and it functions regardless of the
electronics. I did not want to advertise anyone, but if you need sample
links, I can send some.
Vajk
On Wed, Jun 5, 2013 at 10:39 AM, Giulio Carabetta
Szia,
There were postings about the w1 kernel module being unstable. Not just on
RasPi.
Vajk
On Sat, Feb 16, 2013 at 8:52 AM, Attila bigm...@gmail.com wrote:
Greetings,
After several tries I found that my USB 1-wire master is not working
reliable on Raspberry Pi - seems in some cases USB
is floating. There may be some parasitic capacitance, that is charged thru
the internal pullup, and pulling the input low for the charging pulse?
Vajk
On Fri, Dec 28, 2012 at 4:24 PM, Gregg Levine gregg.drw...@gmail.comwrote:
On Fri, Dec 28, 2012 at 3:21 AM, Vajk Fekete vaj...@gmail.com wrote
There are endless options. You need to decide if you want a quick hack, or
a product grade solution.
For the optoisolated circuit, you will also need a reverse diode parallel
to the led, else the other half wave will stress the led too much. And the
capacitive series component to limit the
Hi,
It is really about
- how fast it has to be (like detect power off in 20 secs is acceptable?)
- how professional does it have to be?
There are wide varieties. The simplest is to use a lightbulb and a ds1820
:-)
Vajk
On Tue, Dec 4, 2012 at 6:08 PM, Silvano Gai s...@ip6.com wrote:
I need
If the functionality is not more than a thermostat that has thresholds to
turn the heating on and off, one could consider fully emulating ds1821.
Then no special support would be needed on the server side.
Vajk
On Fri, Nov 23, 2012 at 5:05 PM, Paul Alfille paul.alfi...@gmail.comwrote:
Also to note, that when the parasite power mode is used, the 5v pin of the
18s20 has to be connected to the gnd pin.
Hi all people here. I am a newbie to the list. Have openwrt on tplink
wr1043nd with ds9490 and owfs. Experimenting with creating my own slaves in
an atmel microcontroller. My
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