Still $30. They should be $5 at most.
That is rather funny. I've sold several 1wire masters made by hand.
Prime cost of DS9490R is $20 (ds2490 - $7, ds2401+ds9503 - $2, plus different
chips)!
Prime cost of DS9097U is around $13 (ds2480b - $4, ds9503 - $1, plus
different chips)!
Bought
Bruce,
a Shop with a wide selection for 1-wire chips is:
http://www.fuchs-shop.com/en/shop/17/
I use the LinkUSB and I am very happy with it. I run a powered network
of about 15 temp-sensors and 3 IO-chips, which is driving my home
heating system.
Cheers
Martin
On 09/28/2013 07:37 PM,
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
I just checked the data sheet of the LinkUSB and it does not have a
1-wire chip at all but rather emulates the DS2480 - here an excerpt:
DS2480B/9097U Emulation
The LinkUSBTM is programmed to closely emulate a Dallas DS2480B serial
port to
1-Wire line driver so that existing software can use
For high throughput the DS9490 is faster than the others. It automates more
of the search.
(I suspect that the communication via serial or i2c or USB is the slowest
part and the USB
commands for search and reading of the DS9490 require fewer back and forth
coordination
than the other chips).
The
Am 29.09.2013 11:22, schrieb Vajk Fekete:
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
On 28 September 2013 18:37, brucek bru...@valinet.com wrote:
Well, I tracked down my ow network failure to the melted DS9490R. It looks
like it could have actually been a fire risk.
Anyway, I see new DS9490R’s at Newark for $33.81 + s/h ($20 min), and on
eBay for $66.00 (really?)
I also see
Why on earth are they so expensive?
Colin
On Sep 28, 2013, at 12:10, Colin Law clan...@googlemail.com wrote:
On 28 September 2013 18:37, brucek bru...@valinet.com wrote:
Well, I tracked down my ow network failure to the melted DS9490R. It looks
like it could have actually been a fire
On 28 September 2013 20:15, Colin Reese colin.re...@gmail.com wrote:
Why on earth are they so expensive?
I guess because they are only made in (relatively) small quantities
Colin L.
Colin
On Sep 28, 2013, at 12:10, Colin Law clan...@googlemail.com wrote:
On 28 September 2013 18:37,
Hello!
And in some cases the robots make them by hand.
-
Gregg C Levine gregg.drw...@gmail.com
This signature fought the Time Wars, time and again.
On Sat, Sep 28, 2013 at 3:19 PM, Colin Law clan...@googlemail.com wrote:
On 28 September 2013 20:15, Colin Reese colin.re...@gmail.com wrote:
I've been very happy with the LinkUSB, which I have used in three
installations.
http://www.ibuttonlink.com/collections/1-wire-masters/products/linkusb
On Sat, Sep 28, 2013 at 3:10 PM, Colin Law clan...@googlemail.com wrote:
On 28 September 2013 18:37, brucek bru...@valinet.com wrote:
Well,
Still $30. They should be $5 at most. The linkusb seems to 'solve' a problem I
never had.
On Sep 28, 2013, at 12:20, Don Veino sourceforge_...@veino.com wrote:
I've been very happy with the LinkUSB, which I have used in three
installations.
Here's a better question: why is the ds2490 $20 if you can find it, but the
ds2483 is $0.60 and widely available?
Colin
On Sep 28, 2013, at 12:20, Don Veino sourceforge_...@veino.com wrote:
I've been very happy with the LinkUSB, which I have used in three
installations.
On 28 September 2013 21:50, Colin Reese colin.re...@gmail.com wrote:
Here's a better question: why is the ds2490 $20 if you can find it, but the
ds2483 is $0.60 and widely available?
Because that is just a chip. The expense is in the connectors,
mechanical parts and particularly assembly and
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