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
prediction "stock will last for years"
Your best bet is to get any clone that uses the ds2480 chip and some sort
of usb serial port. As far as I know, the ds24080 is abou the same
functionality as the ds2490, just missing the native usb interface.
Hope the members with low level programming experience will confirm/debate
that the 2480 is same level as 2490.
all best,
Vajk
On Sun, Sep 29, 2013 at 9:18 AM, Martin Patzak (GMX)
<martin.pat...@gmx.de>wrote:
> 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, brucek 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 a Bulgarian one based on Chipset: FT232RL and DS2480B with
> terminals for about $33 with shipping, and a Chinese one USB9097 with
> 3.5mm TRS for $22.50 with shipping.
>
> Anyone have any experience with these cheapo adaptors?
> Bruce
>
>
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