Re: 1-wire to USB converter that can use 1820s directly

[nobody@xxxxxxxxxxxx (Dave Houston)]

I don't use 1-wire myself so am not familiar with its details but the
DS9490R appears to do at least part of what you ask. The datasheet indicates
there are Windows drivers for it.


http://www.maxim-ic.com/products/ibutton/products/1wire_adapters.cfm#USB
     http://pdfserv.maxim-ic.com/en/ds/DS9490-DS9490R.pdf

"Rod Speed" <rod.speed.aaa@xxxxxxxxx> wrote:

>I want to have a number of 1-wire 1820 sensors thruout the house,
>and want to minimise the cost of those so I can use them wherever
>it makes sense to have one like in all the fridges and freezers etc
>so I can do basic stuff like alarm on out of acceptable range etc.
>
>The obvious way to do those physically is to use phone extension
>leads with RJ11 connectors on each end. Just cut them in half
>and solder a 1820 on the bare end of each half. Then just connect
>them all in parallel using standard RJ11 sockets on vero etc or
>in punch down blocks etc.
>
>What I want is a fully assembled USB/1-wire converter
>that can be used to interface those to the PC.
>
>I also need at least a decent driver that can
>be used from VBA from Access or Excel etc.
>
>The stuff thats obvious on the web mostly dont use such
>unpackaged sensors. Cant see any reason why its not possible tho.
>
>It would be desirable to be able to use any standard
>1-wire sensor ics too, but not absolutely essential.
>