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

["Rod Speed" <rod.speed.aaa@xxxxxxxxx>]

Dave Houston <nobody@xxxxxxxxxxxx> wrote

> 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.

Yeah, thats basically what the commercially
available USB/1-wire converters/adapters use.

> The datasheet indicates there are Windows drivers for it.

Yeah, tho I didnt find they are that convenient to use.

I actually have the Elektor USB/1-wire converter/adapter
and have implemented it, with some downsides drivers wise.
Should try the latest tho, its been a while since I did that.

> 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.