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

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

Dave Houston <nobody@xxxxxxxxxxxx> wrote:

> Turning once again to your initial post...

> 1. You asked for "a fully assembled USB/1-wire converter".
> The DS9490R meets your criteria.

Yeah, tho I was essentially asking if there was more than
just one flavor of those, particularly on how they drive the
1-wire bus, which might make a difference when driving
a string of 1820s. Its clear from Pete Anderson's site and
others that strings of 1820s do work fine, the only real
question was whether the DS9490R will drive them as
effectively as Pete Anderson's design which is known to work.

> 2. You asked for "a decent driver that can be used
> from VBA from Access or Excel etc." Maxim has two
> 1-wire APIs that are copiously documented at...

> http://files.dalsemi.com/auto_id/softdev/owdocs/Docs/1-Wire_SDK_Help.html

Yeah, tho I should have said more clearly that a decent
ActiveX control is rather more convenient to use with VBA.

I was hoping that someone flogging those DS9490Rs
like www.hobby-boards.com would have a link to one.
Havent found one yet tho.

> Whether or not they will run afoul of the FCC's anti-indecency
> crusade, I can't say. I don't do 1-wire so am not interested in
> delving deeper into the nuts and bolts. The COM version can
> be used from VB Script so it should be usable from VBA.

It should indeed.

> There's a link on the above cited page to a "developers list" which
> is probably where you should be spending your time rather than
> wasting the time of others here. If you're unable to make use of
> the APIs yourself, maybe you can find a reference to an Active-X
> control or find someone willing to create one via the developers list.

> Now to add this new identity to my killfile.

It isnt a new identity, I've been using it for decades now.

And I dont actually give a flying red fuck
what you do or do not choose to read.


> "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.