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

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

No <no@xxxxxxxx> wrote:
> In article <4agnheFspmn9U1@xxxxxxxxxxxxxx>, rod.speed.aaa@xxxxxxxxx
> says...
>> 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.

> Perhaps it is just that I'm tired,

Likely.

> but are you looking for an "I can solder" solution or
> an "I can't solder" solution? (I need more sleep.)

I would have thought that was clear
from 'What I want is a fully assembled'

While I can and do solder, I was hoping someone
had designed their USB/1-wire converter/adapter
to provide enough 1-wire power to be able to
handle a decent number of 1820s as supplied.

If I cant find that, it would be no big deal to have
a single extra bit between the converter/adapter
and the 1-wire bus that provides that extra power
and I am happy to solder that up.

> For the first: www.usbmicro.com

Cant see that that is a very viable approach. It makes more
sense to use a standard USB/1-wire converter/adapter
and do something to provide some more 1-wire power.