[elektro] DS1820

[SirLeslie]

Fekete Róbert wrote:
> Üdv a Nagyérdeműnek
>
> érdeklődnék hogy milyen messzire lehet a dallas DS1820 as hőmércéjét 
> vezetékelni a procitól?
> 10-20m ?
>
>
> előre is köszi!
>
> FRob
>
> www.harden.hu
> www.loudlink.eu
>
> "Minden megoldható legalább egyszer
> és ha már egyszer megoldható..."
>
>   

A bascom súgó szerint ezt a távot az 1wire bőven tudja -Using the 1 WIRE 
protocol résznél:

...
Cable lengths (this section is only for some limitation understanding)

For short runs up to 30 meters, cable selection for use on the 1-Wire 
bus is less critical. Even flat modular phone cable works with limited 
numbers of 1-Wire devices. However, the longer the 1-Wire bus, the more 
pronounced cable effects become, and therefore greater importance is 
placed on cable selection.
For longer distances, DS recommends twisted-pair-cable (CAT5).
DS standard examples show 100 meters cable lengths, so they say, that's 
no problem. They also show examples with 300m cabling, and I think I 
have seen something with 600-meter bus (but I cant find it again).
...