Go Down

Topic: Ds18b20 long wire problem (Read 647 times) previous topic - next topic


Hello, well I'm developing a system to get the temperature but I need put 20 sensors but the distance its too long, so I was trying with cat 5 ethernet cable, first I try with 3 sensor on each wire (using one wire) but I lost many data, so I try with 2 sensors in each wire, and I'm using 220ohm resistors but its change depending the long of the wire, is this ok or what can I do.


Put the computer closer to the data,   and use some other means of transmission.


Maxim provides an appnote discussing this:


If you want better answers you should provide more detail as to your topology and how long your cables are.

Go Up

Please enter a valid email to subscribe

Confirm your email address

We need to confirm your email address.
To complete the subscription, please click the link in the email we just sent you.

Thank you for subscribing!

via Egeo 16
Torino, 10131