Max wire length DS18b20 temp sensor?

Hardware
1

Hi all,

I have a DS18b20 with a 1m (39 inches) cable. I’d love to be able to extend it so I have 2 questions :

  1. what’s the max length of cable I can get away with?
  2. what’s the best cable to use?

Thanks in advance!

2

Hi,

From memory, I think the 1-wire bus is OK out to at least 10 metres. The data rate is very slow (approx 18kbits per second), therefore there is no need for special cables.

Jim

3

Excellent, thanks for the information, I’ll give it a go.