2017-08-24, 06:24 AM
1-wire is originally designed to be used on short distances, e.g. chips on the same board.
It is owned by Maxim (Dallas), and here is their guideline for long lines:
https://www.maximintegrated.com/en/app-n...mvp/id/148
You should be able to drive up to about 200 m total cable length using a simple resistor pull-up according to Maxim.
If you use a 4.7k pull-up resistor, try replacing it with a lower value, e.g. 3.3k, 2.2k, 1.5k or 1k, and see which one works best.
It is owned by Maxim (Dallas), and here is their guideline for long lines:
https://www.maximintegrated.com/en/app-n...mvp/id/148
You should be able to drive up to about 200 m total cable length using a simple resistor pull-up according to Maxim.
If you use a 4.7k pull-up resistor, try replacing it with a lower value, e.g. 3.3k, 2.2k, 1.5k or 1k, and see which one works best.