Re: [Owfs-developers] Raspberry GPIO bus master

2016-11-02 Thread Loren Amelang
> Date: Tue, 1 Nov 2016 19:11:45 +0100 > From: Jan Kandziora > Subject: Re: [Owfs-developers] Raspberry GPIO bus master > > Am 01.11.2016 um 16:10 schrieb Markus Gaugusch: >> >> 1.) Which value should the pull-up resistor have? I found a posting from >> Jan

Re: [Owfs-developers] Raspberry GPIO bus master

2016-11-01 Thread Gregg Levine
Hello! A completely strange thought crossed my mind, what about building it from source? - Gregg C Levine gregg.drw...@gmail.com "This signature fought the Time Wars, time and again." On Tue, Nov 1, 2016 at 2:11 PM, Jan Kandziora wrote: > Am 01.11.2016 um 16:10 schrieb Markus Gaugusch: >> >>

Re: [Owfs-developers] Raspberry GPIO bus master

2016-11-01 Thread Jan Kandziora
Am 01.11.2016 um 16:10 schrieb Markus Gaugusch: > > 1.) Which value should the pull-up resistor have? I found a posting from > Jan that 4k7 is wrong, although this value can be found everywhere. > The slave chips can sink 4mA. This means at 3.3V, the pullup can go down as low as 825Ω without dama

[Owfs-developers] Raspberry GPIO bus master

2016-11-01 Thread Markus Gaugusch
Hi, For a small installation I'd like to use no specific bus adaptor (ds2483...) but just the w1-gpio driver from the kernel. I want to connect two to four DS18S20 using about 3m cable (no twisted pair, just parts of a long ribbon cable). I know this topic has been here several times, but I do