p4trykx <[email protected]> wrote: > Fist remember that Raspis i2c runs at 3.3V and won't tolarate higher > volatges.
This is why I ask. > For testing you can power DS2483 with 3.3V. > However the official release does not yet support DS2483. It should be > added to the next one. This is not a problem, I already succeeded in compiling the CVS version of owfs on Raspbian Wheezy and the I2C driver is included in this distribution. > Raspi has some pull-up resistors so for testing on a breadboard you don't > need any but > if you are planning a board it should be 4.7 kOhms or less I think. > I read it here > http://dsscircuits.com/articles/effects-of-varying-i2c-pull-up-resistors.html > They can be as small as 0.125 W Looking at the Schematic I can see that there are 1.8kΩ resistors on the raspberry pi board. So for now I will just assume that I won't need additional external ones. > AFIK the SLPZ is the pin which selects the voltage of i2c port. DS2483 can > operate 1-wire at 5V and i2c at 3.3v simultaneously so you have to connect > SLPZ to Raspberrys 3.3 V. OK, sounds reasonable. Sven -- /* * Wirzenius wrote this portably, Torvalds fucked it up :-) */ (taken from /usr/src/linux/lib/vsprintf.c) /me is giggls@ircnet, http://sven.gegg.us/ on the Web ------------------------------------------------------------------------------ Monitor your physical, virtual and cloud infrastructure from a single web console. Get in-depth insight into apps, servers, databases, vmware, SAP, cloud infrastructure, etc. Download 30-day Free Trial. Pricing starts from $795 for 25 servers or applications! http://p.sf.net/sfu/zoho_dev2dev_nov _______________________________________________ Owfs-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/owfs-developers
