Hi Paul Just some thoughts about the "non-addressable" chips. How about calling them SD for Single-Drop devices as opposed to MD for multi-drop devices.
All of these chips except the DS2705 (which I am not sure about) are on the march 1, 2004 non-obsolescence-letter from Dallas saying that eventually they will stop making them... unlike the other 1-wire chips. So I am not sure they are the best choice for new designs. Designers should look at this letter before making decisions about which chips to use in new designs BTW (it's available on the Dallas site). http://www.maxim-ic.com/qa/pdfs/non-obsolescence-letter.pdf Most can be made multi-drop when placed behind a DS2409.., I'd use the main channel for the chip connection and the aux for tagging... that way software can detect its abilities easily. The DS1821 is a special case as it takes over the 1-wire bus as you know, when active as a thermostat. Again it can be placed behind a DS2409. I'll build and make available a small circuit pcb for those interested in playing with this chip that will handle putting it into and out of programming mode. It will use the DS2409 so you can monitor the status of the thermostat while it's running from the net. Will be able to programmed in service directly thru the common network and device will be not be distance limited like the use of a DS9097E style interface would be. If anyone's interested, send me a note. Should only be a couple dollars of parts. In general I prefer the I2C thermostat chips though...so this is really more of why not than being the best answer possible. Ideas for it are welcome, contact me so I can judge interest.. Cheers, David Lissiuk [EMAIL PROTECTED] ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Owfs-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/owfs-developers
