Interfacing with Dallas 1-Wire weather station

[bcd]

Thanks Pete,

I am downloading the N&V article for a bit of a look at how its done.

I am glad the v3 AAG kit is now using the A/D to measure the wind direction - I didn't fancy trying to decode the original method that used the series of one-wire switches with reed switches.

Bill.

[Mith]

I did purchase a version 3 one wire weather station from AAG this past year, that's what is connected to my weather server. I still have the original Dallas weather station with the 'ID Tags' for each of the wind directions. I don't think it would have been that difficult to deal with now that I have spent so much time immersed in one wire land. Dallas expected everyone to use their search rom function to 'read' what ID's are available in a given family then determine wind direction based on what came back. That routine is very difficult and takes a lot of processing power to implement. I think the way I would do it would be to go through a series of match rom requests and determine what was available at any given time. It would be far faster than doing a search rom for a specific family.

Somewhere I have a copy of the original Nuts & Volts article that explains the wind speed counter. Remember that the v3 board from AAG has two magnets on the wind speed anemometer vs 1 on the Dallas so you get two ticks per revolution. If you need the article I will try to dig it up.

Let me know if you need anything.

[Mith]

I found the article. Parallax has an archive of nuts and volts columns that pertain to basic stamps.

http://www.parallax.com/dl/docs/cols...3/col/nv82.pdf

Pete