Great work. This was on my 'todo' list.
Does it just appear as an i2c device to linux ? Stuart On 18 Apr 2012, at 10:06, Patryk wrote: > Hello > As I previously said I was trying to build USB 1-wire adapter. Today I > managed to get it working on a breadboard. > The main advantage is that it's cheap and easy to build from standard > parts. It uses 1-wire master DS2482-800 which is connected with i2c bus to > Atmega8 which is a USB to i2c converter. > Atmega8 is a widely available microcontroller I can even buy it at my > local electronics shop. It costs there about $2. It has to be programmed > before use. You can build a cheap programmer that uses parallel port if You > have > an old PC. > First I run i2c-tiny-usb http://www.harbaum.org/till/i2c_tiny_usb/index.shtml > but there was a performance issue. The read from DS18B20 took about 3 seconds > and without specifying the bus about 10. Compared to 1.5 with DS2480 and > similiar > time connected to vga i2c port. > Fortunately there is a derivative project from Till's i2-usb-tiny. It's from > project OpenServo. > It uses Atemga8 and has better performance because it uses some built in > i2c(do not know exactly)' > Here's the page with it > http://www.openservo.com/viewcvs/OpenServo/Interfaces/OpenServo_InterFace/?root=cvs > You can also buy it assembled in this shop it has other useful features. > http://www.robotfuzz.com/index.php?main_page=product_info&cPath=66&products_id=181 > > That's how it looks like on the breadborad. Atmega on the left then DS2482 > and one DS18b20 on the right. > http://www.fotosik.pl/pokaz_obrazek/pelny/ad26b46b4fb860dd.html > I also attach a schematic. > http://www.fotosik.pl/pokaz_obrazek/pelny/ab6a5fc5827cd013.html > > I'm now designing a board for it. > > > > -- > p4trykx<i2c-mega.sch.tar.7z>------------------------------------------------------------------------------ > Better than sec? Nothing is better than sec when it comes to > monitoring Big Data applications. Try Boundary one-second > resolution app monitoring today. Free. > http://p.sf.net/sfu/Boundary-dev2dev_______________________________________________ > Owfs-developers mailing list > Owfs-developers@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/owfs-developers ------------------------------------------------------------------------------ Better than sec? Nothing is better than sec when it comes to monitoring Big Data applications. Try Boundary one-second resolution app monitoring today. Free. http://p.sf.net/sfu/Boundary-dev2dev _______________________________________________ Owfs-developers mailing list Owfs-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/owfs-developers
