connecting a ds2482-800 to arduino

Forum 2005-2010 (read only) Software Interfacing
1

hello friends,

i'm very new to this forum, and to electronics in general, and i'm pretty sure my question will denote that :wink: .
my wish was to call 1-wire sensors through a ds2482-800 master from an arduino, for a prospective application.
after browsing a lot of documents (with limited understanding, as you may presume), i came to the conclusion that the ds2482-800 is self-contained (including strong pullup) for any applications, and my way to connect it from arduino is a software serial (as i wish to use a cellular shield that will take up my real one) and power. of course i'd use a pcb to give it a professional allure :wink: .
would you please correct me if i'm wrong? any other feedback will be more than welcome.

best regards,
alex

2

Actually, you would not rely on SoftSerial. This is an I2C device and it would use the WIRE library. (analog pins 4 and 5 as I2C pins )

Lookup I2C in the "playground".

3

thanks a lot. i'll look there.
but do i need anything more, like pullup resistors etc?

4

yes, i see the ds2482 solution requires i2c, just thought i2c is serial.
since the analog pins are being masked by the cellular shield, i'm again considering using a virtual serial port with ds9097u-s09, which is an 1-wire serial port master adapter.

do you think it's feasible?
an alternative might be the link45/linkoem serial master adapter from ibuttonlink.

5

just thought i2c is serial

It is, but not at all like the Serial or SoftwareSerial which are both slower isochronous standards

6

9097U is great. I use one on my PC to attach my weather station.

How well you can get it working with Arduino though is another story. I tried a few times to wrap my head around the wacky DALLAS 1-wire interface examples for the serial device and decided it was just easier to talk to the one-wire bus directly with an Arduino I/O Pin.

7

ok, i understand the way to go is the direct one.
though i'd also try the mainroad.