USB to i2c solutions

[JTerosky]

I concur with smercurio_fc.  We also originally used the Cal-Bay device and switched to the Aardvark.

[Opt_Ottawa]

Does any one use USB-to-I2C V2.1 with labview? It is manufactured by i2ctools (www.i2ctools.com), but did not provide the command for labview. Any idea?

Thanks,

Opt_Ottawa

[pflores]

If the device came with a dll file, then you could call the functions in the dll to interface with the device.

See this community post. You would already have the dll file, so you would be interested in steps 10 and later.

[GGT]

I've not got much experience with I2C, but this is what I've found with a few interfaces over the past couple of years. The 8451s can't work as slaves which was a requirement for my project (too difficult says NI - er, what!). Pity, my company bought four. Should've read the data sheet (thought I did). Tried Cal-Bay but never got them to work properly (well, at all, actually). Then found an I2C interface made by Calibre UK Ltd. No LabVIEW drivers or even a command line but came with a very workable DLL that I thought I could hook into with LabVIEW. Too late, effort was pulled on the project and I never got to try it. Still on my list of things to try before I die. Just my threepennethworth...

[Znatok]

We use this solution:

SUB-20 Multi Interface USB Adapter USB-I2C, USB-SPI, USB-GPIO, RS232, RS485, MDIO, Ir, LCD, PWM

They provide LabView compatible .NET cmponent and a lot of vi's here:

http://www.xdimax.net/forum/viewtopic.php?f=2&t=25

[Ibboh]

This is a very old thread but I was hoping someone knowledgeable could update the information in it.

It's mid-2015.... I want a single USB to I2C host-controller which:

- Is cheap (sadly rules out the usb-8541)

- Will work with the I2C 400 khz fast mode  

- Gives reliable results everytime.

- Supports LabView for idiots (me) ie. drivers/examples available to work with.

I see that there is the Aardvark and the Diolan are still out there.

Diolan $90 + shipping

Aardvark $275 + shipping

Dimax Sub-20 $79 + shipping

The Diolan is significantly cheaper than the Aardvark which is significantly cheaper than the NI-USB 8541.  The Dimax sub-20 is a wildcard...

Obviously the controllers are packaged up differently but from a simpletons perspective on programming and reliability what would people recommend and why?

Thanks in advance,

Ibboh

[Znatok]

Definitely SUB-20. Not only because of it's price but taking in account a "Supports LabView for idiots (me) ie. drivers/examples available to work with."

They have a full set of VI's drivers and samples, besides they provide a grate support even including writing a simple modules for you (they did it for me).

NI LabVIEW
SUB-20-VI-1.2.zip	1.2	09 Jan 2015		Comprehensive LabVIEW and LV2013+ vi modules pack
SUB-20-VI-1.0.zip	1.0	15 Nov 2013		Comprehensive LabVIEW vi modules pack

[NI-hilator]

Great discussion on USB to I2C solutions.  I'd to throw another one into the mix.  Has anyone used the USB to I2C Breakout board from Mayhew? http://mayhewlabs.com/products/usb-to-i2c-breakout  It uses the Silicon Labs CP2112.  It doesn't have LabVIEW drivers but has a dll and sample C and Visual Basic code. At $14.43 it might be worth putting the time into writing drivers.

[Zh137]

Good afternoon!
Please download the archive with the LABVIEW project again.
The link to the SUB-20-LabVIEW-0.1.zip and SUB-20-LabVIEW-0.2.zip archives in the previous message is no longer available.

[Znatok]

You can download latest version directly from the web site:

http://www.xdimax.com/sub20/sub20.html#DLD