AVR-Chat

How about the AT90USBKEY, Sander?

       http://www.atmel.com/dyn/products/tools_card.asp?tool_id=3879

32 bucks at either Mouser or Digi-Key.  Both have stock.


REB



Sander Pool wrote:
> Hi,
>
> as I wrote earlier my butterfly based project is probably dead. So I'm 
> considering alternatives. The goal is a focuser for my telescope and it 
> will need to talk to a host PC. At first I intended to use RS232 for 
> that but as you know many laptops don't have that interface any more so 
> native USB seems more natural. I was pleasantly surprised at how easy it 
> is to hook up an AT90USBxxx device to a USB port. Two zeners is all it 
> takes. The devices also aren't expensive. So I'm a little surprised I 
> can't find any boards out there that use one of these chips, put a USB 
> connector on the board and provide pads for the IO pins to an experiment 
> area ala Graham's butterfly carrier. Graham, if you don't have one 
> planned yet, this may be something to consider. We can talk more about 
> features if you like but it would basically be a butterfly carrier with 
> an AT90USB82 instead of a bf.
>
> Maybe I missed one so if you know of someone who sells such a starter 
> kit, please let me know. I know Atmel sells a few kits but they have too 
> many bells and whistles for my purposes. Then again if you think I 
> missed one that's worth trying, please let me know.
>
> I've also looked at http://gnusb.sourceforge.net/ and may try to port 
> that to mega163 or mega48 (I have those in my parts box). But I think 
> I'd prefer to use a dedicated USB enabled AVR.
>
> Thanks,
>
>     Sander
>
>
>
>