On Nov 6, 2010, at 10:16 AM, Harold Hallikainen wrote: > The web page on the project is a bit strange. > Hitting download brings up an ad That'd be the referral page rather than the web page itself, right? Looks like a blog I'll avoid. Hackaday is much better: http://hackaday.com/2010/10/29/tiny-usb-business-card/ And the original developer page: http://frank.circleofcurrent.com/cache/usbbusinesscard_details.htm > Does that chip have some USB hardware in it, or is it done in =20 > software? Software. The AVR is "well known" to be just barely able to fake low-=20 speed USB using software only. BillW --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .