Has anyone every tried to bit bang a low speed USB interface with any Atemel chips?
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I have seen posts on this so it has been done and there are also AVRs with USB built in.
Searching this site should give you what you need.
You might also try Bitwise Systems for USB2 devices and FTDI for USB1.1 devices
Have a look for "Igorplug" for a bit-bang application.
i would also recomend FTDI for usb applications,
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