DIY USB password generator

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As a finale to my V-USB tutorial series, I implemented a USB HID keyboard -based password generator by using a ATtiny85. I managed to cram the complete circuit into a USB memory stick enclosure.

AVRfreaks project page:

Youtube video showing it in action:

Details of the construction and inner workings in my blog (also included in the AVRfreaks project page in PDF format as a backup):