Biglietto da visita USB

12 anni fa

[Frank Zhao] put together a USB business card. It’s even got the instructions printed right on the silk screen of the PCB explaining how it should be used. He based the design around an AVR ATtiny85 microcontroller. It runs the V-USB package that handles USB identification and communication protocols. The rest of the hardware is pretty standard, the uC draws power from the 5V USB rail, with a couple of 3.6V Zener diodes to drop the two data lines down to the proper level.

1. Plug into USB port
2. Wait for device to be ready
3. Open Notepad (or similar)
4. Press Caps Lock three times
5. Watch the magic

NT!

Via Hack a day

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