AVR V-USB Library Dev Board

AVR V-USB Library Dev Board

Demo / Development Board for the V-USB Library running on an ATmega88/168/368 microcontroller

The library provides a software implementation of a low speed USB device, useful to emulate keyboard, mice, joypads and other USB devices without hardware USB support.

Official V-USB website: https://www.obdev.at/products/vusb/index.html

This demo board is very simple to replicate and just connects the USB D+/D- lines to the appropriate pins of the MCU. The ATMega is powered at 3.3V from the 5V USB source via a cheap voltage regulator, this way only resistors are needed on the data lines and no zener diodes are required.