A 32bit version of USB bit whacker - more pins, more memory, more power, more fun...

JTAG and SPI AVR8 interface.

AVR-CDC is a pure SW based USB-RS232C interface using the CDC (Communication Device Class) protocol. Although the bulk endpoint required for CDC is not allowed within the low-speed USB standard, it works fine on major platforms.

A Microchip PIC based USB sound card

Open source USB sensor box

This is an example that demonstration how to control stepper motor via USB interface.

The CUI provides the necessary electronics to capture sensor input or control actuator output.

The idea for a 1-key keyboard comes from the need as an interaction designer to make “cheap, quick and dirty prototypes.” When creating a quick screen-based demo in e.g. Adobe Flash, a common way of quickly prototyping physical actions is to assign actions to certain key presses on a keyboard.

Just a joke for April Fool's Day, but I believe it can be used in some other way.

A PIC-based USB connected IR receiver.