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This document deals with the construction of a device for interfacing sensor systems to a computer through the USB port. The design and sepciﬁcations of the device are given, along with the schematic, parts list, building instructions and usage information. Introduction Interfacing computer systems to the outside world is an important aspect of creating new computer music interfaces. We need a means of capturing data from sensors which can be easily used to control a our synthesis engines and musical systems. The interface described in this document gives us such a means. It is designed to be easily accessed on any operating system and from a large number of software applications without the need to write any drivers or additional software. The heart of this system is the ATMEL ATmega16 microprocessor. The ATmega16 is a low-power CMOS 8-bit microcontroller based on the AVR enhanced RISC architecture.
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