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I/O Explorer
™ USB Reference Manual
Revised April 15, 2016
This manual applies to the I/O Explorer USB rev. C
DOC#: 502-174
Copyright Digilent, Inc. All rights reserved.
Other product and company names mentioned may be trademarks of their respective owners.
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Overview
The Digilent I/O Explorer USB is a USB peripheral device that allows programmatic access from a personal
computer to various external Input/Output (I/O) devices.
Using the Digilent Adept Software Developer's Kit (SDK) and the Digilent Adept Runtime System it is possible to
write application programs running under either the Microsoft Windows or Linux operating systems that perform
The I/O Explorer board.
I/O Explorer USB block diagram.
Features include:
Two Atmel AVR microcontrollers:
AT90USB646 and ATmega165P
USB 2.0 Full Speed device
Fully software compatible with the Digilent
Adept Runtime system
C/C++/C#/Visual Basic callable API set using
the Digilent Adept System Software
Developer’s Kit (SDK)
5 12-pin and 1 6-pin Pmod ports
16 discrete LEDs
8 slide switches
4 push button switches
4 position DIP switch
2 rotary encoders with integral push button
speaker/buzzer
Two 10-bit A/D inputs
Four 12-bit D/A outputs
Up to 52 digital input/output pins
Connectors for up to 8 RC servos
1 hardware SPI master port
Up to 3 additional software SPI master ports
UART interface port
Provision for 4 additional RC servos using
Digilent PmodCON3
Provision for 2 additional quadrature
encoders via Pmod port
Provision for up to 8 additional 10-bit A/D
inputs using servo connectors
Multiple power supply options, including USB
powered
ESD protection and short circuit protection for
all I/O pins.
