410-216 Digilent

1300 Henley Court Pullman, WA 99163 509.334.6306 www.digilentinc.com chipKIT Basic I/O Shield Reference Manual Revised August 27, 2013 This manual applies to the chipKIT Basic I/O Shield rev. C Overview The chipKIT Basic I/O Shield is an input/output expansion shield designed for use with chipKIT microcontroller boards such as the Uno32, uC32, and the Max32. These boards are based on the popular Arduino IDE open- source hardware prototyping platform. The Basic I/O Shield provides a range of input/output devices for both beginners and advanced users. It provides simple digital input devices such as switches and buttons, and digital output devices such as discrete LEDs and 2 2 high-current open FET drivers. It also provides more advanced devices such as an I C EEPROM, an I C temperature sensor, an organic LED graphic display, and a potentiometer for use as an analog input device. The Basic I/O Shield has the same form factor as the Uno32 board, but is also useable with the Max32 board. Features include: A 128x32 pixel OLED graphic display. 2 An I C temperature sensor. 2 A 256Kbit I C EEPROM. 2 An I C daisy chain connector. Four push buttons. Four slide switches. Eight discrete LEDs. Four open-drain FET drivers. An analog potentiometer. The chipKIT Basic I/O Shield. Copyright Digilent, Inc. All rights reserved. DOC : 502-216 Page 1 of 13 Other product and company names mentioned may be trademarks of their respective owners. chipKIT Basic I/O Shield Reference Manual 1 Hardware Overview The Basic I/O Shield has the following hardware features: 1. Pushbuttons Four pushbuttons provide discrete momentary-contact digital inputs. These can be accessed using the digitalRead function. 2. Slide Switches Four slide switches provide discrete digital inputs. These can be accessed using the digitalRead function. 3. J2: Shield Power Connector This connector receives power from the chipKIT microcontroller board. 4. J3: Analog Signal Connector Pin 1 (analog signal A0) is connected to a potentiometer. Pins 5 and 6 (labeled A4 and A5) provide 2 2 2 access to the I C signals SDA and SCL for the I C bus. The I C bus is used to access the temperature 2 sensor and the EEPROM and for the I C daisy chain connector. Copyright Digilent, Inc. All rights reserved. Page 2 of 13 Other product and company names mentioned may be trademarks of their respective owners.