UG-065 Datasheet, PDF (1/12 Pages) Analog Devices – Battery-powered for portable applications

Evaluation Board User Guide
UG-065
One Technology Way • P.O. Box 9106 • Norwood, MA 02062-9106, U.S.A. • Tel: [phone] • Fax: [phone] • www.analog.com
iMEMS ADXL345/ADXL346 Inertial Sensor Datalogger and Development Board
FEATURES
Ultralow power ADXL345/ADXL346 accelerometer
Inertial sensor development board
Datalogs onto MicroSD card
Fully programmable via serial interface; firmware examples
provided
Battery-powered for portable applications
REQUIREMENTS
2 AAA batteries
MicroSD card and card reader (for datalogging)
Computer with serial port (for programming)
GENERAL DESCRIPTION
It is often a timesaver in hardware development to make progress
on the firmware and the hardware simultaneously. The challenge is
that it proves difficult to develop firmware before the hardware
exists. The iMEMS® ADXL345/ADXL346 development board
is an easy-to-use tool that facilitates prototyping by providing
a platform that can be duplicated in the final application.
Additionally, the development board can be configured as a
datalogger and can be used to gather data for refining algorithms,
tuning thresholds, and generally familiarizing oneself with
accelerometer data.
Figure 1. ADXL345 Inertial Sensor Development Board
Two AAA batteries power the development board, and thus it
integrates seamlessly into portable applications. Communications
and processing are done by an ARM7-based ADuC7024 micro-
controller, and the interface provided is fully reprogrammable.
Moreover, all ADuC7024 pins are broken out into headers to
facilitate design of compatible expansion boards. Data is logged
onto a MicroSD memory card, providing essentially unlimited
memory capacity and operating system versatility. Data is stored in
a text file; therefore, there is no need to install any software to
operate the board or read data. Software is provided to assist
with programming the board.
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
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