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Overview
The ADXL345 is a small, thin, low-power, 3-axis accelerometer with high resolution (13-bit) measurement at up to
±16 g .The ADXL345 Evaluation board is a simple evaluation board for the ADXL345 Triple Axis Digital
Accelerometer. The evaluation board includes an SD card socket for datalogging, and a USB port for serial
communication with a computer. The device, which is powered from two AA batteries, allows the user to manipulate
the register settings of the ADXL345 using a serial command interface. All of the data read from the accelerometer
can be logged to the microSD card via a FAT32 file system. The evaluation board comes with the Arduino Serial
Bootloader installed; this means the device can be reprogrammed via the USB connector using the Arduino IDE, as
well as by standard programming methods using the 6 pin ISP header.
Features
ADXL345 Triple Axis Accelerometer
•
microSD Card Socket for FAT32/FAT16 Logging
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Atmega328 with Arduino Bootloader
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USB Connector for Serial Communication
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Hardware Description
© 2009 SparkFun Electronics, Inc. All Rights Reserved. Product features, specifications, system requirements and availability are subject to change without notice.
ADXL345 (SEN-09364) is a trademark of SparkFun Electronics, Inc. All other trademarks contained herein are the property of their respective owners.
ADXL345_UG_090914
Figure 1
Figure 2
ADXL345 Evaluation Board
2009.09.14
1
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Summary of Contents for Sparkfun Electronics ADXL345
- Page 1 © 2009 SparkFun Electronics, Inc. All Rights Reserved. Product features, specifications, system requirements and availability are subject to change without notice. ADXL345 (SEN-09364) is a trademark of SparkFun Electronics, Inc. All other trademarks contained herein are the property of their respective owners.
- Page 2 © 2009 SparkFun Electronics, Inc. All Rights Reserved. Product features, specifications, system requirements and availability are subject to change without notice. ADXL345 (SEN-09364) is a trademark of SparkFun Electronics, Inc. All other trademarks contained herein are the property of their respective owners.
- Page 3 There are three status LEDs on board the ADXL345 Evaluation Board. The STAT1 LED (Red), is used to tell the user when data is logged to the SD card. Every time the device logs a buffer to the SD card, the LED will flash on and off.
- Page 4 There are 3 different types of commands that can be entered: Read, Write and Start. The read command is used to read the value of a register on the ADXL345 while the write command is used to write a value to a register on the ADXL345.
- Page 5 S (Resume logging mode) Writing these values to the command interface will configure the ADXL345 to detect a single tap on the Z axis, and generate an interrupt on the INT1 pin. If these commands are successfully entered, you will see the STAT2 LED blink whenever the evaluation board is tapped.
- Page 6 © 2009 SparkFun Electronics, Inc. All Rights Reserved. Product features, specifications, system requirements and availability are subject to change without notice. ADXL345 (SEN-09364) is a trademark of SparkFun Electronics, Inc. All other trademarks contained herein are the property of their respective owners.
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