4
2011-07-08
SparkFun
<p>
<b>Description:</b> This new version adds 2 standoff holes as well as an extra decoupling capacitor. The ADXL345 is a small, thin, low power, 3-axis accelerometer with high resolution (13-bit) measurement at up to ±16 g. Digital output data is formatted as 16-bit twos complement and is accessible through either a SPI (3- or 4-wire) or I2C digital interface. </p>
<p>
The ADXL345 is well suited to measures the static acceleration of gravity in tilt-sensing applications, as well as dynamic acceleration resulting from motion or shock. Its high resolution (4 mg/LSB) enables measurement of inclination changes less than 1.0°.</p>
<p>
Several special sensing functions are provided. Activity and inactivity sensing detect the presence or lack of motion and if the acceleration on any axis exceeds a user-set level. Tap sensing detects single and double taps. Free-fall sensing detects if the device is falling. These functions can be mapped to one of two interrupt output pins. An integrated, patent pending 32-level first in, first out (FIFO) buffer can be used to store data to minimize host processor intervention. Low power modes enable intelligent motion-based power management with threshold sensing and active acceleration measurement at extremely low power dissipation.</p>
<p>
<span style="font-weight: bold;">Features:</span></p>
<ul>
<li>
2.0-3.6VDC Supply Voltage</li>
<li>
Ultra Low Power: 40uA in measurement mode, 0.1uA in standby@ 2.5V</li>
<li>
Tap/Double Tap Detection</li>
<li>
Free-Fall Detection</li>
<li>
SPI and I2C interfaces</li>
</ul>
<p>
<b>Documents:</b></p>
<ul>
<li>
<a classname="" href="http://www.sparkfun.com/datasheets/Sensors/Accelerometer/ADXL345-BreakoutBoard-v13.pdf" target="_blank"> Schematic</a></li>
<li>
<a href="http://www.sparkfun.com/datasheets/Sensors/Accelerometer/ADXL345-BreakoutBoard-v13.zip">Eagle Files</a></li>
<li>
<a classname="" href="http://www.sparkfun.com/datasheets/Sensors/Accelerometer/ADXL345.pdf" name="" target="_blank"> Datasheet</a></li>
<li>
<a href="http://www.sparkfun.com/tutorials/240" target="_blank">Quickstart Guide</a></li>
<li>
<a classname="" href="http://www.sparkfun.com/datasheets/Sensors/Accelerometer/ADXL345-talktest.zip" name="" target="_blank">Example Code</a> (ATmega328)</li>
<li>
<a href="http://bildr.org/2011/03/adxl345-arduino/" target="_blank">Bildr Tutorial </a></li>
</ul>
<p>
<strong>Replaces: </strong><a href="http://www.sparkfun.com/products/9156" target="_blank">SEN-09156</a></p>
Triple Axis Accelerometer Breakout - ADXL345
http://www.sparkfun.com/products/9836
Accelerometer
Accel
Accelerometer Breakout
+/-2,4,8,16g
Digital
GND
VCC
CS
INT1
INT2
SDO
SDA
SCL