3-Axis Accelerometer Board (MMA7361) for Arduino etc.

This Accelerometer module is based on the popular Freescale MMA7361 three-axis analog accelerometer IC (datasheet here), which reads off the X, Y and Z acceleration as analog voltages. The accelerometer is very easy interface to an Arduino Microcontroller using 3 analog input pins, and can be used with most other microcontrollers, such as the PIC or AVR.
This module comes complete with 0.1" pitch pin headers soldered on, so it fits directly into a breadboard or prototype shield. This module's onboard voltage regulator allows for convenient operation at either 3.3 volts or 5 volts - a feature not found on the competitor's modules. No additional external components are required for operation.

Features:

2x5 pin 0.1" pitch pin headers
Two sensitivity modes ±1.5G and ±6G
5VDC & 3.3VDC operation
0G detect pin (for linear Free-Fall detection)
Sleep Mode to save on power
Integrated 1 pole low pass filter
Temperature Compensation
Self Test Mode for easy troubleshooting

PINOUT DETAILS
pin label	MMA7361 pin	signal name	signal description
3V3	6	V_DD	power supply input
5V
GND	5	V_SS	ground
X	2	X_out	X direction output voltage
Y	3	Y_out	Y direction output voltage
Z	4	Z_out	Z direction output voltage
SL	7	sleep	logic input pin to enable sleep mode
	8	not connected	no internal connection - leave unconnected
0G	9	0g-detect	linear freefall digital logic output signal
GS	10	sensitivity mode selection	When this pin is grounded or floating, the sensitivity is ±1.5G. Pull this pin high to enable the ±6G sensitivity mode.
	12	not connected	unused - for factory trim - leave unconnected
ST	13	self test
	14	not connected	unused - for factory trim - leave unconnected.

The MMA7361 IC, which lies at the heart of this module, has a logic input pin called "g-select" that is used to select one of two different sensitivity modes. In the default mode, which is selected by leaving g-select unconnected, the analog outputs reach their maximal level at ± 1.5g. This mode is well-suited for measuring the direction of Earth's gravitational field when the module is not accelerating.

If you ground the g-select pin, then you tell the accelerometer to scale its analog outputs to ±6g. This mode works well when you want to measure acceleration caused by motion, whose magnitude can easily exceed the other mode's ±1.5g ceiling.

This accelerometer module operates in the ±1.5g mode by default. To turn on the ±6g mode, bridge the solder pads labeled "R2".

Applications for this device on your Arduino include navigation, motion sensing, speed/movement data logging, etc. Hey, you could make an Arduino-based pedometer. The accelerometer board is a great add-on for your Arduino projects.

Depending on availability from the manufacturer, we stock either the 12-pin or the 10-pin variant of this module, both of which are listed as VUPN5915. Only the 12-pin module is pictured here. Here are the differences between the two variants:
The 12-pin module provides header pin breakouts for MMA7361 pin 8 (not internally connected), MMA7361 pin 12 (factory trim), and MMA7361 pin 14 (factory trim); the 10-pin variant does not provide these breakouts. None of these pins is used during normal operation of the module.
The 12-pin variant provides access to MMA7361 pin 10 (sensitivity mode selection) via a surface-mount solder pad; the 10-pin variant breaks that MMA7361 pin out to a header pin, labeled "GS".