Hardware - Accelerometers

For the TASKS, see my post Task 32 - the Triple Axis Accelerometer 


 
This is the MMA7361 triple-axis accelerometer break-out board.

Below is what MindKits have to say about it..

Description: This is a breakout board for Freescale's MMA7361L three-axis analog accelerometer.

The sensor requires a very low amount of power and has a g-select input which switches the accelerometer between ±1.5g and ±6g measurement ranges.

Other features include
* a sleep mode,
* signal conditioning, 

* a 1-pole low pass filter,
* temperature compensation,
* self test, and
* 0g-detect which detects linear freefall. 

Zero-g offset and sensitivity are factory set and require no external devices.

This breadboard friendly board breaks out every pin of the MMA7361L to a 9-pin, 0.1" pitch header.
The sensor works on power between 2.2 and 3.6VDC (3.3V optimal), and typically consumes just 400µA of current.
All three axes have their own analog output.

Features:

• Two selectable measuring ranges (±1.5g, ±6g)
• Breadboard friendly - 0.1" pitch header
• Low current consumption: 400 µA
• Sleep mode: 3 µA
• Low voltage operation: 2.2 V - 3.6 V
• High sensitivity (800 mV/g at 1.5g)
• Fast turn on time (0.5 ms enable response time)
• Self test for freefall detect diagnosis
• 0g-Detect for freefall protection
• Signal conditioning with low pass filter
• Robust design, high shocks survivability

Dimensions: 0.90 x 0.50"
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MindKits also have another (more expensive) one - the BMA180

For the TASKS, see my post Task 32 - the Triple Axis Accelerometer

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