The MSA311 is a super small and low-cost triple-axis accelerometer. It's inexpensive, but has just about every 'extra' you'd want in an accelerometer:
Three-axis sensing, 14-bit resolution
±2g/±4g/±8g/±16g selectable scaling
I2C interface on fixed I2C address 0x62
Interrupt output
Multiple data rate options 1 Hz to 500 Hz
As low as 2uA current draw in low power mode (just the chip itself, not including any supporting circuitry)
Tap, Double-tap, orientation & freefall detection
The MSA311 is very similar to the MSA301, but is not a drop-in replacement. The I2C address has changed from 0x26 to 0x62!
This sensor communicates over I2C or SPI (our library code supports both) so you can share it with a bunch of other sensors on the same I2C bus. There's an address selection pin so you can have two accelerometers share an I2C bus.
We’ve of course broken out all the pins to standard headers and added a voltage regulator and level shifting so allow you to use it with either 3.3V or 5V systems such as the Raspberry Pi + Feather series or Arduino Uno respectively.
Comes with a bit of 0.1" standard header in case you want to use it with a breadboard or perfboard. Four mounting holes for easy attachment.
Note: The cable and board are NOT included
Revision History
As of 20th October - we've updated this PCB with Adafruit Pinguin to make a lovely and legible silkscreen - you may get the new PCB or the older version with vector fonts - both are identical other than the fancy silkscreen
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