The Adafruit MSA311 is a compact, low-cost triple-axis accelerometer with 14-bit resolution and a rich set of built-in motion detection features. Very similar to the MSA301 but with an updated I2C address (0x62 instead of 0x26), it includes tap/double-tap detection, orientation sensing, freefall detection, and configurable data rates from 1 Hz to 500 Hz.

Communicating over I2C, the MSA311 draws as little as 2 µA in low-power mode — ideal for battery-powered projects. The breakout includes a 3.3 V regulator and level shifting for compatibility with both 3.3 V and 5 V systems, plus STEMMA QT / Qwiic connectors for solderless wiring.

Key Features

• 3-Axis Accelerometer – 14-bit resolution with ±2g/±4g/±8g/±16g selectable range
• Motion Detection – Tap, double-tap, orientation, and freefall detection built in
• Configurable Data Rate – 1 Hz to 500 Hz output options
• Ultra-Low Power – As low as 2 µA in low-power mode (sensor only)
• Interrupt Output – Hardware interrupt pin for event-driven sensing
• I2C Interface – Fixed address 0x62, with address selection pin for two sensors on one bus
• STEMMA QT / Qwiic Connectors – Solderless I2C connection (cable not included)
• 3.3 V and 5 V Compatible – On-board regulator and level shifting
• Mounting Holes – Four holes for secure attachment

Ideal For

• Motion and gesture detection
• Tilt and orientation sensing
• Wearable electronics and activity tracking
• Battery-powered projects requiring low-current accelerometry

Package Contents

• 1× Adafruit MSA311 Triple Axis Accelerometer Breakout (assembled)
• 1× Header strip

Resources

• STEMMA QT Overview