The SparkFun Qwiic BMA400 Micro Triple Axis Accelerometer Breakout offers a 3-axis acceleration sensor perfect for ultra-low-power applications on an easy-to-use Micro Qwiic format breakout board. Dubbed the first "real" ultra-low power acceleration sensor, the BMA400 is perfect when used in both wearable and smart home applications. Where this sensor shines, however, is its ability to distinguish between critical situations and false signals by avoiding false alarms. The Qwiic system allows for integration into your I²C system with no soldering required. While the Micro size does not allow for a traditional 0.1"-spaced PTH header for communication, the board does route an interrupt and ground pin to a through-hole connection.

The BMA400 from Bosch Sensortech^© has a full scale acceleration range of ±2/±4/±8/±16g with exceptionally low current consumption of < 14.5µA while operating at its highest performance settings. The sensor also includes a complete feature set for on-chip interrupts including auto wakeup/low power, step counter, activity recognition, orientation detection and tap/double tap.

The SparkFun Qwiic Connect System is an ecosystem of I²C sensors, actuators, shields and cables that make prototyping faster and less prone to error. All Qwiic-enabled boards use a common 1mm pitch, 4-pin JST connector. This reduces the amount of required PCB space, and polarized connections mean you can’t hook it up wrong.

Qwiic Micro is our smallest I²C-supported board form-factor yet! At only 0.75in. by 0.30in. (or 24.65mm by 7.62mm for metric friends), Qwiic Micro is perfect for projects and applications that have space or weight concerns. With just a single Qwiic connector, Micro boards work great alongside the Qwiic Multiport or at the end of a Qwiic daisy chain.

• Qwiic Micro Sized Board (0.75in x 0.30in / 19.05mm x 7.62mm)
• Supply voltage range
  • 1.72 - 3.6V
• Ultra-Low current consumption
  • < 14.5µA at highest performance settings
• I²C interface (Qwiic-enabled)
• I²C addresses
  • 0x14 (Default), 0x15
• Selectable acceleration ranges
  • ±2/±4/±8/±16g
• On-chip interrupt features
  • Auto-low power/auto wakeup
  • Step counter
  • Activity recognition (walking, running, standing still)
  • Motion detection
  • Orientation detection
  • Tap/double tap
• Output data rate range
  • 12.5 - 800Hz (Normal Mode)
  • 25Hz (Low-Power Mode)
• 1x Horizontal Qwiic Connection Port

• Schematic
• Eagle Files
• Board Dimensions
• Datasheet (BMA400)
• Hookup Guide
• Qwiic Info Page
• BMA400 Arduino Library
• GitHub Hardware Repo