SparkFun
SparkFun Triple Axis Accelerometer Breakout - BMA400 (Qwiic)
The SparkFun Qwiic BMA400 Triple Axis Accelerometer Breakout offers a 3-axis acceleration sensor perfect for ultra-low-power applications on an easy-to-use Q...
The SparkFun Qwiic BMA400 Triple Axis Accelerometer Breakout offers a 3-axis acceleration sensor perfect for ultra-low-power applications on an easy-to-use Qwiic 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. This Qwiic breakout also includes 0.1"-spaced PTH pins connected to the sensor's communication interface and interrupt pins for applications that require a traditional soldered 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.
Features:
- Supply voltage range
- 1.72 - 3.6V
- Ultra-Low current consumption
- < 14.5µA at highest performance settings
- I2C interface (Qwiic-enabled)
- SPI interface (disabled by default)
- I2C addresses
- 0x14 (Default), 0x15
- Selectable acceleration ranges
- ±2/±4/±8/±16g
- On-chip interrupt features
- Auto-low power/auto wake-up
- 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)
- 2x Qwiic Horizontal Connectors
Documents:
Jargon buster
Plain-language definitions for the technical terms used above.
- breakout
- A breakout is a small circuit board that makes a tiny or hard-to-solder component easier to connect to with standard pins. It matters because this OLED module can be wired into a microcontroller project without needing to solder directly to the display’s fine contacts.
- Motion detection
- A camera feature that checks the image for changes that suggest something has moved. It matters because your project can use movement as a trigger instead of constantly saving or processing every frame.
- PCB
- A printed circuit board is a rigid board with copper tracks that connect electronic parts without loose wires. For this kit, the PCBs also form the airplane shape, so they are both the circuit base and part of the finished model.
- PTH
- Plated through-hole means the pin holes are metal-lined so solder connects the pad on both sides of the board. It is useful for connectors and headers that need a strong mechanical and electrical connection.
- Qwiic
- Qwiic is a plug-in connector system for I2C devices that uses small 4-pin cables, so you can connect compatible sensors without soldering. It matters because your controller or adapter also needs Qwiic, or you will need a cable or breakout to wire it up.
- SPI
- A fast serial communication bus often used for displays, memory cards, and sensors. It matters because SPI devices need specific pins for clock and data, plus a separate chip-select line for each device.
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Sensors & Input
SparkFun BMA400 Breakout Schematic
Schematic · 103.6 KB · Click any page to view full size
BMA400 Accelerometer Datasheet
Datasheet · 2.8 MB · Click any page to view full size
Supplier page — sparkfun.com
Supplier Description · 610.2 KB · Click any page to view full size
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