Adafruit Precision NXP 9-DOF Breakout Board - FXOS8700 FXAS21002

Adafruit Precision NXP 9-DOF Breakout Board - FXOS8700 FXAS21002

Adafruit Precision NXP 9-DOF Breakout Board - FXOS8700 FXAS21002

17,94 VAT INCLUDED

In stock

17,94 VAT INCLUDED

Availability: 1 available COD: AD3463 Categories: , , Tag:
Quantity discounts
1-2 17,94
3-5 17,58
6+ 17,22

Description

The NXP Precision 9DoF breakout combines two of the best motion sensors we've tested here at Adafruit: The FXOS8700 3-Axis accelerometer and magnetometer, and the FXAS21002 3-axis gyroscope.

These two sensors combine to make a nice 9-DoF kit, that can be used for motion and orientation sensing. In particular, we think this sensor is ideal for AHR-based orientation calculations: the gyro stability performance is superior to the LSM9DS0, LSM9DS1, L3GD20H + LSM303, MPU-9250, and even the BNO-055 (see our Gyro comparison tutorial for more details).

Compared to the BNO055, this sensor will get similar orientation performance but at lower price because of the calculations are done on your microcontroller, not in the sensor itself. The trade off is you will sacrifice about 15KB of Flash space, and computing cycles, to do the math 'in house.'

To make it fast and easy to get started, we have a version of AHRS that we have adapted to work over USB or Bluetooth LE. Load the code onto your Arduino - compatible board and you will get orientation data in the form of Euler angles or quaternions! It will work on ATmega328 (the fusion code is 15KB of flash) but faster / larger chips such as M0 or ESP8266 will give you more breathing room.

Each board comes with two chips soldered onto a breakout with 4 mounting holes. While the chips support SPI, they don't tri-state the MISO pin, so we decided to go with plain I2C which works well and is supported by every modern microcontroller and computer chip set. There's a 3.3V regulator and level shifting on the I2C and Reset lines, so you can use the breakout safely with 3.3V or 5V power / logic. Each order comes with a fully assembled and tested breakout header and a small strip of header. Some light soldering is required for the header if you want to use in a breadboard.

Our tutorials will get you started with wiring diagrams, pinouts, assembly instructions and library code with examples!

I know what makes this so 'Precision'-y, eh?

Glad you asked! This particular sensor combination jumped out at us writing the Comparing Gyroscopes learning guide since the FXAS21002 exhibited the lowest zero-rate level of the gyroscopes we've tested, (converted to degrees for second for convenience sake):

  • At +/- 2000 dps 3.125 dps
  • At +/- 250 dps 0.3906 dps

The zero-rate level is important in orientation since it represents the amount of angular velocity to gyroscope will report when the device is immobile. High zero-rate levels can cause all kinds of problems in orientation systems if the data is not properly compensated out, and distinguish zero-rate from actual angular velocity can be non-trivial. This is particularly important in sensor fusion algorithms where the gyroscope plays an important part in predicting orientation adjustments over time. A high zero-rate level will cause constant rotation even when the device is immobile!

10-20 times these zero-rate levels, which is why we consider this particular part need. There is little work to do out of the box to get useful, actionable data out of it.

The NXP Precision 9DoF board consists of two separate ICs, described in detail below:

FXOS8700 3-Axis Accelerometer / Magnetometer

  • 2-3.6V Supply
  • ± 2 g / ± 4 g / ± 8 g adjustable acceleration range
  • ± 1200 µT magnetic sensor range
  • Output data rates (ODR) from 1.563 Hz to 800 Hz
  • 14-bit ADC resolution for acceleration measurements
  • 16-bit ADC resolution for magnetic measurements

FXAS21002 3-Axis Gyroscope

  • 2-3.6V Supply
  • ± 250 / 500 / 1000 / 2000 ° / s configurable range
  • Output Data Rates (ODR) from 12.5 to 800 Hz
  • 16-bit digital output resolution
  • 192 bytes FIFO buffer (32 X / Y / Z samples)

Datasheets, PCB CAD files, and Fritzing objects available in tutorial

Product Dimensions: 28.3mm x 20.5mm x 3.0mm / 1.1 ″ x 0.8 ″ x 0.1 ″

Product Weight: 2.1g / 0.1oz

Product page

Tutorials:

Additional information

Weight 0.83 lbs
Dimensions 5 × 1 × 3 cm
Brand

Adafruit

Maybe your're interested in…

You just added this product to your cart:

EnglishFrenchGermanitalianEspañol