MEMS (sensors)

Ask questions and find answers on ST MEMS sensors, such as the LSM6DSV and the LSM6DSL. Learn how to use the SensorTile.Box, and STEVAL kits.

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Forum Posts

LSM6DSL 26hz low power mode consumes too much current.

We are using the LSM6DSL chip in SPI mode with the FIFO_CTRL5 and the CTRL1_XL registers set to 26Hz.The gyro is not used. CTRL6_C's XL_HM_MODE is set to '1' to disable high performance mode.When we are not using the LSM6DSL we set both the FIFO_CTRL...

MEMS - LSM9DS1 I2C Addressing Issue

I interfaced LSM9DS1 with TI micrcontroller TMS320F28035 with I2C protocol. The LSM9DS1 is SDO_A/G pin is pulled low, so that it can be addressed with 0x6A. But what I observe is..Whenever I power the board up, it does not respond with 0x6A and respo...

SAdde.18 by Associate II
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  • 2 replies
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LPS22HB - BDU feature

I'm using the device in STREAM mode, with BDU=1.The datasheet says that PRESS_OUT_H must be the last read (enables an update).In one of my experiments it appears that it's actually a read from TEMP_OUT_H that causes an update.I've also noticed that s...

Eric V by Associate
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  • 1 replies
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LSM9DS1 - Component positioning for magnetometer data coherence

Hi,I am using a LSM9DS1 IMU on a custom PCB for the development of a dead reckoning feature.First step is quaternion calculation, and in order for this to be precise and reliable, sensors data have to be too. However, I'm having issues with the magne...

PBogr by Associate
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  • 2 replies
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IIS3DHHC lost factory calibration

I've done a lot of testings with two IIS3DHHC and everything seems fine. Suddenly one of the IIS3DHHC seems to lost the factory calibration. Is this possible? A lot of the tests have been done below freezing point -10C degree.In our solution, the Vdd...

JNygr by Associate II
  • 958 Views
  • 4 replies
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Using IIS328 for tilt measurement: is there calibration required for angle accuracy of less than 3°? What is the long-term stability after a calibration?

I want to measure the tilt angle with an accuracy of +/-3°, with the IIS328 accelerometer. The datasheet states that the sensitivity varies between 0.9...1.1 mg/digit. Does this variation also apply between the axis, so that e.g. X-axis can have sens...