MEMS (sensors)

TO convert PDM data coming from the mic to PCM using HAL drivers functions.

How to understand zero "Magnetic sensor offset" of LSM303AH?

LSM303AH's datasheet specifies "Magnetic sensor offset" equal to 0 mgauss. This requires offset cancellation to be enabled. How should this value be interpreted? Is this zero offset feasible only in some particular conditions? Then, what offset can b...

How do I correctly read the LSM6DSL FIFO timestamps?

I'm doing research using the LSM6DSL to collect acceleration and angular rate data at 833 Hz from an array of IMUs. We are using the on-board FIFO so we can read back data blocks of data from each IMU. While reading back the acceleration and angular ...

Animal Activity detection and classification using MEMS Sensors

Hello, we are working on a product, to detect, classify and monitor the activity of a cattle, using a custom built ear tag, that will among other things have a MEMS sensor. I am an expert at embedded development, but dont really have any background o...

LIS3MDL sometimes freezes for around 63 seconds

We are using the LIS3MDL in conjunction with a microcontroller (STM32F051).In most cases, the sensor responds correctly to our initialization and provides its data with around 1.068 kHz.However we sometimes experience that the sensor freezes for arou...

Hello, I work on a product with LSM303AGR and STM300 module. The problem is : when the LSM303AGR goes to sleep, it works. After, I try to get EnOcean module to sleep, then the LSM303AGR consume 500µA. Any idea?

The SPI works well. I can asleep the sensor but when I try to asleep the EnOcean module, I see that the sensor consume near 500µA. I have put two pull down on SDI/SDO and SCL and two pull up on the CS_ACC and CS_MAG.

LSM6DSL Clock and sampling rate

We have an LSM6DSL sensor working in fifo mode. We are running it at 833 Hz but with the measured data, we are getting ~ 819 Hz. I am trying to investigate what the cause is. Can you tell me how accurate the internal clock is? If set properly, shall ...

LSM9DS1, noise coming on all channels when Accelerometer HPF is enabled

I am using a LSM9DS1, the datasheet doesn't clearly state the settings for HPF cutoff for accelerometer. Moreover, when I enabled HPF using Reg7_XL, I get 0.18g on all the axis, which is noise since my platform is stable. Can somebody help me with th...

General Information about AIS3624DQ

In regards to the AIS3624DQ, I have a few questions about the part:Page 31 of the Data Sheet, paragraphs 7.10, 7.11, 7.12, which are the X, Y, and Z axis’s acceleration outputs, the description only says “expressed as two’s complement. Could you plea...