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Questions tagged [mems]

MEMS are often times shrunken down versions of existing mechanical and electrical components. The size of devices ranges from 0.02 to 1.0 millimeter.

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Definition by Atomica

14 questions
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Parsing LSM6DSL raw values

I'm trying to parse the values given from a device with a LSM6DSL chip (gyroscopic and acc.) and I'm having a hard time parsing the data properly for positioning and angle. From the vendor I've received the information that the unit is running on a…
DevionNL
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MPU9250 IMU Accelerometer and Gyro Data Format

From the data sheet, it can be found that each of the six output channels of MPU9250 has 2 bytes and 16 bits resolution. I was wondering about the 16 bits binary values, are they in the format of two's complement? Or when the sensor is stationary,…
zj_yyzr
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Is there a nice way, in Python, to measure the number of memory accesses, or mems, used by a function?

When people ask about memory, they're often asking how much memory is being used, but this is not what I mean. Rather, I'm reading through Donald Knuth's The Art of Computer Programming, and recreating some of the algorithms in Python. Knuth…
Tyler
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STM32F107 read mems mic MP34DT05-A i2s

I am working on STM32F107 to read MP34DT05-A mems mic on I2S. I have tried any configuration setting with pdm2pcm.c and i2s.c but nothing shows the expected result. The expected result is positive int value. This is what i did so far: i2s3 (SPI3)…
Pnzy
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How to get images at 60 fps and imu data at 500hz at the same time with zedmini camera?

We know that IMU sampling rate is much higher than image taken from the sensor (FPS), so can I get images at 60FPS and IMU data at 500hz at the same time? Is there an easy way? Or maybe I need to use two threads to achieve my goal ?
guozixing
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How to calculate rotation matrix for an accelerometer using only basic algebraic operations

There is a C function that gets the acceleration values of x,y,z of an accelerometer sensor (MEMS IMU) as input, and calculates the rotation matrix in a way that the z axis is aligned with the gravity. It is being used for calibrating the…
XExplo
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How to get the angle value using xcubememsmic1 expansion pack?

I am working on a project with 4 mems microphones and I want to get the angle of sound(sound source localization) using xcubememsicmic1 sound expansion pack but I don't know how can I get it? Anyone who has experience in mems technology and sound…
Waqas Ahmad
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Configuration of STM32 pins for 2 microphones acquisition

Please help me. I am trying to configure pins for reading the data coming from 2 microphones mount in a X-NUCLEO-CCA02M2. To read the data I am using a NUCLEO-F401RE. I read all the documentation for tthe expansion but nothing is working. In this…
d3dalo
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Voice angle detection using 4 mems microphones on STM32 using Acoustic SL library

Hope you are doing well. I am an Embedded Engineer working on STM32, I have recently shifted to STM32 and I use Stm32CubeIde for programming and nucleo-64(F411RE) board. I have a project with 4 mems microphones and have to perform angle detection…
Waqas Ahmad
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IMU/MEMS with high limit accelerometer and magnetometer

anyone know of an IMU sensor. Price range of 5-17$. That has a high accelerometer value of 50-200g and a magnetometer to measure the the Earth's orientation. Update on mag and acc need to be 100Hz or higher. I know i kan get one imu for each but i…
Daniel Fjeld
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Tilt sensing with Lis3dh and stm32

I am using the LIS3DH sensor with STM32F4 and I want to calculate the tilt angle. I am aware that I am supposed to calculate the angles(Yaw-Pitch-Roll(ψ-θ-φ)) using some formulas but I don't know how to calculate values obtained after applying…
Tara sarpoolaki
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What should be the reason for not getting output from the MOTION GC library?

I'm working on the "STEVAL-MKI182V2" mounted on the STEVAL-MKI109V3 development board. Initially, I downloaded the Standard c Drivers from the following link https://github.com/STMicroelectronics/STMems_Standard_C_drivers where I found the .ioc…
Omkar Dixit
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Comsol resistive heating coil simulation

I have a resistive coil from a MEMS. The only data I have to simulate the resistive heating is the input voltage which I can use between 0.5V to 20V and the material of the coil(GOLD). I am getting error like [Failed to find a solution. System…
Hiril Patel
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Compress data from MEMS accelerometer and transfer it with NBIoT

I have raw hex data from MEMS accelerometer with sampling rate of 1 sample per millisecond for a measurement duration of 2.5 seconds for each trace.The data contains first 12 bits for timestamp and then continued with 2 for each axis of acceleration…
sairam
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