MEMS (sensors)

Hey ,i have been trying to link ISM330DHCX sensor to external sensors.Problem :working with STEVAL-STWINKT1B board and the schematics for my sensor ISM330DHCX clearly cannot be configured to be connected to external sensors , even though it is allowed to link up to four sensors as slaves .in my case ( with the KT1B board) ISM330DHCX (the I²C master) sensor communicate with the processor via SPI ( 4-wire) and should be commmunicating with its slaves (in here im working with one and only slave ; IIS2MDC : magnetometer) Via I2C ( sensor hub mode 2 is enabled ) ,in my case : i get no data even though i made sure to configure I2C and Configure Sensor Hub to read IIS2MDC , followed every step of AN5398 (7 Mode 2 - sensor hub mode.), Prepared sensor hub to read data from external Slave0 conti

Hello,I'm using the IMP34DT05 microphone and it records fine but there is always a noise overlapped and it is very annoying.I have tried recording the background noise in anechoic chamber (see attached audio, high-pass filter alpha is 0.98). Do you know I to get rid of this noise? Is it related to microphone self-noise? Is there some processing library available from ST to remove such noise?Could it be related to some issue with the pdm2pcm conversion? I’m using 24bits on 32 frame. The PDM2PCM filter gain is set to 30.Best,

We are using ST IMU LSM6DSL in to our chipset/PCB.We are looking for ready to use software or algorithm to implement in to our firmware to determine the speed/acceleration & distance from IMU data.Is there any example code available for share?

Hello all,   I'm looking at the datasheet for the STW56N60DM2, and it's really not clear if the back of the FET is electrically isolated from the Gate, Source, and Drain. Typically, this is more clear in other datasheets I've looked at. Below is the only "hint" I can find that the part is isolated. The image below is from a different manufacturer, and they make it much easier to determine.

We got Sensor tile box and they were working fine until we uploaded this:https://www.st.com/en/embedded-software/stsw-mksbox1-bl.html/1000vai bluetooth. Now they are not visible on the app ST ble sensor. How to update the original firmware on the sensor tile box (nnot pro) to make them work?

I struggle to use PDM Filter library.This is the message error I get : What I have done so far are : - in project properties, C/C++ general, Paths and syombols, in "Includes" I added the path to pdm2pcm_glo.h ; in "Library Paths" I added the path to a folder with all the libPDM_FIlter_CM3_GCC_wc16.A ... files.- Wrote #include "pdm2pcm_glo.h" in the main.It's still not working :\In "Paths and Symbols", in libraries, I think I can add a library but I don't know which one to use (all the files were included in mems1 folder). I tried randomly picking but I had another error message;

Hello,We have been using the LSM9DS1 in our own design with Linux kernel 4.19.x by adding drivers from ST github, and using the iio_generic_buffer tool to read values.Now we are upgrading to linux kernel 6.1.46 and I have checked that the drivers are included in the "drivers/iio/imu/st_lsm6dsx/" directory. I am trying to use the same tool to retrieve values and I get this error:iio_generic_buffer -n lsm9ds1-imu_accel -A -g -c 5iio device number being used is 2trigger-less mode selectedEnabling all channelsEnabling: in_accel_y_enEnabling: in_accel_x_enEnabling: in_timestamp_enEnabling: in_accel_z_enFailed to enable buffer '/sys/bus/iio/devices/iio:device2/buffer0': Unknown error 524Disabling: in_accel_y_enDisabling: in_accel_x_enDisabling: in_timestamp_enDisabling: in_accel_z_enThis error means ENOTSUPP (Operation is not supported) and I have checked in "drivers/iio/imu/st_lsm6dsx/st_l

hiwere would i find a recent webinar on how to use X-CUBE-MEMS1? I am interested in Lsm6DSL.Thx

In the project I use Attiny13a) + LIS2DH SPI interface. One leg of the microcontroller is missing. Is it possible in SPI mode to connect the CS pin directly to GND, and not to the microcontroller port.In I2C mode there are enough pins, everything works fine, but the current consumption is too high. 

HiI am updating a PCB comprised of LSM6DSL, LSM303AGR and STM32F4 for a customer. I wonder if these 2 sensors are still the latest and greatest? Or should I better switch to some thing newer?Thx 

Hello there,What is the resonance frequency of the LSM6DSO32 accelerometer and gyroscope?It is not available in the datasheet. I tried to open a customer support tickets but they just forwarded me to this forum. 

Hello, im having some issues with lis3dh data. So im trying to configure and read data from sensor, but its invalid. When i read my buffer L values that are 0 2 4 they seem right: But when i try to connect the data or even read 1 3 5 value that are H, its starting sending some values that are 100% incorrect. Im not moving sensor in any direction. 

Hello, I am experiencing significant challenges with programming the SensorTile Box Pro. I successfully loaded the base firmware STSW-MKBOXPRO Expert Mode v1.1.1 and managed to retrieve data from the accelerometer, gyroscope, magnetometer, and temperature sensor via USB. However, I am facing two issues: 1. When I attempt to add microphone data to the other sensors' data flow, I encounter a problem. After uploading the new flow, which includes Fourier-transformed microphone data, the SensorTile no longer appears among the devices connected via USB. Could you please assist me with this? 2. My second issue concerns data saving to an SD card, which does not seem to be working. Despite leaving the SensorTile Box running overnight to log data, the newly created output.csv file on the SD card is timestamped "31/12/2016 at 13:00" and is only 1KB in size. When opened in Excel, the file is empty except for the columns labeled by data ty

Hi,  I want to know the shock survivability of the pressure sensor LPS27HHTW but I didn't find it in datasheet or application notes.Do you know an application note or data about its shock resistance Thanks for your help   

I couldn't find information about the topmaking for the nano sensor LPS22HB on the datasheet, I need to implement a visual inspection for this IC.Does anyone knows where I can find this info? 

Hello everyone,We manufactured about 100 boards for a pre-production run using the LIS2DTW12, and at room temperature, the boards are all over the map with +/-3°C accuracy, nowhere near the "typical" +/-0.8°C as stated in the datasheet.I've already seen the other post regarding temperature accuracy issues for the LIS2DTW12, but I did not see a resolution or an accepted solution in that post, so to me at least the problem was not solved.Our production volume is 10k+ a year, and we've selected this part because of the temperature accuracy features. I know the data sheet does not show min/max for temperature accuracy, but on a sample of 100 boards, the sensor is nowhere near the "typical" values.Also, I noticed a large temperature variation with the supply voltage: on the EV board, if you change the VDD from 1.8V to 3.6V (using the Advanced Features) the temperature readings (in Data panel) are jumping up by 2°C!There is nowhere in the data sheet any

Hi,I want to connect the microphone feature to my raspberry pi so that I can extract the data and put it in databases. Only when I connect my SensorTile.box (STEVAL-MKSBOX1V1) with my Raspberry pi 3 Model B+ I can see the standard features but not the microphone feature. I flashed the FP-SNS-ALLMEMS1 firmware to my sensor and followed the Getting started with the BlueST protocol and SDK documentation to write my code. Here's the output I get:guest@raspberrypi:~ $ sudo python3 mic_test.pyCreating Bluetooth ManagerdoneScanning Bluetooth devices...Discovery started.New device discovered: AM1V410.Discovery stopped.[<blue_st_sdk.node.Node object at 0x7639d370>]Connecting to device: AM1V410 (ea:eb:d5:a3:cf:fd)Device AM1V410 connected.Available features:GestureActivity RecognitionTemperatureTemperatureHumidityPressureMagnetometerGy

Hello,I would like to know the thermal resistance of the accelerometer part no:AIS328DQTR.Let me know your input!Regards and ThanksMadhu

I think signal delay library does not work on MEMS Studio.I made an example code to show temperature values from a nucleo-L476RG and x-nucleo-IKS01A3 setup.The code should show the actual value and a delayed one:But it gives the following error:This exact situation was replicated on AlgoBuilder software and worked w

Hi,I encountered a problem with a couple of LSM6DSOX employed over 2 years in a mobile Hydraulcs application where the came back to factory for inspection and we saw a significant drift of the offset of the accelerometer (>200mg).Looking at the ASM330LHHXG1 we saw that it is reported in the datasheet the additional information regarding the long term stability (instead of the typical values).I do not understand if the reported values indicate that a component MAY drift during its lifetime up to the reported values or if the values reported refer mainly to the raw data before a calibration step that we do during production. Also, given the absence of the max/min long-term reference in the LSM6 datasheet, would it be correct to assume they perform worse than the ASM330 during lifetime? Or instead are the ASM330 only guaranteed to not go outside max/min specification but on average they perform the same? This discussion

I have several boards with lis2dh12 and all of them keeps return constant data for lis2dw12_acceleration_raw_get function, every board has its own constant, 0x5050, 0xe0e0, 0x7070.I tried using the STEVAL-MKI135V1 connected to STM3220G-EVAL to test maybe our implementation and board design is the problem, but the same happens, it returns constant 0x6060.We also have some boards that we use lis2dw12 instead, everything else is exactly the same, and it works great with the drivers for this sensor.Here is the code for init and for reading data:void Accelerometer_Init(void) { lis2dw12_device_id_get(&dev_ctx, &whoamI);   if (whoamI == LIS2DW12_ID) { /* Restore default configuration */ // lis2dw12_reset_set(&dev_ctx, PROPERTY_ENABLE);   // do { // lis2dw12_reset_get(&dev_ctx, &rst); // } while (rst);   /* Enable Block Data Update */ lis2dw12_block_data_update_set(&dev_ctx, PROPERTY_ENABLE

Hi,I am using LIS2DW12 to detect walking situation of old man.Old man is walking slowly and little moving, In order to detect this small moving, what and how do I set CTRL register you recommend?I have to check continuous moving state....If LIS2DW12 is not suitable this acton, what do you recommend new chip? BRPaul 

Hi, I have been trying to get acceleration data from an Adafruit LSM6DSO32 with the STM32 Nucleo board F446RE via i2c. I used the STMems_Standard_C_drivers  (GitHub - STMicroelectronics/lsm6dso32-pid at 308cf0e4de0db190c453f3e211b0c40990f1f39b) in order to set the IMU properly. I also use the STM32CubeIDE app to programme the MCU. Despite many efforts, the Nucleo board is not able to recognise the IMU (I checked that a test buffer that prints whether the device is recognised using the whoami register (please refer to the 7z folder attached)), though I double checked the slave address of the components and the connections (please see attached image (IMG_0605.jpg). Could you please help me solve that problem? You can find enclosed a copy of the STM32CubeIDE project. Best r

hello,  i'm working on asm330lhh imu sensor and s32k324 nxp microcontroller.Microcontroller : s32k324imu sensor : ASM330LHHinterface : SPI     Question  1. i want to monitor vibration with this imu sensor. how can i implement code give me vibration monitor example code for asm330lhh. example code i checked but it is for ism330is sensor so i want for asm330lhh.2. can i manullay implement code. if yes then what will be need i mean which parameters needs and  what formulas to be need ? 

Hello,I just wanted to inform you that there is a bug in the ST driver for the LSM6DSV16X v3.0.0, available on Github.Function lsm6dsv16x_fifo_batch_counter_threshold_set is wrongly setting the 2 register values, and for COUNTER_BDR_REG1 it is not ensuring that other bit fields are not changed.I stumbled upon this after some time trying to get the BDR counter threshold interrupt to work in a prototype, and thought to share it here.I changed that function implementation to the code below (basically a copy from the LSM6DSOX driver), and it works fine now:int32_t lsm6dsv16x_fifo_batch_counter_threshold_set(const stmdev_ctx_t *ctx, uint16_t val) { lsm6dsv16x_counter_bdr_reg1_t counter_bdr_reg1; lsm6dsv16x_counter_bdr_reg2_t counter_bdr_reg2; int32_t ret; ret = lsm6dsv16x_read_reg(ctx, LSM6DSV16X_COUNTER_BDR_REG1, (uint8_t *)&counter_bdr_reg1, 1); if (ret == 0) { counter_bdr_reg2.c