MEMS and sensors

I just bought the latest SensorTileBox (STEVAL-MKSBOX1V1) and it lost power and bluetooth connection, no LED lights. How do I restore it to its original firmware? The ST BLE Sensor app also doesn't have the create app option.

Hi all, I am working on the STEVAL-PROTEUS1 Board, which features the STM32WB5MMG module and the IIS3DWB high bandwidth accelerometer sensor interfaced via SPI_1. According to the IIS3DWB sensor datasheet, it supports up to 10MHz (CLK) and an ODR of 26667Hz (37 microseconds). My objective is to collect sensor data at an ODR of 26667Hz. Here are the steps I've taken so far: Configured SPI_1 to 8MHz. Configured the sensor to generate an ODR interrupt, which is successfully triggering every 37 microseconds. The issue arises when collecting data (6 bytes) from the sensor, which is taking 42 microseconds. Ideally, this should not exceed 10 microseconds using HAL functions. Could anyone help me understand if the HAL function is supposed to take 42 microseconds, or if I might be doing something wrong? Note: The M4 core is running at 64MHz and the M0 core at 32MHz. Thanks in advance!

Hello,section "4.5.1 Example of output data" of the LIS2DUX12 device application note (AN5909) provides an example of calculating the acceleration value from the FIFO.In the example 14 useful bytes from the FIFO are multiplied by the sensitivity in "mg/LSB":I think "LSB" in the sensitivity refers to the sixteenth bit of the FIFO word.Why aren't the raw values from the FIFO shifted right by two bytes (or divided by 4) before multiplication?

I have an STM32 Nucleo F401RE plus X-Nucleo-53L3A2 board.IDE and the rest of the toolchain installed, including the STSW-IMG016 P-NUCLEO-53L3A2 pack graphical user interface.The data brief of the GUI states "I2C transaction recording" which is of my major interest.How do I start this transaction recording? In the GUI software I did not find any option. The datalogging feature only logs sensor output, not I2C transactions. The reason is that I need to extract the I2C command sequence and parameters in order to initialize a VL53L3 sensor using a very tiny low cost microcontroller. Loading the full API is not possible for that processor.Any help getting the I2C transactions recorded and downloaded would be greatly appreciated.

may i know lps22df temperature offset register?want to read the correct value at 25 degrees in the temperature chamber,but it seems to be read as an incorrect value. Please me, know if there are any other ways to compensate for the temperature

I'm using the VL53L1X ULD API to drive 4 sensors and, sometimes, the function VL53L1X_SensorInit returns error VL53L1_ERROR_CONTROL_INTERFACE while initializing the third or four sensor (the first two are always initialized correctly).The sensor boot up correctly and returns correct measurements, tho.What's the best practice to manage this error? Is it correct to use something likestatusRadar = VL53L1X_SensorInit(dev_address); while(statusRadar) { statusRadar = VL53L1X_SensorInit(dev_address); }My init function is likestatic void VL53L1_init(void) { uint16_t ToFAddresses[4] = {0x54, 0x56, 0x58, 0x5A}; uint16_t dev_address = 0x52; uint8_t byteData, sensorState=0; // Reset the 4 ToF sensors on the expansion board for (ToFSensor = 0; ToFSensor < NUMERO_RADAR; ToFSensor++) { statusRadar = XNUCLEO53L1A1_ResetId(ToFSensor, 0); } // Bring the sensors out of the reset stage one by one and set the new I2C address for (ToFSensor = 0; ToFSensor < NUMERO_RADAR

Hi,I am using MP34DT06JTR mic with my custom board with Micro-controller STM32U535CET6.I am unable to get the data form mic with my custom board. MIC schematic screen shot and Signal wave form of CLK and DATA screenshot given below.can you please verify this all.Yellow signal for CLK and Blue one is for Data.sample rate for audio data is 16Khz in software.  I have tried the same MIC with EVK Nucleo-U545RE with X-NUCLEO-CCA02M2, there sound from MIC is perfectly working fine with the same code..Please help me in this issue ASAPThanks  

In ASM330LHB datasheet, gyro and accelerometer self test to be executed only when device is in static condition. But in field operating environment, device may goes into high dynamic condition during self test active, thenis ASM330 device gets damaged ?  OR device will be ok but only self test results will be failed?Thanks is advance,Pavani.

We currently use the VL53L1x and have struggled with precise measurements to close objects. Our application needs precise measurements between 1mm and 400mm.  Reviewing the available sensors ST has it appears to us that the VL53L4CD is the best possible sensor given our needs.Would you agree? Thanks,Will  

Hello.I am designing a product using the VL53L7CH model.I am using a 3.3V MCU.So I'm trying to use 3.3V for both IOVDD and AVDD's voltage level.Is there no problem if I use the same line without distinguishing IOVDD and AVDD? Regards,KORM

I have added all the drivers for the VL53L0X API, but I still encounter this error. Why is that?

Hi,I am using the VL53l8 sensor. i need to change the ranging frequency. im using the Xcube tof code. I see in the app tof code that #define RANGING_FREQUENCY (10U). so if i change 10u to 15. Willi get ranging frequency to 15 hz.? Thank u 

Dear Sirs,I would ask how it is connected ISM330BX with STEVAL-MKI245KA in the webinar. In fact STEVAL-MKI245KA has inside different sensors and I don't see the connector to plug STEVAL-MKI245KA.Moreover in en.FP-AI-MONITOR2_V1.0.0_RC8 need to be installed in CubeMX?The en.FP-AI-MONITOR2_V1.0.0_RC8 use one of INT1 and INT2 or both of ISM330BX? Thanks

Dear,I'm testing the lsm6ds3tr-c free fall function, but it's hard to tuning the threshold, i attach the current registor settings, I want to dectect the 1m free fall, can you give some guide? thanks a lot.

 Hello,I am using the VL53L8CX ToF sensor (I2C) and have encountered an issue. Currently, I’m not using a coverglass, and I have set the sensor to an 8x8 resolution with a frequency of 15 Hz.The problem is that when I run the sensor in an infinite loop, it stops collecting data after a while, usually within 10 minutes, without displaying any error messages.Could you please help me identify the cause of this issue and suggest possible solutions?Thank you in advance!

Hi, I’m working with the IKS4A1 Nucleo expansion board and F401RE. I need to generate a PWM signal on INT pin 2. The documentation I found focuses on connecting the IKS4A1 with MEMS Studio, and I couldn’t find guidance on configuring PWM signals in MEMS Studio.Is it possible to configure the PWM signal in MEMS Studio, or do I have to use CubeIDE instead? Any guidance or resources would be greatly appreciated!

I am trying to do USB sensor data streaming Real Time Plot by conecting  my steval mkboxpro with hsdatalog_GUI.py but it keeps saying "Device Template Model Loading". Anyone can help?Thanks 

Hello,I am programming my ISPU code that work on interrupts INT1 and INT2 in STM32CubeIDE and testing it in STEVAL-MIK109V3 with adapter board MKI229A (LSM6DSO16IS) and showing my output value in MEMS Studio.I configured the conf.txt linking the interrupts NT1 to function "algo_00" and INT2 to function "algo_01".conf.txt:     acc_odr 104     acc_fs 2     acc_mode high_performance     gyr_odr 104     gyr_fs 500     gyr_mode high_performance     ispu_irq_rate 104     ispu_int1 enable     ispu_int2 enable     ispu_latch disable     algo 0 enable     algo 1 enable     algo_int1 0 enable     algo_int2 1 enable After building and uploading the ispu.ufc in the sensor with MEMS Studio happens that when INT2 is 0, it freezes all my custom ISPU Output data. And when INT2 is 1, it

I have been trying to get a connection to my sensortile kit using the serial  connection. I only get "Board not identified". I have tried loading the DatalogExtended.bin file to try get the board to be recognized but this didn't help. I also tried making a small "application" with the Algobuilder in Mems Studio but this seems pointless as there is no connection. Is there a tutorial or app note that could explain how to get the software to detect the kit? 

I'm designing a custom LiDAR sensor for a project and I need a sensor to accurately measure the distance to a small point. I'm looking for an accuracy of +-5mm but the small the better, the maximum range it needs to measure is about 400mm and the minimum range is about 50mm. I would also like a ranging frequency of about 100Hz but that's not set in stone. I've been looking at the VL53 ToF sensors but they all have larger FoV's than I'd like so I have 2 questions:Which ToF sensor would be best for these specifications?Is there a way to reduce the FoV? (e.g. with a small aperture or a lens perhaps)Any help would be appreciated and I'm happy to answer any questions.

Hello, I am using the LSM6DSOX sensor and reading data from the FIFO, following these examples on GitHub (https://github.com/STMicroelectronics/STMems_Standard_C_drivers/blob/master/lsm6dsox_STdC/examples/lsm6dsox_fifo.c). I've set the same frequency for both the accelerometer and gyroscope, but when I read the data from the FIFO in continuous mode, the samples are not aligned. For example, I receive the first two accelerometer samples followed by one gyroscope sample, then three accelerometer samples, two gyroscope samples, and so on.Since the frequencies are the same, shouldn't I receive one gyroscope sample and one accelerometer sample consecutively in a 1:1 ratio? Is this behavior normal? Or is it necessary to adjust the accelerometer's configuration in some way to ensure that the samples are aligned? If so, how should I do that?Thank you!

Hello I am working with an ST magnetometer sensor to detect movement along the X-axis. I have a custom board featuring an L4 microcontroller, which enters STOP MODE 2 until an interrupt is triggered. I use the following function to initialize the sensor for this mode, after which the device goes to sleep. When the magnetic data exceeds a specified threshold, the magnetometer generates an interrupt and the device wakes up. However, I am facing a challenge regarding maintaining the device's proper functionality when exposed to temperature variations. The interrupt generation is based on raw magnetic data returned by the function lis2mdl_magnetic_raw_get(). I am aware that the temperature fluctuations, such as reaching 50 C, can distort the magnetic readings, potentially causing inaccuracies. The magnetometer will require calibration, but my question is how to apply the calibrated values in the system?   Currently, my approach is to keep the device in sleep mode and wake it up o

Hello everyone,    Recently I tried to use VL53L3CX to accomplish a distance calculating project. When referencing the document of VL53L3CX I found a little strange about the distance parameter.        For example, the note of ranging capabilities table in the datasheet DS13204, shows that "The ranging distances reported are the ones reported by the driver by the parameter called RangeMilliMeter". While in the application note AN5561, it shows that "The ranging distances in the table below are those reported by the driver by the parameter called RangeMeanMilliMeter."        What I confused is: inside the API(VL53L3CX_BareDriver_1.2.10), I could not find the driver parameter named "RangeMeanMilliMeter".While "RangeMilliMeter" could be found in the structure VL53L3_RangingMeasurementData_t. So if there has any difference between these two parameters? If yes, how to use the parameter RangeMilliMeter and what's its definition

I want to collect data wirelessly using the SensorTilebox.PRO and an STEVAL-MKI240KA (LSM6DSV32X) connected via the DIL24 socket. When I flash the DATALOG2_Release binary, I can see the onboard sensors using the ST BLE Sensor app, but not the external IMU. When I flash the MEMS Studio datalog extended firmware, I can log data from the external IMU but the device must be connected to a computer using a USB cable. Are there any pre-existing solutions allowing for datalogging (either through BLE connection or automatically on startup) with data from the external IMU, or does this functionality require directly modifying and flashing custom firmware?

Hi, I have been working with iis3dwb since 2020 and a week ago me and my colleague found something that looks like a design mistake from ST side, we found something like sample losses during FIFO buffering I am not sure but further I will try to provide as much info as possible to be understood. There will be a lot of details because the question isn’t easy.Prehistory:Me and my team designed a vibration sensor(further VTS) based on iis3dwb mems accelerometer (spoiler: it’s great, but…) and we are happy about it. Until recently we thought everything is ok and data reading is working as it should be, I did a lot of tests to see if we have some sample losses, I tested it on 8192 samples num for each axis due to internal uC memory limitations (and this amount was enough to calculate FFT and then acc RMS, velocity RMS… with required frequency dimension and accuracy). But this was the first step in production of VTS, then we installed 8MB RAM to store 1minute, 2 minute etc amount of RAW data