MEMS and sensors

I cannot connect to the ST sensor tile.box when using the ST BLE sensor APP. What should I do?

Hello, I'm using STEVAL-MKI109V3 and STEVAL-MKI193V1 (ASM330LHH IMU). Using the Unico GUI, I see that the IMU is detected and recognized however I don't manage to stream any data from the IMU. I enable the accelerometer and the gyroscope and set the sample rate, however no data is printed to the log file and to the GUI plot - GUI plot displays curves which are steady and zero and are non responsive.  Any suggestion on how to solve this issue? Thank you very much! 

Hi, I am looking for an accelerometer. I wonder if there is any ST MEMS chip that meets my requirements:I don't need very high max G force: 4/8G should be enoughLow power consumptionAble to send trigger, like a GPIO rising or falling signal, when acc value hits a threshold. Most importantly, for each axis (x, y, and z), the threshold value can be individually set.Have some memory enough to keep acc readings for the past a few seconds, preferably 10.For the last requirement, the app scenario is like MCU is triggered by the accelerometer to wake up from sleep mode, which may take some time. Hence, if the sensor has kept the data for the past a few seconds, the MCU is able to retrieve that history data before the trigger event.

Hello, I am using a LSM6DSL sensor and when applying a 2G acceleration without rotating the board, I get very important spikes on the gyroscopes of about -90°/s to +90°/s amplitude.This is very strange. Is this a normal behaviour from this sensor ? Are there settings or ways to avoid this ?I noticed the exact same behaviour on the LSM6DSV16X sensor.Thank you for your help

Hi,I have an application with LSM9DS1 sensor and I expected that when I change LSM9DS1 sensor position from horizontal to vertical value will change but changed only when sensor was moving but after that valus comes almost same for horizontal or vertical position.  I don't understand how its working. I have smole expirience with sensor ADXL345 and this sensor on horizontal possition give me values arround 0, on vertical position values is arround 256 (- +) and that is clear for me.Thanks for any explenation - helps.Regards Jarek

This is my first time posting.Thank you for viewing. ・I would like to use the VL53L5A1 sensor with the STM32L0 series.・Created according to the manufacturer's document "UM2974".・When I created it with STM32CubeMX Ver6.11.0, the build did not pass. The device used is "NUCLEO-L010RB".・It says that "53l5a1_conf.h" does not exist, but is it not generated? I would like to know the solution.thank you. 

Hi,I am testing VL53L8A with NUCLEO-F401RE and 53L8A1_SimpleRanging software under STM32CubeIDE.Changing RANGING_FREQUENCY from 5U to 15U does not increase the frame rate, always 5Hz.What am I doing wrong? I have changed also the TIMING_BUDGET to 5U (ms).#define TIMING_BUDGET (5U) /* 5 ms < TimingBudget < 100 ms */#define RANGING_FREQUENCY (15U) /* Ranging frequency Hz (shall be consistent with TimingBudget value) */ // era 5#define POLLING_PERIOD (1000U/RANGING_FREQUENCY) /* refresh rate for polling mode (milliseconds) */Thanks,David

In high-accuracy ODR mode, can the frequency of writing to the fifo be automatically aligned,for example 960 to 1000hz  

Hi Team,I searched sensor fusion performance information of LSM9DS1TR, LSM6DSO IMUs as below,1. Static Accuracy (Yaw, Pitch, Roll) = ?2. Dynamic Accuracy (Yaw, Pitch, Roll) = ?3. Orientation Settling time = sec?However, I did not find it in the respective datasheets. I need to know the accuracy of the IMU from ST. Could anyone share the above details?

Hi,Can somebody please suggest me a ToF sensor with signal sampling rate of atleast 1MhZ. Thank you

In MEMS Studio under advanced features > MLC I upload a data pattern and label it under the "Data Pattern" tab. On the "Datalog analysis" tab when I click the Run button it gives the following error.Path: resample_odr.exe does not exist. Please check location of 'resample_odr.exe' This file does not exist on the pc anywhere. This error does not yield any results with an internet search.Operating System : Windows 10MEMS Studio version 1.3.0Any help would be appreciated.  

Hello all, I wanted to use sensortile to collect data on microsd card. (I have two of them) So, One portable cradle from the kit working good, but another is not working with the same microsd card. When start it from the android app the sensor just behave like normal but after several seconds disable sd logging completely. Need to say that I do not see any files on SD card after the procedure. Also, I did check solder joints and didn't notice any problems with soldering.

Hello,the LIS2DUX12 documentation (AN5903: LIS2DUX12: machine learning core) contains a table explaining how meta-classifier works:At the third column from the end of the table, the decision tree gives the result "A".As far as I understand, the "B" counter should have decreased, but it didn't. Why?

Hello,I am using a VL53L8CX sensor in 8x8 mode. There is a thing that is unclear to me from the documentation, so I need a clarification. A value in the zone Z of the matrix I get from the ToF sensor is:a) Distance between the object in the zone Z and the optical center of the sensorb) Vertical distance between the object in the zone Z and the sensor planeWhich one of these is true? Kind regards,Milan

Hi, I'm trying to use the IIS3DWB as FIFO mode with a watermark.I'm using a custom board. I double checked the hardware and guaranteed this board works well. I'm able to read/write the sensor using SPI interface and generate interrupt with wake-up int source.To handle the sensor, I'm using the library created by ST. https://github.com/STMicroelectronics/iis3dwbIn this mode the interrupt INT1 not works well. This is my init code:// Reset the sensor iis3dwb_reset_set(&hAcc, PROPERTY_ENABLE);   do { iis3dwb_reset_get(&hAcc, &reset); HAL_Delay(BOOT_TIME); } while (reset);   iis3dwb_xl_data_rate_set(&hAcc, IIS3DWB_XL_ODR_26k7Hz); iis3dwb_xl_full_scale_set(&hAcc, IIS3DWB_2g); iis3dwb_fifo_mode_set(&hAcc, IIS3DWB_STREAM_MODE); iis3dwb_fifo_watermark_set(&hAcc, 256); iis3dwb_fifo_xl_batch_set(&hAcc, IIS3DWB_XL_BATCHED_AT_26k7Hz); iis3dwb_block_data_update_set(&hAcc, 1);   int1_route.fifo_th = 1; int1_route.fifo_ovr = 1; int1_route.fifo_

I want to setup the wakeup configuration registers and then disconnect the accelerometer from an I2C programmer and power source. When the accelerometer is placed with the new circuit, will the configurations in the register I have set still remain? The datasheet does not mention non-volatile memory on registers.

I'm using an ESP32 to communicate with the VL53L3CX. I successfully reworked the vl53l3cx_platform.c file to get communication working with the sensor using I2C, which is a good start. But when I go to read from the sensor (using polling, not hardware interrupt mode) I can't seem to get any valid measurements. The status of the readings mostly alternates between 4 and 5, with an occasional 14. I see plenty of negative distance measurements. But unfortunately, not status readings of 0 indicating that the reading is valid (not that I'd expect negative distance readings to be valid). Screenshots of logs are at the bottom of the post.I do not perform any calibration for now as I'm just trying to get some initial readings. Could this be the problem? I wasn't sure if the sensor must be calibrated before measurements can be successfully collected.My code works as follows:Initialize I2C codeVL53LX_WaitDeviceBootedVL53LX_DataInitVL53LX_StartMeasurementVL53LX_GetMeasurementDataReadyOnce ready, V

HiFrom a the VL6180 documentation i found that there is a scaling factor.As i read from it, the default is 3 and this means that the response are in mm (1mm resolution)If it is changed to 2, the result will have a resolution of 2/3 mm ect. But in the VL6180X documentation, there is no mention of the range scaling anywhere.Is is just omitted from the documentation for some reason or is the functionality not there?I'm looking for a TOF sensor to range between 5 and 30mm. Sub mm resolution would be great, even if noisy. i need to measure relative displacement within this range.Or if you have a recommendation for another small package size sensor that is better, i'm all ears.Thank you!

I'm using VL53L3CX. The development board is nucleo f103rb. Power was supplied from the laptop, and pin connections were the same as shown in the notes in the example code.(sensor - pololu / code - stm32arduino helloworld)The sensor was powered to 3.3 V in the vinAt first, the data came out well. However, after several repeated measurements, suddenly there was a problem with "initsensor." The code has not progressed since "initsensor."I2C was the problem. I tried to search the address with scanner code but it failed.After removing the sensor and board from all power connections, I tried again after a lot of time, and it went intermittently and then it didn't. When I took SDA and SCL with my oscilloscope, the signal was caught only when it was intermittent and I stayed in HIGH state when it was notI've been suffering from this issue for weeks. I wonder if the sensor is broken or if there's something wrong.

Hi everyone,I have a problem with the VL53L0X Time of Flight (ToF) ranging sensor, where after being exposed to a temperature of 100°C for around 1.5h, the sensor is not functional anymore.In the solder reflow process section of the datasheet, the temperatures for soldering are all well above 100 °C, so the sensor should survive these conditions.timCould the temperature still be the reason for the failure? Thanks in advance and kind regardsPhilip

 I'm trying to get the VL53L5CX-SATEL to talk to a microcontroller.The lines are connected as followsINTFloatingI2C_RST22K pull downSDAMCU SDA Pin with 2.2K pull up to 3.3vSCLMCU SCL Pin with 2.2K pull up to 3.3vLPn22K pull up to IOVDD (3.3V)PWREN22K pull up to AVDD (5V)AVDD5VIOVDD3.3VGNDGNDWhen I try to send a write command, the device does not ACK the address (0x52). Can anyone see what I'm doing wrong?

Hi, I try to use IIS3DHHC as a simple inclinometer. I learnt that to get stable readings it may be a good idea to process raw data using Extended Kalman Filter (EKF). Some ST demonstrations available on YT mention that as well, but I found no source code.I have tested several solutions found on Github but so far I found no good EKF implementation, preferably based on CMSIS-DSP or Eigen3 libs.Could anyone advise?A similar question was asked exactly 10 years ago here but it has not been answered yet.

Is there a publication of the detailed schematics for the VL53L5CX-SATEL? My search of the ST site returned two documents only showing high level connections. I'm more interested in which signal lines, capacitors, resistors, and values are populated on these devices...TIA,-Terry

HI,I am using VL53L1 sat board, can i configure I2C of the sensor to 1MHz? How should i do it? Could u please guide me on this matter?Thank you

Hi,I am looking to print only the signalrate in MCPS of the VL53L1. What should I do?