MEMS (sensors)

Hello,as the title says I'm interested in understanding more about how the INT1/INT2 pins of the LIS3DSH MEMS accelerometer work. Are they push-pull or open-drain? If it's not the default, is it possible to configure the sensor to not drive them (i.e. high impedance state)?I'm reading in Table 61 of the datasheet that by default the INT2_EN and INT1_EN bits of CTRL_REG3 are set to 0, thus the INT1 and INT2 signals are "disabled". Does "disabled" mean the signal is not driven, and thus it can be driven externally without damage, or that it's tied low/high internally?For context, I'm asking because I'm interested in bit-banging a 16-bit bidirectional parallel bus from a STM32F4DISCOVERY board, and according to Table 7 in the manual it looks like PORT E would be ideal for this pu

LSM6DOXTR , I m reading this sensor by configuring 0x10 and 0x11 modules to 0x60 and 0x60 as show in user guide by ST but  the values I get of accelerometer are correct while gyro value jump to 0 to 255 as I am only reading MSB. LSB is changing rapidly

Hello,I am using multiple different sensors which require different pull-up resistors. For I2C BUS, I have to use just one pull-up resistor value for all sensors. How can I calculate or decide the resistor value? MCU is STM32WB55.Sensors are VL53L3CXV0DH and LSM6DSOTR.Thank you,Batuhan

I am using LSM6DSO sensor to get step and two interrupts. When the sensor runs about 15 minutes, it will stop working and have no reaction. Sometimes it will reboot and the step reset to zero. This is my code for initializing the sensor, is there something wrong or I need to add something?{ lsm6dso_device_id_get(&imu_dev_ctx, &whoamI); if(whoamI != LSM6DSO_ID) return false;   lsm6dso_reset_set(&imu_dev_ctx, PROPERTY_ENABLE); do { lsm6dso_reset_get(&imu_dev_ctx, &rst); }while(rst);   lsm6dso_i3c_disable_set(&imu_dev_ctx, LSM6DSO_I3C_DISABLE);   lsm6dso_xl_full_scale_set(&imu_dev_ctx, LSM6DSO_2g); lsm6dso_gy_full_scale_set(&imu_dev_ctx, LSM6DSO_250dps); lsm6dso_block_data_update_set(&imu_dev_ctx, PROPERTY_ENABLE);   lsm6dso_fifo_watermark_set(&imu_dev_ctx, PATTERN_LEN); lsm6dso_fifo_stop_on_wtm_set(&imu_dev_ctx, PROPERTY_ENABLE);   lsm6dso_fifo_mode_set(&imu_dev_ctx, LSM6DSO

The LSP27HHW also embeds a temperature sensor. Comparing the datasheet, I can´t find any diference. Why LPS27HHTW is 1€ more expensive?

how can i store 1 second audio data using audio loop example

I programmed a h3LIS100DL to an interrupt threshold of 4G. Then I breathed on the chip and got an interrupt.I expect it doesn't have a hidden Rh sensor somewhere, so it has to be related to a temperature change. Is there any documentation available on this somewhere? I couldn't find anything in the data sheet.

Hi I am trying to program the LSM6SDO sensor in C. I would like to get the pedometer to count the number of steps taken. However, it always shows zero, and does not respond to any step taken. My main function looks something like this:int main(void) { LSM6DSO_set_mode(); LSM6DSO_Enable_X();   LSM6DSO_Enable_Pedometer(); LSM6DSO_Step_Counter_Reset();   printf("a_x: %d\n", (int32_t) acc[0]); printf("a_y: %d\n", (int32_t) acc[1]); printf("a_z: %d\n\n", (int32_t) acc[2]);   uint16_t StepCount = 0;   while(1) { LSM6DSO_Get_Step_Count((uint16_t *) &StepCount); printf("Steps Taken: %d \n", StepCount); } }I am able to get readings from the acceleration (a_x, a_y, a_z), meaning the sensor is not broken.Using the libraries given in stm32duino/LSM6DSO github, the functions I use to set up and read from the sensors are as shown:void LSM6DSO_set_mode() { uint8_t dataToWrite = 0; //Temp

Hello, I have read in the "application notes" that :The LIS2DW12 provides an embedded high-pass filtering capability to easily delete the DC component of the measured acceleration (pg 12) . can you elaborate please? does that mean we can make so the readings will be without the 1g add-up, and (theoretically) in rest we will get x=0 y=0 z=0 ?Thank you

I am trying to use 2 HTS221 in the same board with I2C. I have SDA pin from both sensors wired to the same pin on my PCB. When I want to use the first HTS221, I set his CS pin to HIGH and the other HTS221 CS remains LOW. However, when I try to read from any of the sensors, the program locks. The only way I get data from the sensors is when both CS pin are set to HIGH, but I am unable to know from which sensor I am getting the values.I think the problem could be that when one of the sensors CS is HIGH is using the i2C interface while the other is using the SPI interface and causing the problems.Thank you.

Just want to know if a STWINKT1B Kit can be configured to connect to a STM32MP157C-DK2 with X-LINUX-PREDMNT

In dsh-predmnt is there a way to disable WeeklyAggregateFunction /Bucket...Can I remove the weekly-aggregate bucket? Can I comment the line in serverless.yml and deploy without any issues? - ${{file(./lambda/dataLakeWeeklyAggregator.yml)}}

Hello, I am trying to implement a simple program on my STM32 NUCLEO F302R8, that reads data from a LSM6DSRX iNemo module (STEVAL MKI195V1) throught a NUCLEO-IKS01A2 extension board, and stores it in flash memory.I am unable to find any kind of documentation, or code example for sensor reading using the lsd6dsrx library ('lsd6dsrx.h' file). For the time being I am using this structure but it lends me to an  "Hard fault interrupt" that I don't know how to resolve. If you could provide me an example of code using this captor it would be great. For the record, I am currently initializing my captor this way :/*USER CODE BEGIN 2*/       LSM6DSRX_Object_t gyro ;   if ( LSM6DSRX_Init(&gyro) == LSM6DSRX_OK){   LSM6DSRX_GYRO_Enable(&gyro);   }  Thank you in advance. 

Hello,I am trying to understand the PDM2PCM conversion using I2S as the receiving protocol. Does anyone have an easy example for generating a single PCM sample from the PDM data bits? I am having some difficulty doing this using the VM3000 PDM MEMS microphone.Any help would really be appreciated.Thanks

Hi Everyone, excuse meI have developed android 9 system using imx6 motherboard.after finished HAL integrated due to calibration needed.how can I enable LIS2DH12 acc calibration functionI can see the STMems_Android_Sensor_HAL_Input-STMems_Android_Sensor_HAL_Input\AccelSensor.h have definebelow#if (ACCEL_CALIBRATION_ENABLE == 1)extern "C"{#include "STAccCalibration_API.h"};#endifbut I can not find any STAccCalibration_API.h fileDoes anyone know it?thx

Hi I’m using an arduino heart rate sensor on the nuclei f411re board and I am getting output values of 2000-3500 when not pressed and values between 0-10 when pressed I can’t find much information about it online and I was wondering what do these numbers exactly mean? On the internet I have seen outputs of arduino between 60-100. this is the sensor I am using. https://www.auselectronicsdirect.com.au/heart-rate-pulse-sensor-module-for-arduino-project?gclid=CjwKCAjwqcKFBhAhEiwAfEr7zZgCF352JfZAUrQ0SwoDAuGfIB-37AJCSLpHLK-ZPvs-pB2u6-bhiRoC9JwQA

Anyone have Example Code of H3LIS100DL Accelerometer With I2C Communication in any of STM Microcontroller ?

I would like to pick up both single and double taps in my application. I have the double tap working but cannot get it to pick up a single tap. In reading the TAP_SRC register , the TAP_IA bit shows a 1 for a double tap but never does for a single tap. however, in the same register, the SINGLE_TAP bit does go high if only tapped once. My understanding is that if I set the WAKE_UP_THS register for the SINGLE_DOUBLE_TAP bit to 1, that they would both be enabled.This is my first use of this sensor and I am sure I am missing something in setting it up. I have been reading the datasheet and application notes and have not been able to see where I've gone wrong.I have the interrupts enabled as well.I appreciate any help or guidance you can give and can provide additional information if needed.

Hi sir,I have a custom board containing LSM303AGR connected to stm32f407vg via I2C.I can generate interrupt at INT1 pin.What is the correct initialization to enable LSM303AGR Accelerometer activity/inactivity function Interrupt 2?Our initial setting: LSM303AGR_CTRL_REG1_A = 0x27;LSM303AGR_CTRL_REG2_A = 0x00;LSM303AGR_CTRL_REG4_A = 0x00;LSM303AGR_CTRL_REG5_A = 0x00;LSM303AGR_CTRL_REG6_A = 0x08;LSM303AGR_INT2_CFG_A = 0x2A;LSM303AGR_INT2_THS_A = 0x0F;LSM303AGR_INT2_DURATION_A = 0x07;LSM303AGR_Act_THS_A = 0x0F;LSM303AGR_Act_DUR_A = 0x07;Thanks,Willy

Hi!I'm using lis2dw12 on a custom board and trying to acquire the acceleration based on the data ready signal that I routed to INT1.The code was based on this repository but I think I'm doing something wrong because I can't get any signal from the pin while mesuring it with an oscilloscope.Here's my configuration of the device. lis2dw12_reg_t int_route;   /* * Restore default configuration */ lis2dw12_reset_get(&dev_ctx, &rst); lis2dw12_reset_set(&dev_ctx, PROPERTY_ENABLE); do { } while (rst);   /* * Enable Block Data Update */   lis2dw12_block_data_update_

4) Which FFT algorithm is best for my application (RFFT/CFFT)5) After FFT will i get three output for x , y , z or only 1.6) Output example of after FFT.

Hi! I am using ISM330DLC to get data from all three gyros and three accelerometers with an ODR of higher than 400Hz. When the circumstance temperature is going down from normal to about -20~-30℃, there are several disturbance in outputs of gyros (different from noise). This phenomenon only appears for gyros in the process of temperature descending. Do you have any suggestions?

Hi,I am using LSM6DSOx for a wearable device project. Currently all the accelerometer data is written in FIFO and device wait for data ready interrupt. This helps system to maintain low power mode and operate only when FIFO data is ready.Currently FIFO is using only 3K of memory. But I want to use the additional 9K flash memory so that I can increase system sleep period.Below is the accelerometer configurations that I am using. Please guide me what changes needs to be done to use 9K flash memory------------------------------------------------------ /* Restore default configuration */ lsm6dsox_reset_set(&dev_ctx, PROPERTY_ENABLE); ACCL_DEBUG("Sent reset command\r\n"); do { lsm6dsox_reset_get(&dev_ctx, &rst); } while (rst); /* Disable I3C interface */ lsm6dsox_i3c_disable_set(&dev_ctx, LSM6DSOX_I3C_DISABLE); /* Enable Block Data Update */

Can the output of 3-axis iis3dwb vibration sensor be 0g when staying on the table?  Please advise. Thanks!

In DSH-PREDMNT serverless.yml file there is an option as below... # uncomment to deploy admin panel # - Outputs: #   AdminIdentityPoolId: #    Value: #     Fn::ImportValue: AdminIdentityPoolId #   AdminPoolId: #    Value: #     Fn::ImportValue: AdminPoolId #   AdminAppClientId: #    Value: #     Fn::ImportValue: AdminAppClientIdCan someone explain what this option actually does?. Does this create a separate Admin Page for the DSH-PREDMNT AWS App?.