MEMS and sensors

Hi All,I have a prototype pcb with lis2hh12 + stm32 and i want to configure movement detection into the accell but all informations that i found was about ACT_THS (1Eh) and ACT_DUR (1Fh).In my tests accel does not set INT1 (as desired)... Do anyone know how to make INT1 works accordingly with these THS + DUR ?Here are my accel_init(){lis2hh12_pin_int1_route_t pinValue; /* Wait sensor boot time */HAL_Delay(20);/* Check device ID */lis2hh12_dev_id_get(&dev_ctx, &accelData.whoami); // if (accelData.whoami != LIS2HH12_ID)// {// while (1); /* manage here device not found */// } /* Restore default configuration */lis2hh12_dev_reset_set(&dev_ctx, PROPERTY_ENABLE); do {lis2hh12_dev_reset_get(&dev_ctx, &accelData.rst);} while (accelData.rst); /* Enable Block Data Update */lis2hh12_block_data_update_set(&dev_ctx, PROPERTY_ENABLE);/* Set full scale */lis2hh12_xl_full_scale_set(&dev_ctx, LIS2HH12_2g);/* Configure filtering chain *//* Accele

I need to have a part that goes beyond +/-2000 dps.  The new part LSM6DSV32X does just that (4000 dps).  I'm hoping that it is software/register compatible with the LSM6DSO line of IMUs.  That way I could just replace this part (pin compatible) and update the register for the range of the gyro and leave the remaining code the same.    Is that true?  Can I do this?

I want to test X-Nucleo IKS02A1 board with MEMS Studio. I tried to connect to 4 different boards:-Nucleo F767ZI,-Nucleo F446RE,-Nucleo L053R8 ,-Nucleo WB15CC,I always get the same error:Some device is already connectedWhat can I  do. Is this some linux problem. Do I have to load some special firmware before connecting a board to MEMS studio.   

HelloIf a device using LIS2DW12 is fixed in a fixed position, will it be affected by the gravitational pull of the sun or moon and will the gravitational acceleration of each axis change?

I have a Nucleo-F401RE and want to interface with the STEVAL-MKI209V1. I've tried the TiltSensing2_IIS2ICLX and AccelCalibration2_IIS2ICLX examples but none of them talk to the UNICO-GUI, Mems Studio or TeraTerm UART. Any leads? Especially on what firmware is necessary and wiring?

Spikes are present in the data coming from the LIS2DH12 accelerometer when placed in a casing, but when it is in the open there are no spikes. Attached is an image of the 3 axis data plotted from the accelerometer when placed on the table with casing and rotated. I have also added another plot of the same device on air (no movements). Please advice how to mitigate this issue. Thanks.   

Dear All,I hope this message finds you well.I am reaching out to inquire about the key differences between the LSM6DS0 and LSM6DS3TR-C sensors. Could anyone kindly provide insights into whether the LSM6DS3TR-C offers superior accuracy compared to the LSM6DS0?Your expertise and input on this matter would be greatly appreciated.Thank you for your attention and assistance.Warm regards,Fabrice

Are there any options to reduce the power consumption based upon the configuration I have set so far ?This while still being able to sample at 10Hz 10 bit and using FIFO so that the MCU could stay 'disabled' most of the time.For my project I need the accelerometer to sample @10 bit, 10Hz and 2G  with the lowest power consumption possible. I have used the FIFO to allow the mcu to sleep (for almost 3 seconds) when nothing else needs to be processed. When the watermark of 30 samples is reached I request it to (burst) read\request the values from the FIFO over the SPI interface (8MHz). The request I did get is to have a similar power consumption.The drawn current of the entire setup is about 9.5 uA on average when using the lis2dh12.But when using another accelerometer (bma253) I get about 7 μA total. During the measuring I have seen that the minimal drawn power consumption is increased by 2.5μA. Therefore I determined with the information available that the acceleromet

Hi everyone,I'm working on setting up an SPI connection between the LSM6DS0x and an MCU. I'd like to clarify the pin configuration for a full-fledged SPI setup to ensure I'm getting the most accurate data.Specifically, I have the following questions:SDx and SCx Pin Usage: In SPI mode, how should I configure the SDx (shutdown) and SCx (serial clock) pins on the LSM6DS0x?Full SPI Pin Configuration: Could someone provide a breakdown of all the necessary SPI pins for connection to an MCU (including SCLK, MOSI, MISO, CS)?Any additional tips or recommendations for achieving the most accurate data transfer over SPI would be greatly appreciated.Thanks in advance for your help!

Hello Everyone, I'm working on a project where I need to use the VL6180X sensor with the PIC18F. However, I could not adapt the set register and get register functions in Arduino to the PIC using CCS C. All I want from the experts here is to adapt the two functions I shared below to work in the CCS C program in accordance with PIC. uint8_t VL6180x::VL6180x_getRegister(uint16_t registerAddr) { uint8_t data; Wire.beginTransmission(_i2caddress); // Address set on class instantiation Wire.write((registerAddr >> 8) & 0xFF); // MSB of register address Wire.write(registerAddr & 0xFF); // LSB of register address Wire.endTransmission(false); // Send address and register address bytes Wire.requestFrom(_i2caddress, 1); data = Wire.read(); // Read Data from selected register return data; } void VL6180x::VL6180x_setRegister(uint16_t registerAddr, uint8_t data) { Wire.beginTransmission(_i2caddress); // Address set on class instantiation Wire.write((registerAddr >> 8)

Is there any application note or other information available about the LPS22HB's low current mode, as enabled by LC_EN in RES_CONF register? Other than reducing power consumption, what does it do and specifically, how does it affect performance?

I want to use 2x LIS2DW12 accelerometers on one PCB.I used i2c to save GPIOs.The i2c address is selected by pulling the SDO/SAO pin HIGH or LOW and it is internally pulled HIGH with approximately 20kohm at 3.6v.If I just connect it to GND then I can expect 180uA leakage.If I use a resistor to pull it down then I calculate that to get a LOW value of 0.2 x 3.6v (0.72V) I need to use a pull down of at least 5Kohms. But this implies a leakage current of 146uA. Which is still not great.Is there another way to connect 2 x LIS2DW12, except using SPI? Can I connect the SDO/SAO to a GPIO and toggle it LOW when I want to read either accelerometer, and leave it floating the rest of the time? (pulled high) 

hello,i'm working on ASM330LHH imu sensor, right now i'm write code for gyroscope. when receving gyroscope data that time output is fluctuating without moving sensor, so how can stop this fluctuation please tell me procedure and most accqurate intilization of gyroscope.  

Hello,I have code working well on the LIS2DH12 that I'm having trouble porting to a LIS2DW12. Unfortunately my new supplier only has boards with the LIS2DW12 and not the H12 so I have to port over my detection code to it. I have a sensor connected to a mechanism that closes shut very quickly and basically just want to get an interrupt when the Z-axis has forceful feedback like this.Using the LIS2DH12, I had the scale set at 16G, a threshold that worked well (0x5a on the INT1 register) and INT1_CFG it to a Z-axis high event, with 50Hz ODR. This worked perfectly.Unfortunately, the LIS2DW12 doesn't seem to have settings similar to detect a Z-axis high event, so I'm trying to use the click interrupt instead, but it's not working. It fails to detect the shut mechanism unless is set it to a 2g scale and then it's too sensitive because I shouldn't get interrupts for slight movements but I do. My settings for the LIS2DW12 are:ctrl1 - 0b01000000 - 50hz low powerctrl4 - 0b01000000

Hello,my question applies to both the LSM6DSO and LSM6DSOX FIFO. if I am enabling the gyro and accel both at the same ODR and also enabling timestamp, I want to know what gets written into the FIFO first. I know I can use the tag register to tell me what that "word" is, but I want to ensure that the sequence the data is written/read from the FIFO will always be the same for a given ODR.I am not locally processing the sensor data but transferring it for processing and I want to minimize the length of my packet if I can guarantee the sequence will always be the same. any help if greatly appreciated. Regards, 

Hi,I'm using ST BLE Sensor combined with ST BLE Box for mine BLE application testing. I'm really pleased with it and I even adopted mine Services/Charactersitics to match the BlueST protocol. I wanted to go further and add custom parameters using ADD CUSTOM DTDL ENTRY. Firstly, I can't find the document resources describing the properites in *.json format. The example one I found, doesn't work either. I used Azure IoT to generate model but adding it failed as well. Please for helpMarcin 

I woulke to know the dead time of VL53L8CH to know the max value of one bin, but there is no information in the datasheet. Besides, currently I am using  the example in VL53LMZ_MassMarket_ULD of cubeide to get the histogram, I want to know if the number of the bin represent the number of the photons or does it need to multiply with some special scale value?

I am using your SDK to use STEVAL-BLUEMIC-1 in an android app and I want to know if it is possible to connect to multiple BlueMic at the same time. In this case, I want the audio streams to be added...

Hi everyone,been trying to nail the issue down for a while and I hope someone can helpI've got an LIS2DW12 connected using I2C to an STM32L476VGT6, and I'm trying to set it up to detect WAKEUPevents. I've been following ST's official AN5038 to get it in the right mode of operation.My steps are as follows, in pseudocode:On boot:on CTRL2 set .SOFT_RESET and write (0x40)wait 1 mson CTRL2 set .BOOT and write (0x80)wait 25 msread ALL_INT_SRC to clear any hanging interruptsTo set up:on CTRL2 set .BDU and .IF_ADD_INC and write (0x0C)on CTRL1 set .ODR to 25 Hz, .MODE to LOW_POWER, .LP_MODE to LP1 and write (0x30)on CTRL3 set .PP_OD to OPEN_DRAIND, .LIR to UNLATCHED, .H_ACTIVE to ACTIVE_LOW and write (0x38)on CTRL6 set .BW_FILT to ODR/2, .FS to 2g, .FDS to HIGH_PASS_PATH and .LOW_NOISE to TRUE and write (0x0C)on CTRL4 set .INT1_WU and write (0x20)on WAKE_UP_DUR set .WAKE_DUR to 2 and .SLEEP_DUR to 2 and write (0x42)on WAKE_UP_THS set .WK_THSx to 3 (90 mg @ 2 g range) and write (0x03)on CTRL7 se

HI,I'm a beginner. I should set up some STEVAL-MIC007V1 MEMS microphones. I have Nucleo-F401RE and X-Nucleo-AMICAM1. I have already downloaded the X-CUBE-MEMSMIC1 software package.Is it sufficient to install the UltrasoundFFT.exe executable or is it necessary to download additional software to use MEMS microphones?Thank you

Hey everyone,I am new to the lsm6dsv16x sensor and I would like to set it up to read the full fifo as an interrupt vs polling due to speed. I am following the example from github setting up my gpio as an external event for interrupt int1. https://github.com/STMicroelectronics/STMems_Standard_C_drivers/blob/master/lsm6dsv16x_STdC/examples/lsm6dsv16x_fifo_irq.cBut I am having an issue where the interrupt does not trigger unless I remove and put back the wire from the pin on the dev board. And only reads one or two times unless I remove the wire and put it back on the gpio. Any idea why this is happening? I am not sure why this is happening. I checked the pin and it is low without the imu interrupt pin, and it stays high with the interrupt pin connected. Not sure if I need pull ups or pull downs on the interrupt pin. Also, Do I need to  wake up the accelerometer when I need it? or can it stay on at all times?    void accelerometerInit() {

Hello!   I am working on a project where I would like to be able to detect which type of sensor I have connected (via I2C). For example, I am currentky planning on using a VL53L0x, but would like to be able to detect on boot if I am still using the VL53L0x or have switched to a VL53L1Cx, etc. I recognize that the initialization and read processes are a bit different, and would simply set a flag so I know which to call. Basically, I would like to be able to swap sensors in the field and be able to detect those changes. Is there any sort of ID Register? Is there a different way? I looked through the VL53L0x data sheet but did not find any mention of anything like this. Thanks!

Hi,I've been working with the LIS2DH12 sensor for quite some time, primarily utilizing the X and Y axes without any issues. However, for a new project, I also need to incorporate the Z-axis. I've noticed that while the acceleration values reported are accurate, in terms of absolute value, the sign is the opposite than expected.Is this a bug already known? I haven't found any ticket or post talking about it, and it seems strange to me.I am expecting the following axis reference.Every time I put the sensor oriented with the X or Y axis pointing down (totally vertical), I get +1g acceleration, but if do the same with the Z-Axis, I get -1g acceleration.Could any one help me?Thank you in advance.Regards,Luis 

Hello STM32 community,I've been examining the lsm303agr.h file from STMicroelectronics for the LSM303AGR accelerometer, and I came across something puzzling in line 197. In the code, it defines LSM303AGR_ACC_SENSITIVITY_2G as ((uint8_t)1), but according to the LSM303AGR datasheet, the linear acceleration sensitivity at ±2 g in normal mode is 3.9mg/LSB.Could someone help me understand why there's a discrepancy between the code definition and the datasheet specifications? I'm curious about the reasoning behind this difference and how it might impact the usage of the accelerometer in my project.Thank you in advance for any insights you can provide!

The silk screen of LIS2DLC12TR is the same as LIS2DS12TR, but the specific information and parameters of LIS2DLC12TR cannot be found