MEMS (sensors)

Hello everyoneI need to have the pspice model of LIS344ALH (i know that this product is not longer available)I try do it with the datasheet but i don't have enought infoCan someone help with it ? :)Thanks ;)

I am working on PDM microphone with STM32L476RG using DFSDM peripheral. I need to know how to get the live data streaming audio output data from stm32 and want to save as .csv.

hello,     i'm working on ASM330LHH IMU sensor, here raw value is continuously fluctuating even sensor is in untouch condition(fluctuation is between -1 to 6). is it possible to make it zero? so how can i stop this fluctuation. plz share suggetions or method.

Hi,I have attempted to follow the AN5201 application note page 26 to configure the IIS2DLPC accelerometer to generate an interrupt at every threshold however this interrupt is never generated. I have tried to print the value of SIXD_SRC register and that is always reporting 0 so I assume that's the reason for not generating an interrupt? Below is the configuration I used, I have also tried to latch the interrupt but even that didn't help so I commented it. If I read the OUTPUT registers I am able to see the correct data and see the thresholds being reachedI would appreciate any help.Kind RegardsManpreet SinghAcc_handler.cntrl_reg.CTRL1_value = 0x64; //ODR = 200 Hz, high-performance//Acc_handler.cntrl_reg.CTRL3_value = 0x10; //Latched mode -> interrupt is active until SIXD_SRC is not readAcc_handler.cntrl_reg.CTRL4_value = 0x80; //Route 6D interrupt bit to INT1Acc_handler.cntrl_reg.CTRL6_value = 0x04; // FS ±2 g, LOW_NOISE enabledAcc_handler.cntrl_reg.CTRL7_value = 0x20; // Do n

Hello,I am working with the IIS3DWB for a vibration monitoring sensor, and have a few questions about the ODR (Output Data Rate) accuracy, hoping someone can help me.1. I know that on the datasheet the ODR accuracy is stated as +-1% typ, or +-2% Max.I want to know, does this accuracy specification include using the INTERNAL_FREQ_FINE register to correct the ODR (See page 45)? If we use the contents of that register is the tolerance considered more accurate?2. I am also curious if anyone knows the INTERNAL_FREQ_FINE register is set once in manufacture, or if the contents change over time. Should I read this register once or read it regularly to update my data rate correction.2.a. I know there is also a characteristic to describe the ODR change with respect to temperature. Is this characteristic captured in the adjustment provided by the INTERNAL_FREQ_FINE register? Or would it be beneficial for me to apply this correction in post processing?Thank you in advance to anyone who can help me

Hi,I want to run an application for a week. This video says the battery life is 10 hours:https://youtu.be/gFkIcrUkP5w?t=452s Question:Can I use an external power supply like this and set it to 5v:https://www.adafruit.com/product/4880 Connect it's barrel jack to this barrel jack to USB C adapter:https://www.adafruit.com/product/4536 and plug it into the USB C port on the SensorTile.box Pro?Thanks,Bill

Hi,I have a Sensortile .Box Pro board and I plugged a H3LIS331DL high range accelerometer on its top socket.Is there any available code to log data from H3LIS331DL? I thought all MEMS evaulation boards from ST (STEVAL-MKI153V1 in this case) were supported.Regards

Hi,I am trying to calculate the MTBF (mean time between failures) value for the ASM330LHHTR module. Please suggest any techniques for the same. I am currently using the Qjc (Junction to Case Thermal Resistance) and Pd (Power Dissipation) values to calculate the same.Please provide the Qjc value for ASM330LHHTR at 35 degrees Celsius or suggest another appropriate method to calculate the MTBF value for the same. Thanks,OF

Hi ST Community,I currently have FSM and an MLC .ucf files. I have followed the instructions in DT0147 "Advanced design tips for the machine learning core and finite state machine using Unico-GUI", and have attempted to merge the FSM and MLC files into one .ucf for use in our product. Unfortunately, when I uploaded the new .ucf file, I noticed that neither the FSM, nor the MLC portions were working.Looking into the merged .ucf file, I noticed that the very beginning does not start like the rest of the .ucf files I have created in the past, namely the turning off of the accelerometer and gyroscope and entering the embedded function mode. Below is the first few lines of the Merged.ucf:Ac 09 64Ac 09 04Ac 02 41Ac 08 64Ac 02 41Ac 08 66Ac 02 41Ac 08 67Ac 02 41Ac 08 69Ac 02 41Ac 08 6AAc 02 41Ac 08 6CAc 02 41Ac 08 6DI have also attached the entire file in case it is needed (converted to a .txt for the forum requirements).I am wondering if there is an issue with the Unico merge functionality, o

Hello, I am using a LSM303AGR sensor. I am several questions about the datasheet. ------------------------------------------------------------------------------------------------------------------------------------------Firstly, I don't understand why the linear acceleration sensitivity in table 3 Sensor characteristics has a value of 11.72 mg/LSB for +-16g in high resolution (HR) mode.In HR mode : n = 12 bits. So +/-16g => range : 32g Sensitivity = Range / 2^n = 32 / 4096 = 7.8125 mg/LSB  In the datasheet you give 11.72mg/LSB... (48/2^12 = 11.72mg/LSB but why 24 * 2 ?)My calculations are good with your result from Table 3 for each mode and for each full-scale EXCEPT for +/-16g. I think +/-24g has been used for you Table 3 but I don't know why... ----------------------------------------------------------------------------------------------------------------------------------------- Secondly, in table 96, line "Set_FREQ", what do you mean by "after PD condition" ? Thanks a

I'm using Hypsometric formula to Calculate Altitude by using Pressure & Temperature. ( Source Code used to read the sensor https://github.com/stm32duino/LPS22HB )The Pressure value & Temperature are not in Sync.. Temperature Increases irrespective of Air temperature, which in turn causes wrong altitude value. When Move upside Pressure & temp should decrease.. But only pressure decrease & temp remain same or increase. What is the best way to calculate Altitude ?How to do OPC ?? Thanks In Advance.

Hello, I am trying to use the MEMSMIC1 example on my nucleo-wb55 board, specifically the microphones streaming exampe to record sounds with audacity. I am able to compile and run the code. I am also able to see the microphone show up in the device manager, and can select it from recording options in audacity, but it does not detect any sound.Could there be a reason for this other than an issue with the microphones? I have already tried two different microphones and both dont record although they are recognised by the computer

Hi,I'm trying to solve dead-reckoning over small distances and durations (few centimeters to few meters, over 2s to 20s approx. each time). After reading a lot of documentation ad publications, this seems pretty doable over small distances because the drift doesn't accumulate too much.I have a LSM6DSV16B IMU sensor, use the SFLP block to compensate for gravity and gyroscope bias, then I filter and integrate the accelerometer data twice to estimate distance made (with speed reset after movement to remove integration error). At this point I'm not even trying to plot a trajectory, but just estimate an absolute distance made during a movement.To test setup consists of a 1m long rail with small tilt, and an optical sensor measuring displacement (100Hz sampling) to compare the results. The sensor is placed on an object hanging from that rail, and dropped without initial speed. Sampling of accelerometer, gyroscope and SFLP, along with FIFO batching, are all done at 240Hz.Extracted data from o

Evaluating the use of LSM6DSV32X + external magnetometer in sensor hub mode to achieve 9Dof. Is there a list of compatible magnetometers that should be used for this setup to work? Also is there  a pass through mode where we could talk directly to the magnetometer/external sensor through LSM6DSV32X.

HelloI have been trying to setup 6D orientation interrupt using IIS2DLPC and I am not getting any interrupts on INT1 pin when the orientation changes beyond threshold. For debugging I tried printing SIXD_SRC (3Ah)  and ALL_INT_SRC (3Bh)  registers. In the SIXD_SRC register I am seeing the bit 6D_IA (a change in position is detected) is set and in register ALL_INT_SRC I am seeing the bit 6D_IA (a change in position detected) is also set but no interrupts are generated.I have also tried changing Interrupt active high/low and Latched Interrupt settings both didnt work. Also tried adding internal pullup and pulldown from the micro controller that also didn't work. I2C settings done for 6D orientation interrupt:1. Write 64h in CTRL1 // Turn on the accl // ODR = 200 Hz, High-Performance 2. Write 04h in CTRL6 // FS ±2 g, LOW_NOISE enabled 3. Write 20h in CTRL7 // Do not use low-pass filter for 6D, enable interrupts 4. Write 40h in TAP_THS_X // Set 6D threshold (6D_THS[1:0] = 10b = 6

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Hi guysI'm pretty new to the ST world. Just got my hands on an STWINKT1B, hoping to dive into its ultrasonic sound detection features. I spent today tinkering with it, trying to wrap my head around how it all works.So, I've got STM32CubeProgrammer installed to load up new firmware onto it. When I connect it to my computer with the ST-LINK dongle and power it up via USB, everything's fine. But here's the problem: I can't seem to program it using just the USB itself. Every time I try, I get hit with a "No DFU Detected" message. And to make matters worse, when I plug it in via USB, my Windows 11 doesn't even recognize it as a new device, though the ST-LINK dongle gets recognized.I really need USB streaming functionality, but I'm stumped on how to fix this. Any ideas would be a lifesaver. Thanks a bunch!Amir 

Hi, We are using IMU with part number LSM6DSO32TR in our application. Kindly provide us with LSM6DSO32TR details: 1) MTBF(Mean time between failures) 2) FIT(Failure in Time) 3) ROHS compliant (Certificate) I would be a great help!  

I recently updated to a macOS and am have downloaded FP-SNS-DATALOG2 function pack and was going to use the HSDPython_SDK to log data from my STEVAL-STWINBX1, however it appears that macOS is not supported, is that correct?  No love for macOS or am I missing something simple? Thank You

Hello, I'm working with the lsm6do. The lsm6dso is configured to 6,67kHz sampling rate of both, acceleration and gyro data. The INT1 pin will be set if gyro and/or acc data is available (INT1_CTRL = 0x03). In my application I'm polling the int1 pin (every 60us) and if int1 is set, I'm start reading from the status register (0x1E) till the acceleration z data (including 0x2D). I've set the BDU bit and auto increment.Without the second sample, I always get the results (gyro and acc) at the same time. Are the GDA and XLDA bits always set together?Is there any synchronisation between the acc and gyro data or sampling start/end? I can't find any information about the synchronization inside the documentationI've done some tests and it seems like the first time the int1 pin is set I get both acc and gyro date. The second time the int1 pin is set I only get gyro data. And all the following times I get both, acc and gyro data. This behavior let me struggle a little bit, because withou

As customer's request, can we have the latest SGS report for parts: ST:L3GD20H & ST:LSM303AGR?

Hi all,I am trying to implement the  LIS2DUXS12 into a design and I am wondering if it is possible to still use the interrupts while using the Qvar sensors. Ideally, I need a way to detect when the device is on the human body and also a way to wake up MCU when motion is detected. It appears this isnt possible with the Qvar leads taking up the interrupt lines.Will this be possible with this device? Thanks

GreetingsI am running an application where I am using the LIS2DW12 accelerometer. I am using it for classical sampling of acceleration values in cont-to-fifo mode, which works fine. The FIFO is configured with the High pass filter enabled. I now want an additional 10 samples (preferably more than 4 samples but 10 being the max) with the high pass filter disabled. I have tried running the LIS2DW12 in single-sampling mode 10 times, with the following config:  -WriteReg(CTRL6, 2G full scale, ODR/2, LOW Noise enabled, HPF disabled) -WriteReg(Fifo_ctrl, bypass) -WriteReg(CTRL3, I2C_Single data conversion enabled) -WriteReg(CTRL3, Start single data conversion) while(DRDY bit is not set) { Readreg(status) } - Read data registers(x, y, z) -WriteReg(CTRL6, 2G full scale, ODR/2, LOW Noise disabled, HPF enabled) -WriteReg(Fifo_ctrl, bypass mode) -WriteReg(Fifo_ctrl, cont-to-fifo mode) -WriteReg(CTRL3, Latched interrupts enabled)  Once the above code runs in the loop an

We have designed the LIS3DH onto a custom PCBA, and we are seeing some oddities with the sensor readings post manufacturing. The PCBA goes into a two part injection molded enclosure made of ABS, and the two halves are ultrasonically welded together. After this process, we are seeing what appears to be an offset zero issue along two of the axes. The entire range of gravity vectors is as expected at ~18.9m/s^2. However, positive Z facing toward the earth yields a gravity vector magnitude of ~13.8m/s^2 and negative Z down reads ~5.1m/s^2.Has anyone else seen something like this or have ideas for how to fix this?  

I use LSM6DSR,  I set Accelerometer ODR selection can read data, but i choose fifo mode to read data, i don't read data, i set CTRL3_C is 0x01, CTRL1_XL is 0x50,  CTRL3_C is 0x40, CTRL5_C is 0x20, CTRL9_XL is 0xf8, INT1_CTRL is 0x01, INT2_CTRL is 0x08, CTRL6_C is 0xc8,  FIFO_CTRL1 is 0xc8, FIFO_CTRL2 is 0x90, FIFO_CTRL3 is 0x05, FIFO_CTRL4 is 0xf6, Is there something wrong with my settings?