MEMS (sensors)

Hi,I am trying to get accelerometer and gyroscope readings from the LSM6DSL via a python script.Here is my code so far:def init(self):# activate gyro and accelself.write_reg(0x10,0b0110) #activate accelerometer (writing ODR_XL[3:0] in 0x10) at 416Hzself.write_reg(0x11,0b0110) #activate gyro (writing ODR_G[3:0] in 0x11)self.write_reg(0x06,1) # set fifo threshold to 1. only 1 piece of data stored at a time.self.write_reg(0x08,0b00001001) # acceleromter and gyroscope being written to FIFOself.wr

Hello, I want to use the SensorTile.box to collect IMU data over BLE. I tried modifying the BLESensors source code to suit my requirements (by increasing the characteristic size etc.). But the ST BLE Sensor app doesn't seem to support this. I only receive one sample at a time. Is there any way to do this? Code Snippet 1: #define BUFFER_SIZE ( 32 ) if (InertialFeaturesEnabled.AccIsEnable == 1U) { for(int i = 0; i < BUFFER_SIZE; i++) { STORE_LE_16(buff + BuffPos, ((uint16_t)Acc[i].Axis_x)); BuffPos += 2U; STORE_LE_16(buff + BuffPos, ((uint16_t)Acc[i].Axis_y)); BuffPos += 2U; STORE_LE_16(buff + BuffPos, ((uint16_t)Acc[i].Axis_z)); BuffPos += 2U; } } if (InertialFeaturesEnabled.GyroIsEnable == 1U) { for(int i = 0; i < BUFFER_SIZE; i++) { STORE_LE_16(buff + BuffPos, ((uint16_t)Gyro[i].Axis_x)); BuffPos += 2U; STORE_LE_16(buff + BuffPos, ((uint16_t)Gyro[i].Axi

SPI communication of ISM330DLC with microcontroller fails rarely and randomly. Most of the time, it is observed when it is on a vibrating source. Could you pls give us some idea to know more about this issue and solving it.

Hi, Could you provide any method/code to convert the acceleration values to distance(in cm)? we are able to read the acceleration but we need to know the distance covered as well. How to do it?  

Does the Mems sensor LPS22HBTR require exercising before first use? Our company uses these for detectioopn of objects hitting a membrane and we have come to find out that it appears the mems sensor sometimes needs a puff of air in order to begin working correctly. Is this true, is there some kind of standard first time procedure before using the sensor that I am not aware of?

Hello, IIS3DWB documentation provides only two data points about power consumption:Accelerometer current consumption @ 1.1mA typ.Accelerometer current consumption during power-down @ 5µA typ. I want to be woken-up on vibration levels (on X, Y or Z axis) when a specific threshold gets crossed. The datasheet provides all information about how to do that. However I miss the µA targets. I understand that ODR is fixed anyway @ 26.6667 kHz but I m guessing that power consumption should be well below the nominal 1.1.mA. My target is in the tens of µA to 100 µA range maximum. Else I need a second accelerometer to provide the function. Note: I can cut VDDIO during such mode (VDDIO distinct from VDD) but still need INT1 event toward my microcontroller. Can you provide typical power consumption in such mode so that I can finalize my architecture. ThanksBest Regards

Hello . I have to boards L476RG and 303RE and of course IKS01A3 . After installing Unicleo , I can't connect to that IKS (It's not even showing port )  . I'm changing boards but still It can't see it . On some tutorials some lady was coping some files to the folder which is being created after connecting the board to USB . But my board is not even existing in examples . Simple question : How I can connect IKS using my boards (476RG or 303RE ) vand see the values from sensors ? Best Regards , Samu  

LIS2DE12용 Junction to Ambient, LGA-12 패키지의 열 저항이 필요합니다.

Hi all,I'm currently not able to read the temperature of my lis2de12.It always returns zero. lis2de12_temperature_meas_set(&dev_ctx, LIS2DE12_TEMP_ENABLE);lis2de12_data_rate_set(&dev_ctx, LIS2DE12_ODR_400Hz );lis2de12_block_data_update_set(&dev_ctx, PROPERTY_ENABLE); What could be the issue here?I'm only reading temp, not X Y Z values yet. UPDATE:After playing around reading OUT_TEMP_L (0Ch), OUT_TEMP_H (0Dh) separately, my code now reads twice 0x80.I think my platform functions are not incrementing the register address?stati

Hi Please can you advise on the Thermal Resistance (K/W) of LSM6DSOXTR please so we can complete our ATEx evaluation. Many Thanks Dominic

Hello,LIS2DH12 accelerometer. AN5005 datasheet. How is the data in the table in column 1 (Acceleration values) calculated? (See Figure 1). I read the calculation process in the datasheet above, but did not understand it. (See Figure 2).

Hi, I am reading from IMP34DT05 (master receive, PDM), and I always receive 0x00 0x7F 0xFF 0xFF ...and 0xFF's, ever after, until reset of SAI (disable-enable). Playing sound into mic has no effect. In debugger, immediately upon SAI enabled, FIFO is full and underrun flag is on, before any data is read. Here is my current ioc config:And register values, just in case (WB55):

Dear community,I am trying to detect metalic objects (train axles) that are passing above two LIS3MDL sensors. For this purpose I am using LIS3MDL breakout boards from PololuWhat I notice is that often, what seems randomly, the signal becomes noisy during the data gathering process.To provide an example, I have plotted the sensor's X-axis output in a graph.In the left half of the graph you can see that the signal is normal, and in the right half you can see the signal become noisy.Nothing really seems to  change in the external environment at the moment that this transition occurs. We see this in multiple datasets.

Hi!We are working on product that needs to count people on the range of 3-4 meters. We designed dev.board for sths34pf80 and tetsted it with UNICO-GUI. The max range that we are getting is around two meters and therefore it looks that we need to use additional lens to extend the range.  I found one of your documentation " New industrial sensors:anomaly detection and presence" where you have descibed it working together with a lens. So we bought the same lens IML-0687 and tested it, but we are not reproduce the same results. With a lens the range is even less than without it. I played with different settings, but no success. There also should be document  AN5983, that describes the work with lens, but looks like its not created yet. Have you got any suggestions for us, to get it work? 

I tried running the code present in the github link -  https://github.com/STMicroelectronics/STMems_Standard_C_drivers/blob/master/lsm6dso_STdC/examples/lsm6dso_tap.cfor Tap detection. But in the logs, I'm not able to see the axis/sign, even after tapping(both single and double tap). 1) Do I need to configure Interrupt pins for this to work? as I tried polling.2) Can someone explain me the background of how tap detection is working? and how to configure the time. 

Is it possible to execute features such as pedometer, activity/inactivity detection, tilt/tap, with same configuration of ODR, Full scale? How can I include all these features in a single program?Can someone explain this please

 whenever double tap is detected, I'm getting interrupts for both single tap as well as double tap. currently both are routed to int2 pins. I tried routing single tap to INT1 and the double tap to INT2 pin, to ensure single tap doesn't operate under double tap condition. but both single and double tap interrupt is being generated.  How do I get/print only single tap and double tap? 

hello,i have few basic Question regarding accelerometer sensor.1. accelerometer data coming from imu sensor that is 2's compliment data, so should i receive this data in signed integer or unsigned integer? 2. i want to know whatever raw data is coming from this sensor resgistors of accelerometer that is mg/LSB or only g ? if it is mg/LSB then how i can covert into g (refer ±2g)?3. formula of convert g into (-180° to 0 to 180°) ?please refer below attached  code or screenshorts

Hello,I set ODR_XL target during inactivity(INACTIVITY_DUR XL_INACT_ODR_[1:0]), but when I read CTR1 ODR in inactivity mode, it doesn't change to the setting, why?

Hello,First time posting in this forum!I'm evaluting the STHS34PF80 sensor and went through these materials: Datasheet & AN5867.However, I could not find any information regarding the interpretation of the object temperature (after calculating the signed value of 16 bit (TOBJECT_L and TOBJECT_H), then divide by the sensitivity).My very first thought was that this represents the so-called absolute object temperature value, as the sensor is T-MOS based technology and its sensitivity is calibrated with a black body covering the full field of view. However, the function of f(TOBJECT_L, TOBJECT_H, SENS_DATA), doesn't give me that.Rather I have a feeling that it gives me the difference between the object temperature and the ambient temperature. I have attached an image to show you how the values changed when I have my hand approaching the sensor, to completely cover it, then get my hand off the sensor.

We are currently using the ST LPS33HW pressure sensor in an industrial IoT application. I am aware that this product is being phased out, and we have plans to replace it with a different offering from ST. However, right now, we have 100s of these in the field and have noticed a couple anomalies.In our application, we are actually using the two LPS33HW per system to get a pressure difference between two regions in an outdoor facility. Typically, these regions are approximately the same temperature. However, with some of the cold weather recently in the US, significant temperature differences (10°C or more) have been observed, and the pressure difference between our sensors in each location show a correlated pressure shift. We would like to calibrate this out if possible.I am aware that the one point calibration exists, and we plan to implement this at some point in manufacturing. However, we're looking for solutions to post-process data from the parts already in the fie

I am trying to get the raw data (with timestamp included) from a few IIO devices (hardware sensors, such as accelerometer, gyroscope, magnetometer and barometer) mounted on a linux platform and with the ST drivers. I was able to get the data for the accelerometer and for the gyroscope using the libiio library within a C++ code or using sysfs commands (enabling the buffer). However, for the magnetometer and for the barometer it seems (I'm not expert in this field) this procedure doesn't work. In particular, with the magnetometer (device2), I am able to get the data but not the timestamp (that remains 0).root@dab:/sys/devices/platform/soc@0/soc@0:bus@30800000/30a50000.i2c/i2c-3/3-001e/iio:device2/buffer# hexdump -C /dev/iio:\device200000000  85 01 20 00 34 fe

Unico Version: 9.17.2.10FW: V3.60.7HW: MKI109V3 + MKI238AOS: Win10Hi,Can someone explain how the X/Y/Z axis on Unico are related to the OUT_X/Y/Z_H/L register readouts from the LIS2DUX12? On first glance, it looked like X-axis is not getting updated at all (I've tried with two MKI238A units, same results), but after looking closer at the register readout, it seemed like Y = OUT_X, Z = OUT_Y, and I have no idea where X came from or where OUT_Z went. What I see on the plots - no movement on X-axis, no matter how much I shook it.

Hi all, We have integrated an LIS2MDL magnetometer into our custom PCB. We have recently been running some tests on the boards, and are collection raw data from the sensor via the I2C line. In our testing, we have found that different boards appear to be outputting different raw values in what should be the same conditions. What we have done is taken the raw data from the devices, calculated the magnitude ( sqrt(mag_x^2 + mag_y^2 + mag_z^2) ) which provides the following pieces of information. All devices are placed in the exact same location in the exact same orientation when the data is recorded. Values are in LSBs, where 1LSB = 1.5 mG: DeviceX DirectionY DirectionZ Direction Magnitude# 1

I have this MEMS sensor on a custom board to detect landscape or portrait mode of my device.The problem is that it doesn't generate an interrupt.- 4D mode should be sufficient.- Range 2g- Tested different ODR settings. My current code is now:     void tilt_init(void) { dev_ctx.write_reg = platform_write; dev_ctx.read_reg = platform_read; dev_ctx.handle = &SENSOR_BUS; lis2de12_boot_set(&dev_ctx, PROPERTY_ENABLE); lis2de12_pin_sdo_sa0_mode_set(&dev_ctx, LIS2DE12_PULL_UP_DISCONNECT); lis2de12_high_pass_mode_set(&dev_ctx, LIS2DE12_NORMAL); lis2de12_device_id_get(&dev_ctx, &whoamI); /*Set Output Data Rate */ lis2de12_data_rate_set(&dev_ctx, LIS2DE12_ODR_400Hz ); /*Set full scale */ lis2de12_full_scale_set(&dev_ctx, LIS2DE12_2g); /* Enable Block Data Update */ lis2de12_block_data_update