Imaging (sensors)

I‘ve seen that on the datasheet of VL53L8CH it saysHighly configurable CNH in order to meet user expectations– 64 zones with 18 bins at 15 Hz– 32 zones with 36 bins at 15 Hz– 16 zones with 48 bins at 25 HzMy question is how can I configure the frame rate of the CNH data output and how can I estimate the real data output frame rate？

Hi,I'm using P-Nucleo-VL53L8A1 multi-zone time of flight sensors for smoke detection in the open air.I've seen STSW-img043 MZAI_EVK_v1.0.1 for calibration and recording sensor data of VL53L8CH.I would like to know what is the best Machine learning method (ANN, CNN or ...) for training a reliable model with small footprint for STM32WLE series.Does STMicroelectronics support ready to go example for building and training an ML model for classification of VL53L8CH data?Which tools should be used to convert the model to a c library for embedding the ML model in the MCU? Thanks.

Hi,Just receive the SATEL-VL53L8 kit. It contains 2 boards but which one is the VL53L8CX or VL53L8CH.RegardsJP

Angle of incidence webinar question follow up… Original question - What angle of incidence performance information is available for these devices?  More detail - For multizone FlightSense sensors, looking into the corner of two walls for example or at a concave/convex  surface, each zone is not perpendicular to the sensor.  At high angles of incidence I assume the distance result from that zone will the average across the area of the zone.  Is that correct?  I'm assuming that at very high angles the histogram function might start to come into play, perhaps not, but if so what angle would the histogram function start to think there were multiple targets?  Or does the histogram functionality recognize that the distribution is kind of linear so the surface it's viewing must be at some angle?  If it does recognize that it's at an angle does it use this information for the average distance to the surface and or to calculate the estimated c

Hi, could I please get access to the 3D CAD Models for the LPS28DFW and VL53L4CD products? On both of their "CAD Resources" page you only offer the PCB Footprint and Symbol and not the 3D Model. I need to utilize the 3D model for designing a component that utilize both of these sensors. The datasheet dimensional information provided is not sufficient for this. Any help with this would be greatly appreciated. Thank you

UM2884-Rev 3, chapter 5.5 Results interpretation, shows in table 4 (list of available target status) a short description of the target status 0 to 13 and 255. Question 1: Our application sometimes also shows status 14, which is not described there. What is its meaning? Question 2: Some of the short descriptions are self-explanatory, others are not clear. Is it possible to provide a more detailed description that explains the status in more detail, i.e. what it really means, under what conditions does it occur and what is recommended to avoid it?

Hi, i would like to increase the range of the VL6180X but i don't know which register i have to modify. I see the code in the RangingAndALS_NucleoXXX sample but i don't understand how the VL6180X register have been modified in order to increase the measuring range.

Hi there, I'm planning to integrate the VL53L4CD sensor into my custom board, which features the STM32G484CEU6 MCU. After reviewing the datasheet, I found that the sensor operates within a voltage range of 2.6-3.5V (nom 2.8V). I just wanted to double-check if it's safe to connect this sensor directly to the MCU, considering that the I2C interface of the MCU is 3.3V. Thank

Hi all,We are working on developing an LPG level monitoring system using BlueNRG-LPS MCU and VL53 sensor series.I am very new to these specific sensors.Can we have VL53 series installed externally under the metallic cylinder?Are they also using the principle of acoustic impedence?Thanks

Hi，I'm using the VL53L4CX and I  find  that using the xtalk calibration still doesn't completely remove the data from the cover glass. Is there any other way to remove the near distance data?The VL53L0CX can adjust the threshold of a signal by a function, can the LV53L4CX do the same? Thanks 

Hi Team, We have our customized projector majorly focused on educational field purpose. Its a short through projector with 16:9 aspect ratio. We are planning to implement Auto keystone and Auto Focus using VL53L5CX TOF sensor. Do you have any driver support for this particular implementation.?? Any Knowledge article related to this implementation??     Thanks & Regards Deep_Bang   

Hi All,I want to port VL53L4CX bare driver to my M0+ MCU (36KB SRAM) however it cannot fit into RAM (.bss)What's RAM requirement of VL53L4CX bare driver ?(I used VL53L1CX ULD and VL53L4CD ULD driver that's ok) or how to trim down the memory requirement ? BR,Sam

 From the user manual "A Guide for Using the Artificial Intelligence Enabler VL53L7CH and VL53L8CH Multizone Time-of-Flight (ToF) Sensors" -- specifically the "Histogram Configuration" section -- it mentions that we can use 'start_bin', 'num_bins', and 'sub_sample' to configure the CNH data. I've implemented this configuration using the Example_12_cnh_data.c file, and it works well.My first question is, how many bins are there in the device's raw histogram bins?My second question is, how can I get all raw histogram bins?     Currently, I find that in 4x4 mode, I can obtain a maximum of 75 bins, and in 8x8 mode, a maximum of 18 bins. Is it possible to access all raw histogram bins by editing the API's source code? In other words, assuming the device's raw histogram bins number is 100, how can I obtain 4x4x100 CNH in 4x4 mode, and how to get 8x8x100 CNH in 8x8 mode?Thanks- Jian

Hello.Today I will test the VL53L8A evaluation version in the outdoor (cloudy) test data, the code is automatically generated by the STM32Cube. I irradiated VL53L8A to the wall, at about 1.75m, with almost no data. At 4m, the serial port directly showed no data. Is there any problem with my use?In the future, I may use 950nm narrowband filter in outdoor test, any suggestions?The picture shows the measured values around 4m.

Hi,I'm trying to download the STSW-IMG043 software package for VL53L7CH and VL53L8CH.https://www.st.com/en/embedded-software/stsw-img043.html# It fails every time that I try to download. All other packages from the imaging software section are available but this STSW-IMG043 one. We need it for  x-Nucleo-53l7a1 development.https://www.st.com/en/embedded-software/imaging-software/products.htmlCould you please let me know how I can download STSW-IMG043?Thanks. 

Hi,I am using an esp32 to read out the sensor data of a VL53L3CX. I've tried the example code for the distance sensor and slightly modified it by commenting the if statement out which checks if the distance changed to get continiously data:  #define XSHUT_PIN 6 #define INT_PIN 7 #define SERIAL_BAUD_RATE 115200 #define DEVICE_I2C_ADDR 0x12 VL53LX vl53lx(&Wire, XSHUT_PIN); // Holds latest measured distances (up to 4) #define MAX_OBJECTS 4 uint16_t dist[MAX_OBJECTS]; //---------------------------------------- // intaISR - Interrupt handler //---------------------------------------- portMUX_TYPE syncINTA = portMUX_INITIALIZER_UNLOCKED; // For handling ISR entry/exit bool intaINT = false; // True = Interrupt occured unsigned long intervalTimer; // Timer used for checking for lost interrupts void IRAM_ATTR intaISR() { portENTER_CRITICAL(&syncINTA); intaINT = true; // Signal that MCP INTA occu

Hello all,I am having difficulty using multiple VL53L5CX sensors on the same I2C bus on my Jetson Nano. I am able to get a single one working but not multiple. I am following the procedure in the documentation by pulling the LPn low of the sensor I don't want to change the address of and then changing the address of the other sensor, then pulling the LPn pin high again. When I run  my program it outputs the following:Opened ST TOF Dev = 11Opened ST TOF Dev = 12testSensor detectedSensor InitializedSet Address failed 254.When I run i2cdetect -y -r 1 it shows 2 devices detected at 0x20 and 0x29, but I am not changing the address of the other sensor to 0x20. Here is the relevant section of my code below: // setup GPIO for enable pins int gpio_init = gpioInitialise(); gpioSetMode(7, JET_OUTPUT); gpioSetMode(8, JET_OUTPUT); gpioWrite(7,0); gpioWrite(8,0); gpioWrite(7,1); gpio

hi ...how are you .....what cause the sensor(Vl6180X) when it gets the power (3.24 volt if I connect it to 3.3v output pin and 5.4 volt if I connect it to vu output pin ) and in both cases it didnot respond and the led light in it didnot blink or lights up...what are the main reasons behind that ....the auther of the project code his design uses espminid1 and he told me I can use the main code on esp8266 nodemcu v3 as that is the one I bought as I found it only in the store (my design uses nodemcu v3 ) ....so what are the hardware differences or issues that cause that ?

I am trying to use the VL53L4CD sensor in our application, however I am seeing that while using a black latex glove almost on top of the surface (distance of less than 5mm) that it reports distances > 300mm.  It seems to read okay with a range of 10mm or higher.  Our application needs to range fairly close 35 to 1mm.  How can I resolve this?

When powered with 3.6V (both AVDD and IOVDD), VL53L5CX does most of the time does not enter LP mode (via the I2C command).At 3.5V most of the time LP mode is entered correctly, and rarely - incorrectly. At 3.4V, LP mode is entered always correctly.According to the datasheet, all of these are valid combinations.Searching in the documentation so far does not explain the results.Could anybody shed some light on the subject (else, it will be needed to modify the hardware)?  

Hello!I have never used a Jetson Nano before and am rather unfamiliar with lower level programming. I have a VL53L4CX attached to the correct Jetson nano pins and can see the device when I run i2cdetect -r -y 1 at address 0x29. My question is whats next. I've done a lot of research online and have no idea how to incorporate this into an actual program that reads the distance detected by the sensor. The goal of the project is to attach 8 of these sensors to a MUX and then get data from all of them by changing i2c ports. I have seen posts referring to the linux driver, which I have downloaded but don't know how to install or use. I have a python program that sends bytes over i2c, is it as simple as sending a specific message over i2c and then reading a response? If so, what is that message?

I want to limpet  VL53L5CX driver so i used VL53L5CX_SimpleRanging driver for reference. so i can Enable USE_BARE_DRIVER ? and i got proper output? or you can give any example code where USE_BARE_DRIVER used , so i can use it and implement.  Also below data is required to write /* Download FW into VL53L5 */status |= WrByte(&(p_dev->platform), 0x7fff, 0x09);status |= WrMulti(&(p_dev->platform),0,(uint8_t*)&VL53L5CX_FIRMWARE[0],0x8000);status |= WrByte(&(p_dev->platform), 0x7fff, 0x0a);status |= WrMulti(&(p_dev->platform),0,(uint8_t*)&VL53L5CX_FIRMWARE[0x8000],0x8000);status |= WrByte(&(p_dev->platform), 0x7fff, 0x0b);status |= WrMulti(&(p_dev->platform),0,(uint8_t*)&VL53L5CX_FIRMWARE[0x10000],0x5000);status |= WrByte(&(p_dev->platform), 0x7fff, 0x01);

i want to interface vl53l5cx sensor with nordic Nrf52840 board but in stm project there are too many register read and write so just i want few register for get the distance from tof sensor so which minimum registers i have to configure ? and initialize of  sensor rd multi function used so it is not working properly  provide me support

I have already purchased P-NUCLEO-53L8A1 and VL53L8CH. How should I join them together and read out the histogram data. Can you provide a detailed guideline or experiment video for me? 

Hi，I have two questions about the SPAD:1: How does the L4CX select which part to turn off and which part to turn on when the signal is so large that the SPAD needs to be scaled down? Because i have a Lens installed on the light receiving area,  I'm worried if the spad  turn off  the signal-sufficient part .2: Is it possible to adjust my SPAD area by ROI? The manual of the L4CX says that this function is not supported, but I found the API function . Below I would like to explain the problem I'm having:In order to increase the  signal at the far end, I installed a spotlight lens on the light receiving part.I then noticed that when detecting the appearance and disappearance of white objects in close distance, the data returned by the L4CX was not very stable, with continuous error reporting and data abnormality.I found that when the anomaly occurred, both the signal and the spad were abnormal,