Imaging (sensors)

Hello,VL53L8CA is active product on your product list but i couldn't find a datasheet and sample.I have contacted with my local reseller buying termin is 22 weeks. Before buying i would like to have a datasheet and sample. What is the last situation of VL53L8CA?  Thanks in advance,  

Hi!I’d like to know if the Vl53L8xx product series support “SPI daisy-chaining” ?For a project, I’ll need few of those, either “straight” along a line segment ( +/- like Neonode’s ZForce sensor bar ), as a “grid”, or as an “arc section” ( that is, a curved line segment ), and I’d like to maximize speed while minimize the needed pins to control the whole set of n sensors.Regarding my choice among the whole “VL53L” product lineup, it seems it’s the only one that supports SPI, which is one of the main needs for the project, the others being the smallest amount of processing needed on the “controller” uC, and a precise-enough detection of multiplemfingers up to 10cm from the sensor in a reliable manner.From what I can read in the datasheet, it does some “auto-incrementing” stuff when begin given more than the expected 15+8 bits, which may get in the way or even prevent some tricks I had in mind totally ( I guess, wrongly ? )This being said, I could also be cool repurposing the GPIO1 of oth

Hi，I would like to know the meaning of each data in the L4CX calibration data(VL53LX_CalibrationData_t in API）, because there is a lot of data for this IC, and I would like to confirm the status of the calibration from the data.Thank you.

Hello everybody,I have connected a SATEL-VL53L8 board to my ESP32, and I am trying to run the basic ranging example, using ULD driver. When I run the example, I get VL53L8CX ULD Loading failed in the serial terminal. Trying to figure out what's wrong, I have connected a logic analyzer to the SPI bus, so here is what I know so far:The vl53l8cx_is_alive() function gets a proper response from the chip (0xF0, 0x0C), indicating that the hardware is connected properly, and the SPI bus communication works as expected: The function vl53l8cx_init goes on, and the firmware image is downloaded in 3 pieces (32K + 32K + 20K). There is a piece of code (lines 335-342) that checks if the FW is correctly downloaded. There is a single read command, and the value read from 0x7FFF is 0x00, and I'm not sure whether this could be an indication of the success status.  /* Check if FW correctly downloaded */status |= WrByte(&(p_dev->platform), 0x7fff, 0x01);status |= WrByte

I am experimenting with the VL53L5/VL53L8 sensors. For multi-target there are the options of target order of strongest and nearest. This is not a difficult concept. However, I am curious about the algorithm for detecting the peaks in the histogram. I assume there must be some thresholding, so small peaks caused by noise(?) are ignored. I can't see a way to set the threshold, however I see this being difficult, better different thresholds work for different ambient light levels, light noise levels etc... After some quick experiments, I haven't seen any problems. Using nearest rather than strongest target order, may be more sensitive to noise conditions. Any thoughts?

I will be testing out the VL53L8CX_NB, perhaps next week. I notice it has a setting for the number of targets detected per zone. My plan is to have 8x8 setting, so 64 zones. I note the firmware has setting of 1 target per zone. The current setting is strongest target order. My plan is to set the target order to nearest and the target number to 2. Will there be sufficient memory RAM for this? With regards to RAM does this mean the host controller, or the TOF sensor device. If the issue is at the host controller end, it should be easier to resolve. I am hoping just changing this parameter to 2, will be sufficient, for accessing data with regards to 2 targets.

hello, I'm using a vl53l1cb satel board, but I'm not been able to get a reading greater than 4m (aprox).I'm using the vl53l1 zephyr RTOS driver, and I'm aware that the roi selection is different than the one of the UM2133, so I'm not selecting a specific roi, but still the maximun distance reported by the sensor is 4. Do you guys have any suggestion on how to be able to get the maximun distance reading using the zephyr driver?

Hello,We want to do an experiment for smoke detection with ST's ToF technology. We are using the following STM products:    - VL53L8CH    - x-Nucleo-53l7a1     - STSW-IMG043The GUI has so many configurations and it provides raw data and algorithm output data. We are interested in raw data and we want to know which configuration affects the row data. I mean in the same environment, will the sensor raw data change if we change the configuration?What is the effect of ambient light on the sensor's raw outputs? Thank you!

Hello,I am trying to do some ray tracing simulation for your VL53L8CH in a specific environment. I was wondering if you have any data beyond the "Field of Illumination" diagram for your VCSEL emitter (I assume you make your own emitters in-house). An "IESNA TM25" or "SPEOS" ray file would be amazing, but even just a maximum output power in lumens, watts, candelas, etc. would be helpful. That way I can at least know what the percentages in the "Field of Illumination" diagram mean. Also, if you have any detailed CAD on your chip that would allow me to place the emitter in the correct location on the sensor, that would be helpful as well. I have recreated it from your datasheet, but that doesn't have details on how deep the VCSEL is or what shape it is.Thanks,Garrett

Hello,   I'm trying to use the VD6283 sensor on a X-NUCLEO-6283A1 plugged in a Nucleo-64 STM32F401.   For this, I've installed the latest ST-Link drivers and the software STSW-IMG301. My board is well recognized on Windows device manager as a "STM STLink Virtual COM Port", but when I try to launch the VD6283_GUI application, I've the following error : "SensorSystem..ctor():Le format de la chaîne d'entrée est incorrect" / "SensorSystem..ctor():Input string is not in correct format".   I've tried to launch it also with admin privileges but it's still not working.   Application version : 1.0.0 - r862 Windows : 11 Pro   Thanks

Hello, i want to use the VL53L1X, or equal TOF sensor in humid and pressurised environments. First Prototypen are potted into Epoxyd-Resin.  I also want to try parylene coating, because of hydrophob surface.  For that reason I want to ask, if anyone has done this case succesfully, or wich hydrophob potting material is preffered?  Maybe there is already a easier solution on the market for optical measurements in humid enviroment?    Many thanks in advance,    MIKE    

I am using the IMG403 EVK GUI to test and validate the module VL53L7CH in a product. I am facing a few issues in the GUI. While trying to plot the histogram in "Zone 8x8" mode, I am getting an error. Similarly, if I change the configuration "MZ-AI Configuration" settings spreadsheet, again I am getting another error. I can be able to just run the preset configuration but can't be able to modify the parameters. My aim to test the module with all possible configurations. Kindly help me on this issue.

Hi,  I'm using a VL53L4CD_SATEL board and I would like to switch between Thresholds detection interrupt and Data available interrupt. To be more clear, by default, I have an interrupt each time a measurement is available.If I check the low/high/window parameters of DetectionThresholds, they are set to 0. Now if I set a Threshold, for example  sensor.VL53L4CD_SetDetectionThresholds(150,150, 0);now my IT is only triggered when the range is below150mm. But my problem is when I want to come back in "normal" case, without threshold, I would like to have an IT triggered at each time a data is available, i've tried to put ma values back to 0 with  sensor.VL53L4CD_SetDetectionThresholds(0,0, 0);but it is not working at all. Is there a way to "cancel" the threshold IT properly and come back to "normal" interrupt? Thank in advance Vincent

Hello, I am trying to get gesture detection (swipe UP, DOWN, LEFT, RIGHT) with the VL53L8CX working on an STM32U575 running an RTOS.  I currently have a X-NUCLEO-53L8A1 plugged into a NUCLEO-U575ZI-Q board running Segger embOS in a C++ project.  I have been able to successfully configure and collect ranging data from the ToF sensor by extracting and modifying the example code in en.STSW-IMG040.zip\VL53L8CX_ULD_driver_1.2.1\Examples\ and using HAL_I2C_Mem_Write() and HAL_I2C_Mem_Read() for the implementation for the platform WrXxx() and RdXxx() functions.However, when I try to use the GestureKit ULD in en.STSW-IMG035_M33.zip and code extracted and modified from the example in en.STSW-IMG035_F401.zip\VL53L5_GestureKit_ULD_1.5.0\Example\Gesture\gestures_example.c:gesture_library_init_configure() fails because GW_set_frequency() fails with error -6, indicating that the frequency is invalid. The supplied frequency is the default of 20.0 (calculated from 1000.0/Params.RangingPeriod

Hello,  As suggested in my last post here, I am trying to read the ID Value of a VL53L1X sensor. I get a read failure when I attempt to read the register. Strangely, I have slightly modified code that I am using to read the ID register of a VL53l0X which I am able to run successfully. Further, I know I do not have a hardware or wiring problem because I am able to use the sensor for ranging just fine. I have copied my basic ESP32 Arduino sketch below, any ideas what I'm doing wrong? Thanks in advance   #include <Wire.h> // Include Wire library for I2C communication // I2C address of the VL53L1X sensor (0x29) #define VL53L1X_ADDRESS 0x29 // Register addresses #define VL53L1X_IDENTIFICATION_MODEL_ID 0x010F // Model ID register (lower byte) #define VL53L1X_IDENTIFICATION_REVISION 0x0110 // Model revision register (upper byte) void setup() { Serial.begin(115200); Serial.println("Starting VL53L1X sensor test (I2C access)"); // Read ID registers directly

Hello community, I am working on a project that involves measuring a precise distance of 2 meters from the ground during an object’s free fall. I am considering using Time-of-Flight (ToF) modules from ST for this purpose and would like some guidance on which modules would be best suited for this application. Could you please advise if the VL53L8 module, or any other ST ToF modules, would be capable of accurately measuring a 2-meter distance in a free-fall scenario? Additionally, I am concerned about environmental factors such as bright sunlight and fog. How would the VL53L8 module perform under these conditions? Are there any specific settings or considerations to ensure reliable measurements? Thank you for your assistance.

Hello,We are using the VL6180X in a IVD product and need laser test certificate documents to show the range sensor is class 1 and safe for the user. Can you send me a test reports for this part? I see a CDRH report posted for VL53L1, but couldn't find it for the VL6180.Thanks,Andrew

Hii ,Does VL53L8 tof sensor support ROI selection or Reduced FoV as VL53L1 , if yes how do i do it ?Thanks,Poornima B

I'm using the example project provided for the VL53L5CX and it works fine with the default 4x4. The `vl53l5cx_init` method within the vl53l5cx_api.c is where I believed it should be configured in this section where I passed in VL53L5CX_RESOLUTION_8X8 to both send_offset_data and send_xtalk_data : I also noted this post which said the buffer should be increased, which did not work. I wanted to know if anyone could supply an example of using the 8x8 resolution. The image below is the current output.   

Hi I am developing a commercial footfall counter based on the VL53L7CX and ESP32.The API is (Version : VL53L7CX_1.2.10)I have produced a mockup using the VL53L7CX breakout board.IOVCC is 3.3 voltsI am using the on board regulator for AVDD powered from 5 volts.I2C is 1 MHz.I am using the 4 x 4 resolution.I am only using the Results.distance_mm the rest of the Structure and I2C communication is disabled in the platform.hI have developed a PC app to capture the ranges and visualize the range data.With the sensor facing a blank wall 3000 mm away I am getting a mixture of ranges in the 16 zones with almost 2000mm difference on adjacent zones.I have also found some zones just do not update their range unless you wave your hand in front of the sensor.  This is not a data issue I am receiving the data it just does not change.The worse problem I have is the range on some zones is intermittently fluctuating by more than 400mm between samples.I have tried VL53L7CX_RANGING_MODE_AUTO

Hey,I have a custom made board/device which is using 4x VL53L4CD Tof Sensors to measure the distance. I have trouble to calibrate the sensors correctly or get correct values from them from time to time. Sometimes it works well - sometimes it does not.What I can see is, that for sensor where the distance is not accurate I am receiving the result status " Signal is below the defined threshold", as described in the datasheet.What exactly does that mean and how can I fix that? What is causing this issue?The signal threashold is set to 5000 and the sigma is set to be 10.I noticed when I am running the offset and xtalk calibration - this issue can disappear but it takes multiple calibration iterrations and sometimes it does not fix the problem. And as well: what exactly is a 17% reflective material!? (as mentioned in the datasheet to calibrate offset and xtalk)

I've been trying to get my VL53L3CX to communicate with my ESP32-S3. I'm using esp-idf and ported https://github.com/stm32duino/VL53L3CX by rewriting the I2C and GPIO code for esp-idf. As far as I can tell, I'm successfully communicating with the VL53L3CX. I used the following code to confirm that I2C communication is working properly:    int VL53LX::rd_write_verification(VL53LX_Dev_t *dev, uint16_t addr, uint32_t expected_value) { VL53LX_Error Status = VL53LX_ERROR_NONE; uint8_t bytes[4], mbytes[4]; uint16_t words[2]; uint32_t dword; int i; VL53LX_ReadMulti(dev, addr, mbytes, 4); for (i = 0; i < 4; i++) { VL53LX_RdByte(dev, addr + i, &bytes[i]); } for (i = 0; i < 2; i++) { VL53LX_RdWord(dev, addr + i * 2, &words[i]); } Status = VL53LX_RdDWord(dev, addr, &dword); printf("expected = %8x,\n", expected_value); printf("read_multi = %2x, %2x, %2x, %2x\n", mbytes[0], mbytes[1], mbytes[2], mbytes[3]); printf("read_bytes = %2x, %2x,

Hello,We received an EOL status notification for our current sensor VL6180 and I found the VL53L4CD as a substitute for this TOF proximity sensor. We would like to know how long this device will be active, as the VL6180 is now on EOL.Can you also connect us to one of your Field app engineers to discuss further the differences in application between the VL6180V1NR/1 and VL53L4CD? Thank You. Regards,Jerald

I am looking for the shortest library for the vl53lox. I am using the b-l475e-iot01a1 board and i just need some measures on the vl53lox.I look on github but there are just a lot of files so I would like to know if  a less heavy approach exist . Furthermore , I work on cube mx and cube ide. 

Hi Team, I have P-Nucleo-53L8A1 EVK. This board is connected to PC via micro USB cable. LD1 and LD3 LED's are ON and are red in color. I am trying to use VL53L8CX GUI , but its showing at About window as attached.     'Update ST-Link '  process tried. LD1 was blinking with Red when this process was happening. But, even after that same window getting.  How to resolve it???   Regards, Deep_Bang