Imaging (sensors)

Hi,We are currently in a project where we want to use the VL53L0X chip for ranging. And the example code with PC application seems to work quite good. the next step is to create a PoC using our own system (where we are now).I am currently reading up on the sensor guidelines, API documentation and code examples and can't really explain the return values of the 'VL53L0X_GetRangingMeasurementData' function. According to the documentation it returns the following:RangeMilliMeterRangeDMaxMilliMeter:SignalRateRtnMegaCpsAmbientRateRtnMegaCpsEffectiveSpadRtnCountRangeStatus:I can explain the 'RangeMilliMeter', 'RangeDMaxMilliMeter' and 'RangeStatus' variables but the other ones i dont fully understand.The code example says the following: SignalRateRtnMegaCps:                        /*!< Return signal rate (MCPS)\n these is a 16.16 fix point      &n

Hi,in my next application I plan to use VL53L1X. What I also need, independent from the object detection, is the amount of ambient light. Would it be possible to read that value from VL53L1X using it's full API? Is that value at all available in one of it's I2C registers?Thanks for any support provided.

Hi! Is there release date for the new VD55H1 sensor? Does it come with a development set?Best,Wayne

Hello,I was unsure if the VL53L7CX would be able to detect glass walls. Often ToF sensors are unable to as light passes through the glass, but was curious that the non-zero reflectance of glass (usually <10% but still nonzero) allows VL53L7CX to detect glass walls successfully.Thanks in advance!

Hi:When I move the object detected by the VL53L4CX, I find that there is a one cycle delay in the distance it returns. Is this because its first data is discarded?(Range status=6)？ Is there a way to improve this?Thankyou.Cyt 

Hey, I want to see the 8x8 matrix in the VL53L8CX_GUI but when I try to connect it in the GUI the nucleo does not appear. But it appears by flash. In the device managment from my windows 11 I see the board is on COM8. (See screenshot)Do you guys have an idea? 

Hi,I use to 12 ToF(Vl53l1x) sensor on the robot for security range detect. And at the some situations, this sensors stop ranging data. I detect last regular data and then reset sensor. when starting sensor can do bootstate function. But can not do sensor_init func which stuck on the data_ready func. Do you know why did it this situation?

Hello I want to measure the distance of water in a cylindrical container to the lid of the cylindrical container. I need to find the height of the water by subtracting the measured distance from the height of the cylindrical container. Since there is no pure water in the pipe, we cannot use an ultrasonic sensor. However, the chemicals in the water are not flammable or explosive. What I want to ask is, is there a distance sensor you can recommend to measure water distance? pipe height 400 cm.pipe diameter 100 cm.

Hello,I can't find the measurement accuracy of the 2 sensors mentioned above in your documentation. Could you please provide me with this information?Thank you.Regards, 

I've seen references to various A and B or (even and odd) messages for the ToF sensors.In my application, it turns out that every other measurement is not great, so if I throw out packets based on their message ID count, then I get perfect data but at half measurement rates.  The effect I see is that the measurements oscillate between the real value and a nearby (within 6 or 10cm) value.I think for my sensor, the packet that contains the ambient data is the better one.Is there more documentation on what the two packets are and why the measurements would be different between the two?  Is there a way to set them both to operate the same so that I don't lose half the samples?

Hello,I plan to use VL53L5CX to measure the distance between the robot and the user (human) in the walker project. I would like to ask if it is safe or not. Regards,Fehmi.

Hello all,does the vl53l5cx ULD API (STSW-IMG023) can expose  a unique device ID for the VL53L5CX ? Something similar to the VL51L1 API function call "VL53L1_Error VL53L1_GetUID(VL53L1_DEV Dev, uint64_t *pUid)"  in the driver SWSW-IMG019 ? Kind regards

Hi all,I'am wondernig about the max XTalk level in kcps which various FlightSense products can compensate. I found only for the new VL53L8CX Sensor a  xtalk compensation limit of 300 kcps - mentioned in application note  AN5939 in section 7 : Guidelines for the cover glass of the VL53L8 Time-of-Flight (ToF) multizone sensor family - Application note (st.com).What about the max xtalk compensation limits for the products VL53L1X/CB and VL53L5CX  ?Thanks in advance.

Hello to all, I create a new project using STM32CubeMX for the b-u585i-iot02a board. Then I added to the project the software and the library for the gesture recognition STSW-IMG035, specific to M33 processor. Compiling, I have this error:Description Resource Path Location TypeC:\Users\USER\Contenitore\b-u585_VL53L5_Gesture\STSW-IMG035_M33\libGesturesMZ.a(gwmz.o): in function `setPolarLevelController': b-u585_VL53L5_Gesture C/C++ Problemmake: *** [makefile:68: b-u585_VL53L5_Gesture.elf] Error 1 b-u585_VL53L5_Gesture C/C++ Problemundefined reference to `taylor_atan' b-u585_VL53L5_Gesture line 0, external location: c:\st\stm32cubeide_1.8.0\stm32cubeide\plugins\com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.9-2020-q2-update.win32_2.0.0.202105311346\tools\arm-none-eabi\bin\ld.exe: gwmz.c C/C++ Problemundefined reference to `taylor_sqrt' b-u585_VL53L5_Gesture line 0 C/C++ Problem It seem to me that taylor_atan and taylor_sqrt, called from setPolarLevelControl

I am using cover glass window IR080C0-IC09-A066-2. I want the design to be IP69. Where I can get the information that the cover glass can withstand If it is subjected to high water pressure (10000 kPa) and high temperature(80*C)?

Hello everyone,i bought the X-Nucleo-6283A1 development Board from ST together with an Nucleo-F401RE Developmentboard.I have also installed the GUI and it works ok, the calculation of CCT is not performing correct, but thats ok so far...Now i wanted to perform the whole operation by myself on an Arduino UNO.Like other members already mentioned, the datasheet is not very good, i set everything up and i am able to read out Device ID, Silicon rev, ...but no matter what i do, i cant read out the ALS Channels.The datasheet mentions a "driver API" but there is no possibility to download anything.Can someone tell me where to get more Informationen about this topic, or has done the same on a different Controller not provided by ST?Otherwise my company will not use this sensor for their product.Kind regardsSebastian Burchert

I ended up accidentally discovering that the VL53LX API is compatible with two different sensors.I'm using this platform implementation for Linuxhttps://github.com/ned14/VL53L3CX_rasppiI have the VL53L3CX but also the VL53L4CD.  I've seen that the VL53L4CD doesn't have a "full complexity" driver available in the downloads.  Is the VL53LX API compatible with ALL VL53L**** sensors?  Is there anything I should worry about because the VL53L4CD doesn't have an API other than the ULD or the ULP?

I saw somewhere in the forum that the TOF sensors see [optical] pings from other sensors as ambient light (meaning they are able to ignore them) but are still able to detect their own bounce. Is that true? If yes, can someone explain how that works?Note, I'm referring to the situation where you have independent devices in an area moving around, each of which have their own TOF sensor(s) for obstacle avoidance. The point here is that there is no synchronization between each device, so there would surely be overlapping [optical] pings.(I accidentally posted this to the wrong forum group, so this is a re-post of the same question) 

Hi, I am struggling to understand how to calculate the load capacitance when adding the pull-up resistors in my circuit with VL53L4CD ToF sensor to run the sensor in fast mode plus. The datasheet states that:Suggested pull-up and series resistors for I²C fast mode plusI²C load capacitance (CL)(1) Pull up resistor (Ohms) Series resistor (Ohms)CL ≤ 90 pF 1.5 k 10090 pF < CL ≤ 140 pF 1 k 50140 pF < CL ≤ 270 pF 0.5 k 50270 pF < CL ≤ 400 pF 0.3 k 501. For each bus line, CL is measured in application PCB by customer.VL53L4CDI am using a NUCLEO-F401RE evaluation board that is communicating and driving the ToF VL53L4CD-SATEL board. Anybody can help with this? Thanks in advance.

Hello everyone,I am trying to read data from three SATEL-VL53L7CX, using only their mini-PCB part, with a Nucleo F401RE.To do so, I did the following wiring:each sensor is using a different I2C bus (sensor 1 is plugged on SDA1/SCL1, sensor 2 on SDA2/SCL2, etc)the GND of each sensor is connected to the Nucleo’s massIOVDD and AVDD are respectively connected to 3.3V and 5Vthe LPn pins are connected to 3 different GPIO pins (D2, D4, D6)I am using Arduino IDE to develop the code. Here it is:/************************** INCLUDES **************************/ #include <Arduino.h> #include <Wire.h> #include <vl53l7cx_class.h> #include <stdio.h> #define DEV_I2C Wire #define SerialPort Serial #define LED_PIN PC13 #define TOF 3 // number of ToF #define LPN_PIN1 3 // sensor #1 wiring #define LPN_PIN2 5 // sensor #2 wiring #define LPN_PIN3 7 // sensor #3 wiring /************************** PARAMETERS **************************/ // Components. VL53L7CX sensor1(&DEV_I2

As it is described both models are dedicated for  AI applications. Where can I find examples of usage or materials to start?I assume I can use NEAI Studio?

Hi, I was wondering what is the SR03 settings in initialization of VL6180X ToF sensor? I had gone through the user manual & application note AN4545 but i couldn't get the answer. If someone knows please explain. It just for educational purpose only.Thanks in Advance,AK.

Vl53l3CX works well when i init it with DataInit and StartMeasurement Function,but when i add a OffsetCalibration to its init sequence,it output a distance of 8191 mm,which is obviously wrong .Paraments of calabration function are shown in the  following picture,is there anything wrong.any advice will be appreciated.

I purchased X-NUCLEO-53L5A1 and NUCLEO-F401RE board. I assembled them and followed the Quick start guide X-NUCLEO-53L5A1 manual. I can't connect the device in the VL53L5CX. I update firmware and ST-Link before. I connected to the ST COM port via terminal. Report you can find in the attachment.Why does this happen? Thank you in advance.Jan

Dear Sir,     I am trying to read the distance from the VL53Lox i can read upto 400mm , when i try to measure more the 400mm it is not reading proper reading. Please guide