VL53L1X gives inaccurate distance measurements with nrf52833

[Shashikant]

I am currently working with the VL53L1X Time-of-Flight (ToF) distance sensor and am experiencing inaccurate and inconsistent distance measurements.

The sensor is able to detect objects and provide distance readings, but the measured distance does not consistently match the actual physical distance. I have observed variations/errors in the distance readings even when the target position remains unchanged.

Could you please help me identify the possible cause of this issue and suggest the recommended configuration or calibration procedure?

I would appreciate your guidance regarding the following points:

* Recommended initialization and configuration settings for the VL53L1X.
* Recommended timing budget and ranging frequency settings.
* Calibration procedure for accurate distance measurement.
* Recommended offset and crosstalk calibration procedure.
* Effect of target reflectance, ambient light, and target size on measurement accuracy.
* Recommended sensor mounting and target conditions for reliable measurements.
* Any specific API settings or parameters that should be configured for improved accuracy.
* Recommended firmware/API version for the VL53L1X.

If required, I can provide the sensor configuration, firmware code, measurement logs, and hardware details for further analysis.

Please let me know if you need any additional information to investigate this issue.
 

[Bin]

Hi:

From your description, my understanding is that this issue may require calibration.

As a first step, I would recommend using the GUI to perform a quick calibration and verify whether the measurement accuracy improves. This is usually the fastest way to check if the issue is mainly related to sensor calibration rather than the basic hardware or communication.

If the results improve after calibration, then the root cause is likely related to offset and/or crosstalk conditions in your setup.

 

A guide to using the VL53L1X ultra lite driver - User manual, the link is user manual that descripted the detailed API.

STSW-IMG008 | Product - STMicroelectronics the link you can download GUI and find GUI guide for reference. 

Best Regards,

Bin FAN