Random -0.1 value state and never recovers from this state.

[TinManAkshay]

Hi -

I have been working with this library for years now. I use 2 distance sensors on the same i2c bus withy unique i2c addressing.
Sometimes I run into the issue that either of the distance sensors or both gives -0.1 values randomly and they never recover from this state until I reset the power.

FYI: There are other sensors connected on the same i2c bus as well along with these two distance sensors.

What solutions I can try to mitigate this problem? Any suggestions would be highly appreciated.

Thanks,

[rrrRbert360]

I faced similar behaviour when the sensor is measuring infinitive (out of range) distance. My workaround is to power the sensor with a gpio output pin. Every 24hrs i drop the power for 10seconds. That worked for me. Sent from Outlook for Android<https://aka.ms/AAb9ysg>

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________________________________ From: TinManAkshay ***@***.***> Sent: Wednesday, February 8, 2023 6:48:35 PM To: johnbryanmoore/VL53L0X_rasp_python ***@***.***> Cc: Subscribed ***@***.***> Subject: [johnbryanmoore/VL53L0X_rasp_python] Random -0.1 value state and never recovers from this state. (Issue #22) Hi - I have been working with this library for years now. I use 2 distance sensors on the same i2c bus withy unique i2c addressing. Sometimes I run into the issue that either of the distance sensors or both gives -0.1 values randomly and they never recover from this state until I reset the power. FYI: There are other sensors connected on the same i2c bus as well along with these two distance sensors. What solutions I can try to mitigate this problem? Any suggestions would be highly appreciated. Thanks, — Reply to this email directly, view it on GitHub<#22>, or unsubscribe<https://github.com/notifications/unsubscribe-auth/AIMZLJUDHQXRE4FWAXNT6O3WWPL7HANCNFSM6AAAAAAUVR633A>. You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>

[TinManAkshay]

Hi @rrrRbert360 -

Thank you for the response with an insight to the issue. I dug up a little more and found out that after running these sensors for a while, I got -20 (VL53L0X_ERROR_CONTROL_INTERFACE).
As far as I know about this error, we get this error at the time of unsuccessful initialization/unique I2C addressing of the distance sensor.
I believe getting this error while running the sensor for a while could mean possible scenarios.

1. There could be a low voltage on XSHUT pin.
2. Sensor could be loosing its unique address (set via pushing XSHUT to LOW at the beginning of the initialization).
3. I have seen when distance sensor measures finite distance, it sometimes goes to -1 value state.

Thanks,
Akshay