SD Card problem



  • Hello all,

    I have a strange Problem with SD Cards. Almost every time, when there is a power outage, SD cart becomes completly corrupted (dead). After I need to replace the SD card, I load the new image on it and then I send the existing program to new card. Then it works normal until next power outage.

    I am using UniPi Neuron L203 with Mervis OS image 2.2.0 installed.

    Does anyone had the same problem? Does anyone have an Idea why this happens? Is the procedure after I changed the SD card correct? Or should i use commision mode?

    Thank you very much in advance.

    Best regards,
    Johann


  • administrators

    Hello @johni2212

    what SD cards are you using? The commonly available SD cards uses MLC technology which is good enough for phones/cameras, but not recommended for automation. We recommend using SLC cards such as https://www.unipi.technology/2gb-industrial-microsd-card-slc-p232?categoryId=33 which are much more reliable and handles the unexpected power outage much better.



  • I am using normal SD Cards, SandDisk and Kingston ....

    I already ordered two pieces of the recommended cards.

    Thank you for your advice.


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