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  3. m500 Failed take-off: CPU load too high 100%

m500 Failed take-off: CPU load too high 100%

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  • yu zhangY Offline
    yu zhangY Offline
    yu zhang
    Regular
    wrote on last edited by
    #1

    Hi team,

    I am trying to test the drone take-off the first time, but I got the CPU load too high 100% error after flying 5-8s, then it automatically landed. It's about 20-30 cm high above the take-off spot, so it doesn't hurt the drone.

    Screen Shot 2022-01-17 at 3.23.21 PM.png

    I am wondering why it happened? It's the first take-off with propellers, and the battery remains at 35-38% before flying, but it drops to about 15-18% after 5-8s.

    I am not sure if the battery spec causes this issue (I could only find these with a similar capacity to the recommended one in Australia).

    WechatIMG788.jpeg

    So, any suggestions about it? And any parameters I should check if it would happen again? Thanks.

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    • yu zhangY Offline
      yu zhangY Offline
      yu zhang
      Regular
      wrote on last edited by
      #2

      The firmware is v1.11.3. I am not sure if I should need to update to the latest one.

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      • Chad SweetC Offline
        Chad SweetC Offline
        Chad Sweet
        ModalAI Team
        wrote on last edited by
        #3

        You should not change the firmware from what was shipped. It was all tested and working

        It looks most likely you need to charge your batteries.

        I have not seen that error, but trying to fly with low battery is not safe

        yu zhangY 1 Reply Last reply
        1
        • Chad SweetC Offline
          Chad SweetC Offline
          Chad Sweet
          ModalAI Team
          wrote on last edited by
          #4

          Please:

          1. charge the battery
          2. collect PX4 logs and retrieve from the SD card
          3. post logs here: https://logs.px4.io/ and we can take a look
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          • ? Offline
            ? Offline
            A Former User
            wrote on last edited by [[global:former-user]]
            #5

            Battery setup information is here: https://docs.modalai.com/fc-configure-misc/#11-battery-configuration

            Ensure this is properly set and batteries are charged 🙂

            You can also pull logs directly from QGC to make it easier.

            I haven't seen this CPU error before. Update the parameters, try again, and share the log if it comes up.

            yu zhangY 1 Reply Last reply
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            • Chad SweetC Chad Sweet

              You should not change the firmware from what was shipped. It was all tested and working

              It looks most likely you need to charge your batteries.

              I have not seen that error, but trying to fly with low battery is not safe

              yu zhangY Offline
              yu zhangY Offline
              yu zhang
              Regular
              wrote on last edited by
              #6
              This post is deleted!
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              • ? A Former User

                Battery setup information is here: https://docs.modalai.com/fc-configure-misc/#11-battery-configuration

                Ensure this is properly set and batteries are charged 🙂

                You can also pull logs directly from QGC to make it easier.

                I haven't seen this CPU error before. Update the parameters, try again, and share the log if it comes up.

                yu zhangY Offline
                yu zhangY Offline
                yu zhang
                Regular
                wrote on last edited by
                #7

                @RichieRich ,
                I may find an issue with one of the batteries (the blue one in the above pic). I was trying to charge it with 4S 14.8v, 3.3A settings, but the charger tells that the blue one is recognized as only 3S and breaks the charging every time. It's quite weird why the charger tests the battery as a 3S setting. The green one works well, and no CPU error happened after fully charging.

                So, I think I may have to contact the battery provider to double-check the quality of the blue one. Since the blue one cannot charge at the time, I may not be able to test this error with logs. I will get back if the battery provider could advise me how to charge it.

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