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    flatline69

    @flatline69

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    Posts made by flatline69

    • Updated: M5StickC + 18650C HAT: Heat & LCD corruption

      Hello Everyone,

      I just acquired one of these nifty units (AliExpress) however I've run into an issue I don't seem to be able to resolve. I tried emailing support but have not heard back so I joined and figured perhaps the community can help me.

      I have the M5StickC (blue 5V sticker on the base where the pins are; I don't know which version this is) and the 18650C HAT (v1.3 is shown in the battery compartment) and while I had to charge up my M5StickC (Error 22) I was able to flash OpenMQTTGateway on it without issue and it works perfectly fine.

      My issue is when I connect the M5StickC to the 18650C HAT (and put 2 machine screws into the base to hold it in place) and put a battery in (I have lots of 18650C batteries) two things happen:

      1. The M5StickC starts to get REALLY warm, I mean noticeably warm and you can smell "burning electronics" -- sort of a coppery smell.
      2. The screen on the M5StickC starts to show this black "creeping" circle that slowly starts expanding across the LCD display

      Of course I don't let this sit this way and disconnect everything. When I connect the M5StickC with the supplied USB-C cable from my laptop, everything works fine. No heat, no creeping black on the LCD.

      I don't know what I'm doing wrong here. I'm beginning to believe that either I have mismatched units or there's a defect but since I just got this, I'm not sure where to start troubleshooting. Am I running old firmware on the M5StickC perhaps? I really don't know where to begin.

      Can anyone provide any advice?

      Thanks!

      EDIT: I did some more testing and came to the following conclusions:

      • Any 18650C battery including the blue one it's shipped with produces same results
      • Leaving the battery out and connecting through the base USB-C port, the unit powers up and works as expected.
      • I tested with and without the machine screws installed, made no difference in results (I read a post here where someone said the screws interfered with the M5 button)

      Pictures I took:
      https://imgur.com/a/fG94ls6

      posted in General
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      flatline69