🤖Have you ever tried Chat.M5Stack.com before asking??😎
    M5Stack Community
    • Categories
    • Recent
    • Tags
    • Popular
    • Users
    • Groups
    • Search
    • Register
    • Login

    M5DIN PowerOff when Vin is powered

    Scheduled Pinned Locked Moved Units
    1 Posts 1 Posters 990 Views
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • L Offline
      leutholl
      last edited by

      Hi.
      I begin to love the M5DIN but I think there is a hardware issue either by design or my unit is faulty. Running the factory test program on a battery runs fine for manual power off and RTC based wake up. When off, the red LED is off. As soon as I power it on Vin 12V (green connector) I can't power off the unit anymore. The led does in a dimmed state and from that moment I can't power on or off completely. This happens with and without the battery connected. It seems that the train of FETs are not switched off completely when powered by Vin - probably the charger is trying to supply the unit (and battery). I see the effect of the HOLD pin in my firmware going LOW when the LED goes from full brightness to low brightness but again, never a clean off state. I expected that then Vin is on, the unit powers on (which it does, and it's fine) but I can still go sleeping. With that issue here, once I'm in this semi-sleep (semi bright led) adding Vin back will not power it on so my program is out of control.
      Is my understanding correct that this is a side effect in the design or is it just my unit that is faulty?
      Does your unit switch off completely (led off) when on Vin?

      PS: I also think the schematic needs to be updates as I see confusing signal labels and it's not completely drawn

      Many thanks.

      1 Reply Last reply Reply Quote 0

      Hello! It looks like you're interested in this conversation, but you don't have an account yet.

      Getting fed up of having to scroll through the same posts each visit? When you register for an account, you'll always come back to exactly where you were before, and choose to be notified of new replies (either via email, or push notification). You'll also be able to save bookmarks and upvote posts to show your appreciation to other community members.

      With your input, this post could be even better 💗

      Register Login
      • First post
        Last post