M5Stack Community
    • Categories
    • Recent
    • Tags
    • Popular
    • Users
    • Groups
    • Search
    • Register
    • Login

    GoPlus2 Module and M5Stack Fire - how to charge ?

    Modules
    2
    5
    5.8k
    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.
    • R
      ramaker
      last edited by

      I have an vehicle, that should be controlled via a M5Stack Fire.
      For the 2 DC motors and the servos I want to use a GoPlus2 module with it's built-in Akku. (I had one in my collection :-) )
      It's working, but I found the system in instable because of power supply.

      I use a 7.4 V LIPO akku - connected to the GoPlus2 module - DC input. (If I use power from USB the motors are not propper working - they are 6V DC motors.)

      I'm not sure if the akku of the GoPlus2 modul is loaded from that input. The green LED is on, but if I disconnect the LIPO akku the LED remains only about 5s on - then off and the connected M5Stack Fire is off.

      What does the green LED indicates ?
      Power or charging ?

      K.D.

      1 Reply Last reply Reply Quote 1
      • felmueF
        felmue
        last edited by

        Hello @ramaker

        from looking at the GoPlus2 schematics the green LED is on either when external power is applied (DC input) or a charged battery is attached.

        There is no charging IC in the GoPlus2 so the battery is going to be charged through the charging IC in the M5Stack Fire. When power is supplied through DC input only (and USB-C is not connected) 5 volts are supplied into M5Stack Fire, but the charging IC in the M5Stack Fire can only be powered by USB-C (and not from external 5 volts). Therefore with external DC input power the battery will not be charged. This also fits the GoPlus2 description which says that the battery can be charged through USB-C.

        Thanks
        Felix

        GPIO translation table M5Stack / M5Core2
        Information about various M5Stack products.
        Code examples

        1 Reply Last reply Reply Quote 1
        • R
          ramaker
          last edited by

          Thank you for the answer.
          That is strange ! So I have to use 2 power supplies , if I want to drive 2 DC 12V motors.
          This makes no sense for me.

          regards
          K.D.

          1 Reply Last reply Reply Quote 0
          • felmueF
            felmue
            last edited by

            Hello @ramaker

            it is my understanding that you can power everything from the GoPlus2 DC input except charging the GoPlus2 internal battery.

            That said, I don't have a GoPlus2, so my conclusions might be incorrect. (Sorry I forgot to mention that before.)

            Thanks
            Felix

            GPIO translation table M5Stack / M5Core2
            Information about various M5Stack products.
            Code examples

            1 Reply Last reply Reply Quote 1
            • R
              ramaker
              last edited by

              Hello felmue,
              it's no problem - i've ordered one and will have it by the end of the week.
              I looked to the scematics too ( - a little, I'm no specialist) and I found what you said.
              And I found more things that make me problems.
              I think the voltage from the external input is converted to 5V DC like the USB power.
              So I cannot use my DC12V motors unfortunately - I have to change to 5V types.

              (Now I unterstand, why they are rotating with so less power and slow.)

              Thank you and regards
              K.D

              1 Reply Last reply Reply Quote 0
              • First post
                Last post