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    [Documentation] AtomS3 Schematics

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    • K
      Kinonsc
      last edited by Kinonsc

      AtomS3 things that would be nice to know...

      • Can the MPU6886 be powered down?
      • Does the SY8089 power everything? (if not, is the EN pin connected to GPIO?)
      • OLED uses GC9107, can it be powered down? (to prevent parasitic current)
      • AtomS3 also has an internal WS2812 LED, is it connected? can it be powered off? (to prevent parasitic current)
      teastainT 1 Reply Last reply Reply Quote 6
      • teastainT
        teastain @Kinonsc
        last edited by

        @kinonsc You might prefer a Stamps3!

        Cheers, Terry!

        100% M5Stack addict with several drawers full of product!

        1 Reply Last reply Reply Quote 0
        • S
          Saiyande
          last edited by Saiyande

          MPU6886 runs at 3.3v, it has a sleep mode at 0x6B (R/W) bit 6 (mask 0x40). 1 for sleep, 0 for awake (not sure if it changes any other "power management" bits, check the manual sections 4.18, 8.38, 8.39, and experiment by checking 0x6B & 0x6C, putting to sleep and rechecking). It pulls only 6 µA while sleeping, though probably still listens on I2C. If your intent was to remove it's address from I2C, according to FCC docs, it looks like it might be the daughter board inside that can be disconnected.

          ESP32-S3 runs at 3.3v, so it's powered by the SY8089, SY8089 pulls 55 µA quiescent.

          OLED can be put into sleep mode, check M5Unified M5.Display.sleep() & M5.Display.wakeup(), backlight can be turned off via GPIO16

          WS2812 uses 5v bus power on the Atom Lite, probably the same on the AtomS3's, 1 mA quiescent, cut the trace if you don't want it.

          teastainT 1 Reply Last reply Reply Quote 0
          • teastainT
            teastain @Saiyande
            last edited by

            @saiyande Are you referering to the AtomS3?
            https://docs.m5stack.com/en/core/AtomS3
            It does not have an OLED or WS2812!

            Cheers, Terry!

            100% M5Stack addict with several drawers full of product!

            S 1 Reply Last reply Reply Quote 0
            • S
              Saiyande @teastain
              last edited by

              @teastain
              Yep, AtomS3.

              I didn't double check if it was OLED, LCD, etc, I just used the term from @Kinonsc

              Hm, yep, M5Stack doesn't mention a WS2812 in store or docs, oddly, their FCC doc lists it... https://fccid.io/2AN3WM5ATOMS3/User-Manual/User-Manual-6228015.pdf
              and it does look like there is one under the (?MPU6886?) daughterboard: https://fccid.io/2AN3WM5ATOMS3/Internal-Photos/Internal-Photos-6228008

              Mine hasn't arrived yet, so I only have docs for reference atm.

              .

              @Kinonsc , It appears a schematic and block diagram exists (listed in FCC docs), just not public (It's up to M5Stack what they choose to make public, cuts down on clones).

              teastainT 1 Reply Last reply Reply Quote 0
              • teastainT
                teastain @Saiyande
                last edited by

                @saiyande I have one, they are GREAT !
                -cheers

                Cheers, Terry!

                100% M5Stack addict with several drawers full of product!

                S 1 Reply Last reply Reply Quote 0
                • S
                  Saiyande @teastain
                  last edited by

                  @saiyande said in [Documentation] AtomS3 Schematics:

                  Hm, yep, M5Stack doesn't mention a WS2812 in store or docs, oddly, their FCC doc lists it... https://fccid.io/2AN3WM5ATOMS3/User-Manual/User-Manual-6228015.pdf
                  and it does look like there is one under the (?MPU6886?) daughterboard: https://fccid.io/2AN3WM5ATOMS3/Internal-Photos/Internal-Photos-6228008

                  Mine hasn't arrived yet, so I only have docs for reference atm.

                  I received and took apart my AtomS3 (to remove the MPU6886), there are pads for a WS2812, but it isn't populated.

                  ajb2k3A 1 Reply Last reply Reply Quote 1
                  • ajb2k3A
                    ajb2k3 @Saiyande
                    last edited by

                    @saiyande I would hazard a guess that its because the same PCBis used for the AtomS3 and the AtomS3lite version.

                    UIFlow, so easy an adult can learn it!
                    If I don't know it, be patient!
                    I've ether not learned it or am too drunk to remember it!
                    Author of the WIP UIFlow Handbook!
                    M5Black, Go, Stick, Core2, and so much more it cant be fit in here!

                    1 Reply Last reply Reply Quote 0
                    • I
                      Ifantus
                      last edited by

                      I was looking for this as well…
                      Any idea if M5Stack still looks at the forums specifically feature suggestions? I don't see anything from them recently. @ajb2k3 , I'm guessing your a mod here?

                      ajb2k3A 1 Reply Last reply Reply Quote 0
                      • ajb2k3A
                        ajb2k3 @Ifantus
                        last edited by

                        @ifantus Yeh, I'm the Mod of the communities.
                        They do visit the forums but they have been busy with travel.

                        UIFlow, so easy an adult can learn it!
                        If I don't know it, be patient!
                        I've ether not learned it or am too drunk to remember it!
                        Author of the WIP UIFlow Handbook!
                        M5Black, Go, Stick, Core2, and so much more it cant be fit in here!

                        1 Reply Last reply Reply Quote 0
                        • G
                          Glintor
                          last edited by

                          Did you post these yet?

                          K 1 Reply Last reply Reply Quote 0
                          • K
                            Kinonsc @Glintor
                            last edited by

                            @Glintor @Ifantus

                            Looks like they posted the schematics now:
                            https://docs.m5stack.com/en/core/AtomS3

                            Thanks M5Stack!

                            1 Reply Last reply Reply Quote 0
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