<![CDATA[[Documentation] AtomS3 Schematics]]>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)
]]>https://community.m5stack.com/topic/6204/documentation-atoms3-schematicsRSS for NodeWed, 29 Apr 2026 02:46:54 GMTWed, 13 Mar 2024 17:39:05 GMT60<![CDATA[Reply to [Documentation] AtomS3 Schematics on Fri, 24 Jan 2025 18:27:23 GMT]]>@Glintor @Ifantus

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

Thanks M5Stack!

]]>https://community.m5stack.com/post/28026https://community.m5stack.com/post/28026Fri, 24 Jan 2025 18:27:23 GMT<![CDATA[Reply to [Documentation] AtomS3 Schematics on Tue, 21 Jan 2025 21:55:06 GMT]]>Did you post these yet?

]]>https://community.m5stack.com/post/27978https://community.m5stack.com/post/27978Tue, 21 Jan 2025 21:55:06 GMT<![CDATA[Reply to [Documentation] AtomS3 Schematics on Sat, 27 Apr 2024 05:25:27 GMT]]>@ifantus Yeh, I'm the Mod of the communities.
They do visit the forums but they have been busy with travel.

]]>https://community.m5stack.com/post/24956https://community.m5stack.com/post/24956Sat, 27 Apr 2024 05:25:27 GMT<![CDATA[Reply to [Documentation] AtomS3 Schematics on Fri, 26 Apr 2024 15:44:38 GMT]]>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?

]]>https://community.m5stack.com/post/24951https://community.m5stack.com/post/24951Fri, 26 Apr 2024 15:44:38 GMT<![CDATA[Reply to [Documentation] AtomS3 Schematics on Tue, 23 Apr 2024 04:45:10 GMT]]>@saiyande I would hazard a guess that its because the same PCBis used for the AtomS3 and the AtomS3lite version.

]]>https://community.m5stack.com/post/24911https://community.m5stack.com/post/24911Tue, 23 Apr 2024 04:45:10 GMT<![CDATA[Reply to [Documentation] AtomS3 Schematics on Mon, 22 Apr 2024 21:37:31 GMT]]>@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.

]]>https://community.m5stack.com/post/24907https://community.m5stack.com/post/24907Mon, 22 Apr 2024 21:37:31 GMT<![CDATA[Reply to [Documentation] AtomS3 Schematics on Thu, 14 Mar 2024 22:52:57 GMT]]>@saiyande I have one, they are GREAT !
-cheers

]]>https://community.m5stack.com/post/24389https://community.m5stack.com/post/24389Thu, 14 Mar 2024 22:52:57 GMT<![CDATA[Reply to [Documentation] AtomS3 Schematics on Thu, 14 Mar 2024 22:35:57 GMT]]>@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).

]]>https://community.m5stack.com/post/24388https://community.m5stack.com/post/24388Thu, 14 Mar 2024 22:35:57 GMT<![CDATA[Reply to [Documentation] AtomS3 Schematics on Thu, 14 Mar 2024 21:45:40 GMT]]>@saiyande Are you referering to the AtomS3?
https://docs.m5stack.com/en/core/AtomS3
It does not have an OLED or WS2812!

]]>https://community.m5stack.com/post/24385https://community.m5stack.com/post/24385Thu, 14 Mar 2024 21:45:40 GMT<![CDATA[Reply to [Documentation] AtomS3 Schematics on Fri, 15 Mar 2024 00:43:28 GMT]]>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.

]]>https://community.m5stack.com/post/24381https://community.m5stack.com/post/24381Fri, 15 Mar 2024 00:43:28 GMT<![CDATA[Reply to [Documentation] AtomS3 Schematics on Wed, 13 Mar 2024 18:33:27 GMT]]>@kinonsc You might prefer a Stamps3!

]]>https://community.m5stack.com/post/24353https://community.m5stack.com/post/24353Wed, 13 Mar 2024 18:33:27 GMT