@ajb2k3 I think thats not true. There is no ino files or basically anything what refers that it is done with arduino ide. And by my understanding it is not even compatible with any level witth it.

I have try compile this firmware with small changes.
https://github.com/m5stack/M5-PbHUB-Internal-FW
With keil studio. I must say that I have nothing good to say about keil and it is quite blast from the 90'. Is there any opensource or cli option to compile that firmware?

Hi,
There is something seriously wrong in Atom S3 Lite documentation and examples. Intern as product owner?
There just short list of problems:
At https://docs.m5stack.com/en/core/AtomS3 Lite

• Schema is missing. Only pinout is shown under topic "Schematic. (same problem in S3 page)
• Link to arduino example is dead
• Video is Russian at English page (may explain why so many thing is messed up if russians was involved to this product).

At library

• ButtonA wont work
• G41 is not defined

This is just things where I hit in one day use.

It would be nice to get K-type thermo couple unit module.

I like to wish thermo couple receiver module. That allow use these devices with higher temperature applications and liquids.

Have someone else burn their M5 core with using GoPlus2? It looks that if GoPlus2 have DC connected same time than M5Core is connected to USB it will burn IP5036 from M5 core