Yes, I have had this issue as well while trying to develop a smars quad bot.

Hi
do you find a solution ? also interest by this.
Thx

Found the problem. After deleting an old sdfat and installing a new one it was working perfect on my Core2.
Thanks for hiis fine explanation. Was verry helpfull.

Cheers
Jan

@m5stack How can I get bin file from the device?

SOLVED... thanks to https://github.com/arduino/arduino-cli/issues/1002

It was just a "Win10 too long path" issue

There is aM5StickPlus library !! Thanks a lot!

Hello,
Could you please include the imports at the beginning of the code? did you import the proper library?
it seems that it says the SDCard failed, could you run the factory test image on your old core to see if you get any issues?

Hello @flyceo

not sure what's going on on your side as your code runs and works fine here - using PlatformIO as well. I see the text and the yellow square just fine.

What does your platform.ini look like?

Thanks
Felix

Hello @Pat

you are welcome.

BTW: you do not necessarily need to touch the M5Stack lib - M5.begin() actually has parameters, one of them is SerialEnable, if you set this to false you can setup Serial in your code anyway you like.

Thanks
Felix

You should be able to run up to 5 relay units connected to the i/ohub (pbhub).

You can find esp32 wifi sniffer on github, it can display all nearby wifi units.

as I recall there is a size limit when using Preference lib, so suggest you only use that for things like ssid and passwords. You can save your web pages in SPIFFS memory, try look here: https://randomnerdtutorials.com/esp32-vs-code-platformio-spiffs/

Hello @dstaley

Correct, that is what should happen. But yes, when I run your code I can see that the screen gets cleared but no time is shown.

Here is why: the ePaper needs some time to actually do the writing on screen. When the pushCanvas() call returns, the actual writing is still ongoing, but in your case the system is shutdown immediately after and before the ePaper had a chance to finish. Therefore the time is not shown. The trick is to add a delay before the shutdown. I tried with a delay(1000) and now the time shows.

Cheers
Felix