@Hristak Is it charged?
Have you checked that you are using a working data cable and not a charge cable?
Did you erase firmware before burning new?
Did you select the correct firmware version?
What computer are you using?
What OS are you using?

@Bzh2ant2 Did you erase first?
Did you hold the boot mode button before erasing and burning firmware?

@jorge5a There isn't an API key, UIFlow2 works different in that you need to register the device on your account and it will be available in UIFlow2's device selector.

@kuriko No, do not touch the patch file.

@colythdev I recommend you read about arduino programming and then read on the specifics of ESP32 programming.

There are no "short cuts" you will need to learn the basics before moving onto programming M5Stack hardware.

@aitech doesn’t work but I have replaced the second boot screen, yes there are 2 boot screens. The primary boot screen is controlled by the DTB file and need recompiling, the second is in another location.
The guide will be in my CoreMP135 Update document closer to Christmas from the FB groupe

Hello @BertM

I get the same error using platform 6.4.0 which supports Arduino 2.0.11.
You can see the used platform / Arduino version in your log:

PLATFORM: Espressif 32 (6.4.0) > M5Stack StampS3
framework-arduinoespressif32 @ 3.20011.230801 (2.0.11)

Try modifying the platform parameter to:

platform = espressif32@6.9.0 ;  6.9.0 - 2.0.17

This should download platform version 6.9.0 with Arduino version 2.0.17 and with that the error is gone for me.

Thanks
Felix

@Remco Does L1, L2 work instead of LED0, LED1?
I'm sure that LED0 and LED1 are already in use by Micropython which is what UIFlow is built on.

@tdahbura You cant use it on port B because the port has one hardware fixed output pin and one hardware fixed input pin.
Port C is attached to dedicated UART pins.
For port B you need the PortB version of the sensor or use a the PaHub .

Hello @laursena

unfortunately I don't know the answer to your question about the power consumption and if M5Core2 can handle it.

However what I can tell you is that you do not necessarily need the PaHubs. The M5Stack I2C weight measurement units allow for the I2C address to be modified - so you could give each unit its own I2C address and simply connect them in parallel.

Thanks
Felix