M5Stack is the perfect platform for the professional design of own solutions.
I have received first CORE development kit wit ESP32 and tested Arduino examples.
I have not encountered an unsolvable problem.
However, I would like to ask you to clarify the following:
What does HPWR represent in M-BUS? What is it good for?
I did not find the GROVE I2C connection in the schematic. Since it contains 5V power level, does it mean that both SCL and SDA have a 5V pullup (with level conversion to ESP32)? Or is SDA and SCL connected directly to GPIO21 and GPIO22 without level conversion and need to keep up to 3.3V for GROVE SCL and SDA?
Thanks in advance for your answer.