@felmue

OKAY! Excellent. THANK YOU. Didn't understand the USB-C port on the charging base.

Figured this all out with your help and appears to need to be fed the power from the included "dumb" USB-A to USB-C cable and not what I thought I could do from an Apple USB-C / USB-C plugged into my MacBook.

Problem solved!

Thank you again!

Hello Oscar...

For connect M5stack to Shelly BLU:

2cd939a7-3d8e-43fb-924e-7fb51cdbfda4-image.png

And you can see an example in: https://community.m5stack.com/topic/6737/receiving-response-from-ble-server

I hope it can be of use to you.

Best regards.