M5Stack Port A symbols Explained
Saw something like this recently on social media, thought I would expand on that post just a little bit.

Image of my M5Stack Gray core, NOTE: I have added the text to explain the symbols.
SCL SDA 5V GND
Or to put it another way
GPIO22 GPIO21 5V GND
So really its simply a GROVE 12C Connector

Although NOTE: Pin 3 in this case is 5V

So get yourself a lead with a GROVE female plug on both ends or a GROVE female plug on one end and single male/female jumper wire plugs on the other.
Super handy connector for all sorts of sensors etc, easy to code, study, even the blind tech guy can’t plug them in wrong,
Cheer’s Al