@lukasmaximus said in PCB Reference Designators Documentation:
https://github.com/m5stack/M5-3D_and_PCB/blob/master/M5_Core_SCH(20171206).pdf
Thanks @lukasmaximus. I have the schematic. I was hoping for a document that showed an image of the PCB with the part designators so that I could find where, for example, R5 is on the board.