Does the 12mA max draw also apply to the 5V Wemos pin?
If it does not, what is the max rating for this pin?
At the top left of the schematic I found the +5V labeled as "9".
Right below it I see "+5V" labeled as going to the "RT9013" voltage regulator. I looked up the datasheet and found it HERE.On Page 3 of that datasheet it states a Current Limit MAX as .85 amps (850 mA). Is this technically the highest current that should be pushed or provided through this pin?
I also see another pin labeled "9" towards the bottom center of the wemos datasheet. This pin says it is connected to "CP2104" USB to UART bridge through a "4K7" resistor and goes to 3.3V.
Does this pin 9 have anything at all to do with the previously mentioned "9" that's associated with the 5.V pin?
Also, I'm assuming 4K7 is a mistake on that resistor label and it should be 47K?
That's the 3.3 V regulator. The ESP8266 runs at 3.3 V. The current limit is the maximum available to the ESP8266 and the 3.3V pin. It has no relevance to the 5V pin other than being supplied by that pin or the USB jack.
No, that's the correct notation for resistors, not a typo. It means 4.7 kOhm. It's written that way to be more clear than 4.7k, which could be misread as 47k.