ESP8266 Notes

PIN OUTSLABELCOLORCONNECT #1CONNECT #2
NODEMCU
3V3Red/BrownALL
GNDNEGBlackALL
SENSORS
D1SCLYellowI2C M/PLEXTo Sensors
D2SDABlueI2C M/PLEXTo Sensors
SD CARD
CLKCLK (SCK) 14Pink/WhiteD5 HSPI/SCK
D0SD0 (MISO) 10Cyan/GreenD6 HSPI/MISO
D1SD1 (MISI) 13Orange/BlueD7 HSPI/MISI
CSCMD (SS) 11Purple/YellowD8 HSPI/CS
Image Credit: https://www.mischianti.org/…/nodemcu-v2-and-v2-1-high-resolution-pinout-and-specs/

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