I2C Qwiic Connector

 LED HOOKUP I2C OUTPUT

 
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Created with GIMP I2C Signals I2CSCL sm Created with GIMP
Created with GIMP I2C Signals 5V sm
J2
JST Connector
PINS		  J3
Connector
Labels 
 1 - GND     GND
 2 - I2CVCC  VCC
 3 - I2CSDA  SDA
 4 - I2CSCL  SCL
NOTE: It would be better if J3 had the same labels as J2.
All these signals are at the voltage levels of the the 
external device, which can differ from the Arduino 5V.
I2C Signals SCL sm
 Arduino Pin  I2C Signal
 A4  SDA
 A5  SCL
I2C Signals SDA sm  

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Schematic I2C Parts

 

 

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