You’re absolutely right about “setupADJD();” not being declared or defined in the setup loop.

It has been over a year since I worked on this project, and unfortunately I do not have the color sensor in front of me.

Just looking at the code, I wonder if a line comment may have been lost in posting it to the web for the “setupADJD();” line…

Stumbled upon sensorpedia search for an answer to my problems with the code you borrowed from Arduino user Marcus to output R,G,B tuples:

Basically just like his example code your doesn’t compile…

In function ‘void setup()’:
error: ’setupADJD’ was not declared in this scope In function ‘void loop()’:
In function ‘int getClearGain()’:
In function ‘int getColorGain()’:

is what the compiler gives back as an error. Were you able to use this code verbatim for this project???