SerialHalfDuplex RGB_master(p9, p10); // this is the color sensor

 // RGB comm rate
     RGB_master.baud(2400);
     RGB_master.format(8,Serial::None,2); 

 // To Read and format as 24 bit RGB in 32 bits
     RGB_master.putc('=');
     RGB_master.putc('m');
     RGB_master.putc('!');
     
     c1=RGB_master.getc(); // R
     if((c1-'A') >= 0) color = c1-'A'; else color = c1-'0';
     color = color << 4;
     c1=RGB_master.getc();
     if((c1-'A') >= 0) color += c1-'A'; else color += c1-'0';
     color = color << 4;
     c1=RGB_master.getc();  // discard since we have 8 bits of color
     
     
     c1=RGB_master.getc(); // G
     if((c1-'A') >= 0) color += c1-'A'; else color += c1-'0';
     color = color << 4;
     c1=RGB_master.getc();
     if((c1-'A') >= 0) color += c1-'A'; else color += c1-'0';
     color = color << 4;
     c1=RGB_master.getc(); // discard since we have 8 bits of color
     
     c1=RGB_master.getc(); // B
     if((c1-'A') >= 0) color += c1-'A'; else color += c1-'0';
     color = color << 4;
     c1=RGB_master.getc();
     if((c1-'A') >= 0) color += c1-'A'; else color += c1-'0';
     color = color << 4;
     c1=RGB_master.getc(); // discard since we have 8 bits of color

The following code works with the Parallax color sensor COLORPAL (#28380) I didn't reset the device. <<code>> SerialHalfDuplex RGB_master(p9, p10); // this is the color sensor <</code>> In the code <<code>> // RGB comm rate RGB_master.baud(2400); RGB_master.format(8,Serial::None,2); // To Read and format as 24 bit RGB in 32 bits RGB_master.putc('='); RGB_master.putc('m'); RGB_master.putc('!'); c1=RGB_master.getc(); // R if((c1-'A') >= 0) color = c1-'A'; else color = c1-'0'; color = color << 4; c1=RGB_master.getc(); if((c1-'A') >= 0) color += c1-'A'; else color += c1-'0'; color = color << 4; c1=RGB_master.getc(); // discard since we have 8 bits of color c1=RGB_master.getc(); // G if((c1-'A') >= 0) color += c1-'A'; else color += c1-'0'; color = color << 4; c1=RGB_master.getc(); if((c1-'A') >= 0) color += c1-'A'; else color += c1-'0'; color = color << 4; c1=RGB_master.getc(); // discard since we have 8 bits of color c1=RGB_master.getc(); // B if((c1-'A') >= 0) color += c1-'A'; else color += c1-'0'; color = color << 4; c1=RGB_master.getc(); if((c1-'A') >= 0) color += c1-'A'; else color += c1-'0'; color = color << 4; c1=RGB_master.getc(); // discard since we have 8 bits of color <</code>> As time permits, I will wrap and put in a library

Hello. I was wondering, how did you find the color accuracy of this sensor?