added some comments to the calibration parameters

brew.ino

@@ -114,19 +114,19 @@ Temperature                   basePT100("base",
                                         PT100_BASE_INPUT_PIN,
                                         PT100_BASE_TIME_BETWEEN_READINGS,
                                         //2.0298, 2.0259, 665.24, 662.17);      // orig
-                                        2.0208, 2.0281, 663.52, 665.49);
+                                        2.0208, 2.0281, 663.52, 665.49);        // calibration 2018-06-25
 Temperature                   upPT100("up",
                                       PT100_UP_OUTPUT_PIN,
                                       PT100_UP_INPUT_PIN,
                                       PT100_UP_TIME_BETWEEN_READINGS,
                                       //2.0274, 2.0245, 659.43, 656.72);      // orig
-                                      2.0279, 2.0264, 656.57, 659);
+                                      2.0279, 2.0264, 656.57, 659);           // calibration 2018-06-25
 Temperature                   downPT100("down",
                                         PT100_DOWN_OUTPUT_PIN,
                                         PT100_DOWN_INPUT_PIN,
                                         PT100_DOWN_TIME_BETWEEN_READINGS,
                                         //2.0309, 2.0288, 659.15, 655.35);      // orig
-                                        2.0157, 2.0428, 662.11, 662.85);
+                                        2.0157, 2.0428, 662.11, 662.85);        // calibration 2018-06-25
 
 // ######################### INTERRUPTS #########################
 void isr ()  {    // Interrupt service routine is executed when a HIGH to LOW transition is detected on CLK