Update some outdated configs

Marlin/src/config/examples/MakerParts/Configuration.h

@@ -126,6 +126,15 @@
  */
 #define SERIAL_PORT 0
 
+/**
+ * Select a secondary serial port on the board to use for communication with the host.
+ * This allows the connection of wireless adapters (for instance) to non-default port pins.
+ * Serial port -1 is the USB emulated serial port, if avaialble.
+ *
+ * :[-1, 0, 1, 2, 3, 4, 5, 6, 7]
+ */
+#define SERIAL_PORT_2 -1
+
 /**
  * This setting determines the communication speed of the printer.
  *
@@ -373,8 +382,9 @@
 
 // Comment the following line to disable PID and enable bang-bang.
 #define PIDTEMP
-#define BANG_MAX 255 // limits current to nozzle while in bang-bang mode; 255=full current
-#define PID_MAX BANG_MAX // limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
+#define BANG_MAX 255     // Limits current to nozzle while in bang-bang mode; 255=full current
+#define PID_MAX BANG_MAX // Limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 255=full current
+#define PID_K1 0.95      // Smoothing factor within any PID loop
 #if ENABLED(PIDTEMP)
   #define PID_AUTOTUNE_MENU // Add PID Autotune to the LCD "Temperature" menu to run M303 and apply the result.
   //#define PID_DEBUG // Sends debug data to the serial port.
@@ -384,7 +394,6 @@
                                   // Set/get with gcode: M301 E[extruder number, 0-2]
   #define PID_FUNCTIONAL_RANGE 10 // If the temperature difference between the target temperature and the actual temperature
                                   // is more than PID_FUNCTIONAL_RANGE then the PID will be shut off and the heater will be set to min/max.
-  #define K1 0.95 //smoothing factor within the PID
 
   // If you are using a pre-configured hotend then you can use one of the value sets by uncommenting it
 
@@ -465,12 +474,13 @@
 //===========================================================================
 
 /**
- * Thermal Protection protects your printer from damage and fire if a
- * thermistor falls out or temperature sensors fail in any way.
+ * Thermal Protection provides additional protection to your printer from damage
+ * and fire. Marlin always includes safe min and max temperature ranges which
+ * protect against a broken or disconnected thermistor wire.
  *
- * The issue: If a thermistor falls out or a temperature sensor fails,
- * Marlin can no longer sense the actual temperature. Since a disconnected
- * thermistor reads as a low temperature, the firmware will keep the heater on.
+ * The issue: If a thermistor falls out, it will report the much lower
+ * temperature of the air in the room, and the the firmware will keep
+ * the heater on.
  *
  * If you get "Thermal Runaway" or "Heating failed" errors the
  * details can be tuned in Configuration_adv.h
@@ -723,14 +733,16 @@
 // X and Y axis travel speed (mm/m) between probes
 #define XY_PROBE_SPEED 8000
 
-// Speed for the first approach when double-probing (with PROBE_DOUBLE_TOUCH)
+// Speed for the first approach when double-probing (MULTIPLE_PROBING == 2)
 #define Z_PROBE_SPEED_FAST HOMING_FEEDRATE_Z
 
 // Speed for the "accurate" probe of each point
 #define Z_PROBE_SPEED_SLOW (Z_PROBE_SPEED_FAST / 2)
 
-// Use double touch for probing
-//#define PROBE_DOUBLE_TOUCH
+// The number of probes to perform at each point.
+//   Set to 2 for a fast/slow probe, using the second probe result.
+//   Set to 3 or more for slow probes, averaging the results.
+//#define MULTIPLE_PROBING 2
 
 /**
  * Z probes require clearance when deploying, stowing, and moving between
@@ -920,7 +932,8 @@
   #define ENABLE_LEVELING_FADE_HEIGHT
 
   // For Cartesian machines, instead of dividing moves on mesh boundaries,
-  // split up moves into short segments like a Delta.
+  // split up moves into short segments like a Delta. This follows the
+  // contours of the bed more closely than edge-to-edge straight moves.
   #define SEGMENT_LEVELED_MOVES
   #define LEVELED_SEGMENT_LENGTH 5.0 // (mm) Length of all segments (except the last one)