Split up pins to make it more manageable

Hopefully this is helpful to organization and future expansion….

Marlin/pins_PRINTRBOARD.h

@@ -0,0 +1,88 @@
+/**
+ * Printrboard pin assignments (AT90USB1286)
+ * Requires the Teensyduino software with Teensy++ 2.0 selected in Arduino IDE!
+ * http://www.pjrc.com/teensy/teensyduino.html
+ * See http://reprap.org/wiki/Printrboard for more info
+ */
+
+#ifndef __AVR_AT90USB1286__
+  #error Oops!  Make sure you have 'Teensy++ 2.0' selected from the 'Tools -> Boards' menu.
+#endif
+
+#ifdef AT90USBxx_TEENSYPP_ASSIGNMENTS  // use Teensyduino Teensy++2.0 pin assignments instead of Marlin traditional.
+  #error These Printrboard assignments depend on traditional Marlin assignments, not AT90USBxx_TEENSYPP_ASSIGNMENTS in fastio.h
+#endif
+
+#define AT90USB 1286  // Disable MarlinSerial etc.
+
+#define LARGE_FLASH        true
+
+#define X_STEP_PIN          0
+#define X_DIR_PIN           1
+#define X_ENABLE_PIN       39
+
+#define Y_STEP_PIN          2
+#define Y_DIR_PIN           3
+#define Y_ENABLE_PIN       38
+
+#define Z_STEP_PIN          4
+#define Z_DIR_PIN           5
+#define Z_ENABLE_PIN       23
+
+#define E0_STEP_PIN         6
+#define E0_DIR_PIN          7
+#define E0_ENABLE_PIN      19
+
+#define HEATER_0_PIN       21  // Extruder
+#define HEATER_1_PIN       46
+#define HEATER_2_PIN       47
+#define HEATER_BED_PIN     20
+
+// If soft or fast PWM is off then use Teensyduino pin numbering, Marlin
+// fastio pin numbering otherwise
+#ifdef FAN_SOFT_PWM || FAST_PWM_FAN
+  #define FAN_PIN          22
+#else
+  #define FAN_PIN          16
+#endif
+
+#define X_STOP_PIN         35
+#define Y_STOP_PIN          8
+#define Z_STOP_PIN         36
+#define TEMP_0_PIN          1  // Extruder / Analog pin numbering
+#define TEMP_BED_PIN        0  // Bed / Analog pin numbering
+
+#ifdef FILAMENT_SENSOR
+  #define FILWIDTH_PIN      2
+#endif
+
+#define TEMP_1_PIN         -1
+#define TEMP_2_PIN         -1
+
+#define SDPOWER            -1
+#define SDSS                8
+#define LED_PIN            -1
+#define PS_ON_PIN          -1
+#define KILL_PIN           -1
+#define ALARM_PIN          -1
+
+#ifndef SDSUPPORT
+// these pins are defined in the SD library if building with SD support
+  #define SCK_PIN           9
+  #define MISO_PIN         11
+  #define MOSI_PIN         10
+#endif
+
+#if defined(ULTRA_LCD) && defined(NEWPANEL)
+  //we have no buzzer installed
+  #define BEEPER -1
+  //LCD Pins
+  #ifdef LCD_I2C_PANELOLU2
+    #define BTN_EN1 27  //RX1 - fastio.h pin mapping 27
+    #define BTN_EN2 26  //TX1 - fastio.h pin mapping 26
+    #define BTN_ENC 43 //A3 - fastio.h pin mapping 43
+    #define SDSS   40 //use SD card on Panelolu2 (Teensyduino pin mapping)
+  #endif // LCD_I2C_PANELOLU2
+  //not connected to a pin
+  #define SDCARDDETECT -1    
+#endif // ULTRA_LCD && NEWPANEL