Added support for the Rambo reprap electronics board. Added Mcodes to set

motor current and microstepping pins.

Marlin/pins.h

@@ -1,6 +1,18 @@
 #ifndef PINS_H
 #define PINS_H
 
+#define X_MS1_PIN -1
+#define X_MS2_PIN -1
+#define Y_MS1_PIN -1
+#define Y_MS2_PIN -1
+#define Z_MS1_PIN -1
+#define Z_MS2_PIN -1
+#define E0_MS1_PIN -1
+#define E0_MS2_PIN -1
+#define E1_MS1_PIN -1
+#define E1_MS2_PIN -1
+#define DIGIPOTSS_PIN -1
+
 #if MOTHERBOARD == 99
 #define	KNOWN_BOARD 1
 
@@ -1128,6 +1140,76 @@
 
 #endif
 
+#if MOTHERBOARD == 301
+#define KNOWN_BOARD
+/*****************************************************************
+* Rambo Pin Assignments
+******************************************************************/
+
+#ifndef __AVR_ATmega2560__
+#error Oops!  Make sure you have 'Arduino Mega 2560' selected from the 'Tools -> Boards' menu.
+#endif
+
+#define X_STEP_PIN 37
+#define X_DIR_PIN 48
+#define X_MIN_PIN 12
+#define X_MAX_PIN 19
+#define X_ENABLE_PIN 29
+#define X_MS1_PIN 40
+#define X_MS2_PIN 41
+
+#define Y_STEP_PIN 36
+#define Y_DIR_PIN 49
+#define Y_MIN_PIN 11
+#define Y_MAX_PIN 18
+#define Y_ENABLE_PIN 28
+#define Y_MS1_PIN 69
+#define Y_MS2_PIN 39
+
+#define Z_STEP_PIN 35
+#define Z_DIR_PIN 47
+#define Z_MIN_PIN 10
+#define Z_MAX_PIN 15
+#define Z_ENABLE_PIN 27
+#define Z_MS1_PIN 68
+#define Z_MS2_PIN 67
+
+#define HEATER_BED_PIN 3
+#define TEMP_BED_PIN 2 
+
+#define HEATER_0_PIN  9
+#define TEMP_0_PIN 0
+
+#define HEATER_1_PIN 7
+#define TEMP_1_PIN 1
+
+#define HEATER_2_PIN -1
+#define TEMP_2_PIN -1
+
+#define E0_STEP_PIN         34
+#define E0_DIR_PIN          43
+#define E0_ENABLE_PIN       26
+#define E0_MS1_PIN 65
+#define E0_MS2_PIN 66
+
+#define E1_STEP_PIN         33
+#define E1_DIR_PIN          42
+#define E1_ENABLE_PIN       25
+#define E1_MS1_PIN 63
+#define E1_MS2_PIN 64
+
+#define DIGIPOTSS_PIN 38
+#define DIGIPOT_CHANNELS {4,5,3,0,1} // X Y Z E0 E1 digipot channels to stepper driver mapping
+
+#define SDPOWER            -1
+#define SDSS               53
+#define LED_PIN            13
+#define FAN_PIN            8
+#define PS_ON_PIN          4
+#define KILL_PIN           -1
+#define SUICIDE_PIN        -1  //PIN that has to be turned on right after start, to keep power flowing.
+
+#endif
 
 #ifndef KNOWN_BOARD
 #error Unknown MOTHERBOARD value in configuration.h