Support for Rigidbot V2

Marlin/boards.h

@@ -40,6 +40,7 @@
 #define BOARD_RAMPS_13_SF       38   // RAMPS 1.3 (Power outputs: Spindle, Controller Fan)
 #define BOARD_FELIX2            37   // Felix 2.0+ Electronics Board (RAMPS like)
 #define BOARD_RIGIDBOARD        42   // Invent-A-Part RigidBoard
+#define BOARD_RIGIDBOARD_V2     52   // Invent-A-Part RigidBoard V2
 #define BOARD_RAMPS_14_EFB      43   // RAMPS 1.4 (Power outputs: Hotend, Fan, Bed)
 #define BOARD_RAMPS_14_EEB      44   // RAMPS 1.4 (Power outputs: Hotend0, Hotend1, Bed)
 #define BOARD_RAMPS_14_EFF      45   // RAMPS 1.4 (Power outputs: Hotend, Fan0, Fan1)

Marlin/example_configurations/RigidBot/Configuration.h

@@ -117,8 +117,11 @@
 
 // The following define selects which electronics board you have.
 // Please choose the name from boards.h that matches your setup
+// for Rigidbot version 1 : #define MOTHERBOARD BOARD_RIGIDBOARD
+// for Rigidbot Version 2 : #define MOTHERBOARD BOARD_RIGIDBOARD_V2
+
 #ifndef MOTHERBOARD
-  #define MOTHERBOARD BOARD_RIGIDBOARD
+  #define MOTHERBOARD BOARD_RIGIDBOARD_V2
 #endif
 
 // Optional custom name for your RepStrap or other custom machine

Marlin/pins.h

@@ -129,6 +129,8 @@
   #include "pins_MKS_BASE.h"
 #elif MB(RIGIDBOARD)
   #include "pins_RIGIDBOARD.h"
+#elif MB(RIGIDBOARD_V2)
+  #include "pins_RIGIDBOARD_V2.h"
 #elif MB(MEGACONTROLLER)
   #include "pins_MEGACONTROLLER.h"
 #elif MB(BQ_ZUM_MEGA_3D)

Marlin/pins_RIGIDBOARD_V2.h

@@ -0,0 +1,40 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+/**
+ * RIGIDBOARD V2 Arduino Mega with RAMPS v1.4 pin assignments
+ */
+
+#include "pins_RIGIDBOARD.h"
+
+// I2C based DAC like on the Printrboard REVF
+#define DAC_STEPPER_CURRENT
+// Channels available for DAC, For Rigidboard there are 4
+#define DAC_STEPPER_ORDER {0,1,2,3}
+
+#define DAC_STEPPER_SENSE    0.11
+#define DAC_STEPPER_ADDRESS  0
+#define DAC_STEPPER_MAX   5000
+#define DAC_STEPPER_VREF     1 //internal Vref, gain 1x = 2.048V
+#define DAC_STEPPER_GAIN     0
+#define DAC_DISABLE_PIN     42 //  set low to enable DAC
+#define DAC_OR_ADDRESS    0x01