Mendel i3, ramps 1.4 extruder motor does not work

Hey RepPappers!

I am fighting with my i3 prusa I built. X, Y, Z work great but I can not get extruder motor working. I swapped stepstick from extruder to X and tested movement - it worked fine when I moved X! But when I put motor and stepstick back to extruder and tried to move extruder it was silent.

My Marlin Configuration.h does not change much from default, here is a diff:

diff --git a/Marlin/Configuration.h b/Marlin/Configuration.h
index d2aba19..82a93d9 100644
--- a/Marlin/Configuration.h
+++ b/Marlin/Configuration.h
@@ -82,7 +82,7 @@
// 999 = Leapfrog

#ifndef MOTHERBOARD
-#define MOTHERBOARD 7
+#define MOTHERBOARD 33
#endif

// Define this to set a custom name for your generic Mendel,
@@ -142,10 +142,10 @@
// 147 is Pt100 with 4k7 pullup
// 110 is Pt100 with 1k pullup (non standard)

-#define TEMP_SENSOR_0 -1
+#define TEMP_SENSOR_0 1
#define TEMP_SENSOR_1 -1
#define TEMP_SENSOR_2 0
-#define TEMP_SENSOR_BED 0
+#define TEMP_SENSOR_BED 1
@@ -562,7 +562,7 @@ const bool Z_MAX_ENDSTOP_INVERTING = true; // set to true to invert the logic of

// The RepRapDiscount Smart Controller (white PC
// [reprap.org]
-//#define REPRAP_DISCOUNT_SMART_CONTROLLER
+#define REPRAP_DISCOUNT_SMART_CONTROLLER

// The GADGETS3D G3D LCD/SD Controller (blue PC
// [reprap.org]
@@ -572,7 +572,7 @@ const bool Z_MAX_ENDSTOP_INVERTING = true; // set to true to invert the logic of
// [reprap.org]
//
// ==> REMEMBER TO INSTALL U8glib to your ARDUINO library folder: [code.google.com]
-//#define REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER
+#define REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER

// The RepRapWorld REPRAPWORLD_KEYPAD v1.1
// [reprapworld.com]


diff --git a/Marlin/Marlin.ino b/Marlin/Marlin.ino
index 79c934b..3a1285e 100644
--- a/Marlin/Marlin.ino
+++ b/Marlin/Marlin.ino
@@ -1,3 +1,4 @@
+#include


I just tried almost everything I was thinking of and don't want to give up.

I bought new arduino mega - no change,
My test with swapping motor and step stick proves that step stick and motor is fine.

1. Do I need to change anything in config?
2. How to test that ramps is not faulty (for extruder motor)?

Thanks,
Marek

Edited 1 time(s). Last edit at 11/03/2014 06:26PM by fornve.

By default, the firmware won't let you move the extruder cold. If that's the problem, you can send an M302 command to temporarily override this safety feature.

Andrew,

That would explain it, thanks a lot!

Regards,
Marek