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--- tevo_tarantula_i3_3d_printer [16.02.2020 14:55] – [Setting the Z Axis Sensor offset] Pascal Suter
+++ tevo_tarantula_i3_3d_printer [16.02.2020 23:14] – [Slicer Software and Settings] Pascal Suter
@@ Line 122: / Line 122: @@
 for more detailed settings see [[How I 3d Print - Slicer settings]]
+===== Dead Stepper driver - workaround =====
+i recently printed a quite tall structure over night. it tunred out, that the screws of the z-axis wheels did not clear the mounting bracket for the extruder. as a result of the z-axis missed most of its steps during several hours and was jammend.
+sadly it turned out that after this the Z-axis stepper driver was broken. when i moved the z-axis the stepper would randomly move forward or backward or just humm. i've tried to adjust the potentiometer but with no luck.
+as a workaround i changed the marlin config, so that it's now using the E1 (second extruder, which i don't have) stepper driver in place of the z-axis. i could simply move the molex connector over from Z to E1 and continue to print.
+to implement the workaround, i had to start my Arduino IDE, open the Marlin project and edit the ''pins_RAMPS.h'' file. i searched for the Z- and E1 axis and swapped the values for the pins, they now look like this:
+<code>
+#define Z_STEP_PIN         36
+#define Z_DIR_PIN          34
+#define Z_ENABLE_PIN       30
+#ifndef Z_CS_PIN
+  #define Z_CS_PIN         44
+#endif
+#define E1_STEP_PIN        46
+#define E1_DIR_PIN         48
+#define E1_ENABLE_PIN      62
+#ifndef E1_CS_PIN
+  #define E1_CS_PIN        40
+#endif
+</code>
+i then re-compiled and uploaded the firmware and could print right away.