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X axis failure

Posted by Nigel Kelly 
X axis failure
April 25, 2019 12:03PM
Hi all, I am running Geekcreit megga 256 and Geekcreit ramps 1.4 with Marlin / arduino 1.8.9 on my homemade i3 clone and since I upgraded arduino to 1.8.9 my X axis will not move, I have tested the continuity of the motor winding's from the board (ramps) end of the cable and both pairs of winding's are fine, I have changed the A4988 stepper driver for a new one and checked and rechecked both configuration.h and ramps pins file and both look fine. When I run clear eeprom prior to uploading the compiled Marlin code the marlin serial monitor and when connected Pronterface display an eeprom version mismatch. I can clear with M501 & M502 to load defaults codes but I can not get X axis to move or home, can someone please advise.
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