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I double checked all wiring and all was good! heated extruder up in Repieter and tried to extrude and nothing also no resistance on motor at all. I quit Repieter and LCD read a message about motor I heard a faint click and then there was resistance to the motor. Thinking this was an LCD adapter ...

I just returned from the university so i am going to check for holding torque now..that does make good sense, otherwise power is not getting to the motor or something has horribly gone wrong.. I will check in just a few moments and report back. Just strange how it just stopped extruding mid print ...

Extruder gears turn fine and dry run in host not selected I will try later after classes to resolve.. thanx ill post my findings later

After my last issues I was excited to be printing again with the new firmware until part way through printing a single walled calibration cube my extruder stopped moving/feeding. I cant figure out why? connections are all good and before any of my last issues i have printed many a model on this ...

Ok so I entered z value in eprom to 493.80 to get z axis to be @0 ..re-leveled bed and it is now printing.. better than ever..not sure why and i dont care...its printing yea.. i will update later... thanx all.

Thanks but I have the newer RAMBO so already at 16 steps and firmware is set right as well as printer set up in Repeiter. what else could it be? the carriage stops 100mm above bed at z0...

OK so weird... Polygon I believe you were right about it not being the Rambo. I uninstalled everything and down loaded the new REPIETER firmware from seemcnc download page and uploaded it with 15 tooth pulley and basic info and everything works including my LCD only problem now is the carriage wont ...

but what about e_min and e_max values?

Polygon can you give me brief run down on how to switch these values in pins.h I am going to go tinker but having a mentor would be most helpful?

Polygon you are a god amongst men -Good idea, I will try that and that would narrow it down completely I think.. then there should be no question.. Thank you again you're pretty smart I was out of ideas..I will let you know what happens

Yes the axis all read L when not pressed and all motors move down when commanded but x axis will continue moving in small incremental micro steps on its own. I have switched all motors to the x port on card and they all do same thing. I have owned this since Feb and never had issues other than ...

Polygon, Yes the switches are all reporting H value in repeiter when pressed but x axis after it reaches top of tower trips limit then raises back up under force continuing to step motor ...I have switched the axis motors from all to x port on card and all do the same thing isolating the issue to ...

After double checking all connections and even setting lower digipot settings in firm ware nothing has changed, also replaced the mechanical end stop and switched out motors but same results ..which is entering G28 to home ..all motors travel to top and press end stops, back off programmed distance ...

Thanks for the advice, I will double check connections but I did switch motors to each different axis on board and got same jitter on all of them coming from x axis port on card.. and yes I did initialise the switches prior to this and when loading new firm ware so im still puzzled and hoping board ...

I have had my machine since the end of Feb. The build went fairly easy and was up and printing with decent results within 3 days except for printing larger objects due to software stall or having to re calibrate bed and axis height. I had noticed the black dust in tower wells but thought it was a ...