Hi! I have just built my first prusa mendel i2. Everything seems ok but when Im going to print a test object the extruder reject the filament (the stepper turns in wrong direction for a 2 secs) before consume filament. My printer does exactly this when I click "print":
Do home for 3 axis (ok)
Hot extruder and bed to the specfied temperature (ok)
Move extruder to the position for start printing (ok)
Move out the filament! (the stepper who feed the extruder turns in the wrong direction and when it stops turning I put the filament again in)
Stepper turns in the right direction and move right, but the filament does not go through the extruder (maybe a cap inside that must be remove? The extruder is new...)
I also notice that at the begining (when the printer has just started printing) sometimes the printer just dont stop moving the actual axis (I have to disconnect it because). It is like the program freezes. I revised all connections, tried differents firmwares with no success.
My device is prusa mendel i2 with Melzi v2. The firmware Im using is [
github.com]
In Configuration.h I uncommented REPRAPPRO_MENDEL2, REPRAPPRO_MELZI and SERIAL_R and adjusted the temperaure sensor constants
Do you have any idea about this extruder behaviour?
Thank you!
