extruder motor don't work

[Jeepfrog]

i have tried all combinations now the extruder just pulses

[Mark]

"what was the fix for this my extruder drive the wrong direction if push retract it extrudes if i click extrude it retracts"
It doesn't make sense. you should just invert the direction of E0(extruder 1) or E1(extruder2), and it always works.

[Jeepfrog]

ok looks like the problem was in this code

// delta speeds must be the same on xyz
#define DEFAULT_AXIS_STEPS_PER_UNIT {80, 80, 80, 93} // default steps per unit for Kossel (GT2, 20 tooth)
#define DEFAULT_MAX_FEEDRATE {400, 400, 400, 45} // (mm/sec)
#define DEFAULT_MAX_ACCELERATION {5000,5000,5000,100} // X, Y, Z, E maximum start speed for accelerated moves. E default values are good for skeinforge 40+, for older versions raise them a lot.

#define DEFAULT_MAX_ACCELERATION {5000,5000,5000,100} all were set at 5000

[Mark]

Mine are as follows:
#define DEFAULT_AXIS_STEPS_PER_UNIT {80,80,2560,93} // MXL, Z M8=1.25, MK8
#define DEFAULT_MAX_FEEDRATE {400, 400, 2, 45} // (mm/sec)
#define DEFAULT_MAX_ACCELERATION {5000,5000,50,5000} // X, Y, Z, E maximum start speed for accelerated moves. E default values are good for Skeinforge 40+, for older versions raise them a lot.

#define DEFAULT_ACCELERATION 1000 // X, Y, Z and E max acceleration in mm/s^2 for printing moves
#define DEFAULT_RETRACT_ACCELERATION 2000 // X, Y, Z and E max acceleration in mm/s^2 for retracts


You can change it to see the result.