Cold Extrusion or Wire Feeder

Amatar

Hello everyone, I am trying to use the extrusion port on Ramps 1.4 shield (Arduino Mega 2560) to wire feed a spool of wire that has a stepper motor already mechanically setup and ready to go. Having said that, I am having trouble with the temperature requirements which I am currently trying to disable. Overall, I would like to have my "wire feeder" motor play the role of my extruder without any required temperature parameters. I have already used the option to fake the temperature to 25C but that has not worked. Can anyone help me with this? Thank you.

Repetier

M302 S1

enables cold extrusion so you can extruder with cold extruders as well. You can even put that in the startup gcode to enable automatcically on printer startup.

Amatar

Thank you. I tried that but for some reason the software does not recognize my "extruder". I have a stepper motor connected to Extruder 0 port on the ramps 1.4 but no movement during the print even with cold extrusion allowed. It seems like the extruder port is disabled.

Repetier

Make sure dry run is not enabled. That would prevent all extruder moves. This happens by host debug options or if your heaters are not working or you send a heat command to fake heater. So do not try to heat the faked extruder heater!

Amatar

No it is not enabled, I disabled it in the manual option.

Repetier

Have a look at th elog when you connect and see if it contains a message saying firmware disabled it. If you have no thermistor (or fake) it will do so. Or you have not configured the right extruder motor.

Amatar

How can I set it to disable dry run automatically on startup? I have been manually clicking the circle mark next to dry run in the manual options to do so.

Repetier

Normally it is not enabled only if error conditions require, so remove the condition enabling it.

Host can do on connect since it remembers last set options, but that can be changed in host.

Amatar

When I connect the microcontroller, there are no error messages. Thus, i go to the manual control tab and i put in the code M302 S1. Then, I put in a STL file, slice it, and click print. Result: It moves all axes but extruder motor has no rotation.

This is the log when I click connect:

11:15:23.847 : Printer reset detected - initalizing

11:15:23.847 : start

11:15:23.862 : Transformation matrix: 1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000

11:15:26.488 : Free RAM:3888

11:15:26.488 : SelectExtruder:0

11:15:26.519 : FIRMWARE_NAME:Repetier_0.92.9 FIRMWARE_URL:https://github.com/repetier/Repetier-Firmware/ PROTOCOL_VERSION:1.0 MACHINE_TYPE:Mendel EXTRUDER_COUNT:1 REPETIER_PROTOCOL:3

11:15:26.519 : Printed filament:0.00m Printing time:0 days 0 hours 0 min

11:15:26.519 : PrinterMode:FFF

11:15:26.519 : X:-0.01 Y:-0.01 Z:-0.012 E:NAN

11:15:26.519 : DebugLevel:6

11:15:26.535 : SelectExtruder:0

11:15:26.535 : Begin file list

11:15:26.535 : End file list

11:15:26.535 : DebugLevel:6

11:15:26.535 : SelectExtruder:0

Amatar

So, now I think I have gotten through the cold extrusion part but when I try to rotate the extruder motor, it screeches from a low to high pitch noise depending on amps regulated. I already doubled checked if it is the stepper driver and that isn't the problem. I even checked different cables to be sure it wasn't a wiring problem.

Repetier

Screaming motors are normally lost steps. Check in eeprom what steps per mm are. Too high value or too high start speed can cause loosing steps from start on. Also check motor can rotate when not powered and is not blocked.

Amatar

The steps per mm are set at 80, also the motor spins manually using the x y or z axes ports on the ramps.

Repetier

Yes, so E port is defect or you have settings not working for that. E has much higher jerk (start speed), acceleration and steps per mm set normally then x,y and z, so check that in your eeprom.

Amatar

This is my eeprom:

#ifndef _EEPROM_H

#define EEPROM_H

// Id to distinguish version changes

#define EEPROM_PROTOCOL_VERSION 16

/** Where to start with our datablock in memory. Can be moved if you

have problems with other modules using the eeprom /

#define EPR_MAGIC_BYTE 0

#define EPR_ACCELERATION_TYPE 1

#define EPR_XAXIS_STEPS_PER_MM 3

#define EPR_YAXIS_STEPS_PER_MM 7

#define EPR_ZAXIS_STEPS_PER_MM 11

#define EPR_X_MAX_FEEDRATE 15

#define EPR_Y_MAX_FEEDRATE 19

#define EPR_Z_MAX_FEEDRATE 23

#define EPR_X_HOMING_FEEDRATE 27

#define EPR_Y_HOMING_FEEDRATE 31

#define EPR_Z_HOMING_FEEDRATE 35

#define EPR_MAX_JERK 39

//#define EPR_OPS_MIN_DISTANCE 43

#define EPR_MAX_ZJERK 47

#define EPR_X_MAX_ACCEL 51

#define EPR_Y_MAX_ACCEL 55

#define EPR_Z_MAX_ACCEL 59

#define EPR_X_MAX_TRAVEL_ACCEL 63

#define EPR_Y_MAX_TRAVEL_ACCEL 67

#define EPR_Z_MAX_TRAVEL_ACCEL 71

#define EPR_BAUDRATE 75

#define EPR_MAX_INACTIVE_TIME 79

#define EPR_STEPPER_INACTIVE_TIME 83

//#define EPR_OPS_RETRACT_DISTANCE 87

//#define EPR_OPS_RETRACT_BACKLASH 91

#define EPR_EXTRUDER_SPEED 95

//#define EPR_OPS_MOVE_AFTER 99

//#define EPR_OPS_MODE 103

#define EPR_INTEGRITY_BYTE 104 // Here the xored sum over eeprom is stored

#define EPR_VERSION 105 // Version id for updates in EEPROM storage

#define EPR_BED_HEAT_MANAGER 106

#define EPR_BED_DRIVE_MAX 107

#define EPR_BED_PID_PGAIN 108

#define EPR_BED_PID_IGAIN 112

#define EPR_BED_PID_DGAIN 116

#define EPR_BED_PID_MAX 120

#define EPR_BED_DRIVE_MIN 124

#define EPR_PRINTING_TIME 125 // Time in seconds printing

#define EPR_PRINTING_DISTANCE 129 // Filament length printed

#define EPR_X_HOME_OFFSET 133

#define EPR_Y_HOME_OFFSET 137

#define EPR_Z_HOME_OFFSET 141

#define EPR_X_LENGTH 145

#define EPR_Y_LENGTH 149

#define EPR_Z_LENGTH 153

#define EPR_BACKLASH_X 157

#define EPR_BACKLASH_Y 161

#define EPR_BACKLASH_Z 165

#define EPR_Z_PROBE_X_OFFSET 800

#define EPR_Z_PROBE_Y_OFFSET 804

#define EPR_Z_PROBE_HEIGHT 808

#define EPR_Z_PROBE_SPEED 812

#define EPR_Z_PROBE_X1 816

#define EPR_Z_PROBE_Y1 820

#define EPR_Z_PROBE_X2 824

#define EPR_Z_PROBE_Y2 828

#define EPR_Z_PROBE_X3 832

#define EPR_Z_PROBE_Y3 836

#define EPR_Z_PROBE_XY_SPEED 840

#define EPR_AUTOLEVEL_MATRIX 844

#define EPR_AUTOLEVEL_ACTIVE 880

#define EPR_DELTA_DIAGONAL_ROD_LENGTH 881

#define EPR_DELTA_HORIZONTAL_RADIUS 885

#define EPR_DELTA_SEGMENTS_PER_SECOND_PRINT 889

#define EPR_DELTA_SEGMENTS_PER_SECOND_MOVE 891

#define EPR_DELTA_TOWERX_OFFSET_STEPS 893

#define EPR_DELTA_TOWERY_OFFSET_STEPS 895

#define EPR_DELTA_TOWERZ_OFFSET_STEPS 897

#define EPR_DELTA_ALPHA_A 901

#define EPR_DELTA_ALPHA_B 905

#define EPR_DELTA_ALPHA_C 909

#define EPR_DELTA_RADIUS_CORR_A 913

#define EPR_DELTA_RADIUS_CORR_B 917

#define EPR_DELTA_RADIUS_CORR_C 921

#define EPR_DELTA_MAX_RADIUS 925

#define EPR_Z_PROBE_BED_DISTANCE 929

#define EPR_DELTA_DIAGONAL_CORRECTION_A 933

#define EPR_DELTA_DIAGONAL_CORRECTION_B 937

#define EPR_DELTA_DIAGONAL_CORRECTION_C 941

#define EPR_TOUCHSCREEN 946 // - 975 = 30 byte for touchscreen calibration data

// Axis compensation

#define EPR_AXISCOMP_TANXY 976

#define EPR_AXISCOMP_TANYZ 980

#define EPR_AXISCOMP_TANXZ 984

#define EPR_DISTORTION_CORRECTION_ENABLED 988

#define EPR_RETRACTION_LENGTH 992

#define EPR_RETRACTION_LONG_LENGTH 996

#define EPR_RETRACTION_SPEED 1000

#define EPR_RETRACTION_Z_LIFT 1004

#define EPR_RETRACTION_UNDO_EXTRA_LENGTH 1008

#define EPR_RETRACTION_UNDO_EXTRA_LONG_LENGTH 1012

#define EPR_RETRACTION_UNDO_SPEED 1016

#define EPR_AUTORETRACT_ENABLED 1020

#define EPR_Z_PROBE_Z_OFFSET 1024

#define EPR_SELECTED_LANGUAGE 1028

#define EPR_ACCELERATION_FACTOR_TOP 1032

#define EPR_BENDING_CORRECTION_A 1036

#define EPR_BENDING_CORRECTION_B 1040

#define EPR_BENDING_CORRECTION_C 1044

#if EEPROM_MODE != 0

#define EEPROM_FLOAT(x) HAL::eprGetFloat(EPR_##x)

#define EEPROM_INT32(x) HAL::eprGetInt32(EPR##x)

#define EEPROM_BYTE(x) HAL::eprGetByte(EPR_##x)

#define EEPROM_SET_BYTE(x,val) HAL::eprSetByte(EPR_##x,val)

#else

#define EEPROM_FLOAT(x) (float)(x)

#define EEPROM_INT32(x) (int32_t)(x)

#define EEPROM_BYTE(x) (uint8_t)(x)

#define EEPROM_SET_BYTE(x,val)

#endif

#define EEPROM_EXTRUDER_OFFSET 200

// bytes per extruder needed, leave some space for future development

#define EEPROM_EXTRUDER_LENGTH 100

// Extruder positions relative to extruder start

#define EPR_EXTRUDER_STEPS_PER_MM 0

#define EPR_EXTRUDER_MAX_FEEDRATE 4

// Feedrate from halted extruder in mm/s

#define EPR_EXTRUDER_MAX_START_FEEDRATE 8

// Acceleration in mm/s²

#define EPR_EXTRUDER_MAX_ACCELERATION 12

#define EPR_EXTRUDER_HEAT_MANAGER 16

#define EPR_EXTRUDER_DRIVE_MAX 17

#define EPR_EXTRUDER_PID_PGAIN 18

#define EPR_EXTRUDER_PID_IGAIN 22

#define EPR_EXTRUDER_PID_DGAIN 26

#define EPR_EXTRUDER_DEADTIME EPR_EXTRUDER_PID_PGAIN

#define EPR_EXTRUDER_PID_MAX 30

#define EPR_EXTRUDER_X_OFFSET 31

#define EPR_EXTRUDER_Y_OFFSET 35

#define EPR_EXTRUDER_WATCH_PERIOD 39

#define EPR_EXTRUDER_ADVANCE_K 41

#define EPR_EXTRUDER_DRIVE_MIN 45

#define EPR_EXTRUDER_ADVANCE_L 46

#define EPR_EXTRUDER_WAIT_RETRACT_TEMP 50

#define EPR_EXTRUDER_WAIT_RETRACT_UNITS 52

#define EPR_EXTRUDER_COOLER_SPEED 54

// 55-57 free for byte sized parameter

#define EPR_EXTRUDER_MIXING_RATIOS 58 // 16*2 byte ratios = 32 byte -> end = 89

#define EPR_EXTRUDER_Z_OFFSET 90

#ifndef Z_PROBE_BED_DISTANCE

#define Z_PROBE_BED_DISTANCE 5.0

#endif

Amatar

Also, do i need a thermistor installed if I'm only trying to cold extrude using the "fake 25C at all times"

Repetier

Fake thermistor is ok for cold extrusion.

Above is not your eeprom. It is eeprom.h whcih is just a file identical for all users. To see eeprom send M205 and copy log output.

Amatar

14:20:58.777 : EPR:0 1028 0 Language

14:20:58.777 : EPR:2 75 115200 Baudrate

14:20:58.777 : EPR:3 129 0.000 Filament printed [m]

14:20:58.793 : EPR:2 125 0 Printer active [s]

14:20:58.793 : EPR:2 79 0 Max. inactive time [ms,0=off]

14:20:58.793 : EPR:2 83 360000 Stop stepper after inactivity [ms,0=off]

14:20:58.793 : EPR:3 3 80.0000 X-axis steps per mm

14:20:58.793 : EPR:3 7 80.0000 Y-axis steps per mm

14:20:58.809 : EPR:3 11 80.0000 Z-axis steps per mm

14:20:58.809 : EPR:3 15 200.000 X-axis max. feedrate [mm/s]

14:20:58.809 : EPR:3 19 200.000 Y-axis max. feedrate [mm/s]

14:20:58.809 : EPR:3 23 2.000 Z-axis max. feedrate [mm/s]

14:20:58.824 : EPR:3 27 40.000 X-axis homing feedrate [mm/s]

14:20:58.824 : EPR:3 31 40.000 Y-axis homing feedrate [mm/s]

14:20:58.824 : EPR:3 35 2.000 Z-axis homing feedrate [mm/s]

14:20:58.824 : EPR:3 39 20.000 Max. jerk [mm/s]

14:20:58.824 : EPR:3 47 0.300 Max. Z-jerk [mm/s]

14:20:58.840 : EPR:3 133 0.000 X min pos [mm]

14:20:58.840 : EPR:3 137 0.000 Y min pos [mm]

14:20:58.846 : EPR:3 141 0.000 Z min pos [mm]

14:20:58.850 : EPR:3 145 200.000 X max length [mm]

14:20:58.854 : EPR:3 149 200.000 Y max length [mm]

14:20:58.854 : EPR:3 153 120.000 Z max length [mm]

14:20:58.859 : EPR:3 51 1000.000 X-axis acceleration [mm/s²]

14:20:58.863 : EPR:3 55 1000.000 Y-axis acceleration [mm/s²]

14:20:58.867 : EPR:3 59 100.000 Z-axis acceleration [mm/s²]

14:20:58.871 : EPR:3 63 1000.000 X-axis travel acceleration [mm/s²]

14:20:58.879 : EPR:3 67 1000.000 Y-axis travel acceleration [mm/s²]

14:20:58.883 : EPR:3 71 100.000 Z-axis travel acceleration [mm/s²]

14:20:58.883 : EPR:3 1024 0.000 Coating thickness [mm]

14:20:58.883 : EPR:0 880 0 Autolevel active (1/0)

14:20:58.883 : EPR:0 1020 0 Enable retraction conversion [0/1]

14:20:58.883 : EPR:3 992 3.000 Retraction length [mm]

14:20:58.898 : EPR:3 1000 40.000 Retraction speed [mm/s]

14:20:58.898 : EPR:3 1004 0.000 Retraction z-lift [mm]

14:20:58.898 : EPR:3 1008 0.000 Extra extrusion on undo retract [mm]

14:20:58.898 : EPR:3 1016 20.000 Retraction undo speed

14:20:58.914 : EPR:3 200 370.000 Extr.1 steps per mm

14:20:58.914 : EPR:3 204 50.000 Extr.1 max. feedrate [mm/s]

14:20:58.914 : EPR:3 208 20.000 Extr.1 start feedrate [mm/s]

14:20:58.914 : EPR:3 212 5000.000 Extr.1 acceleration [mm/s²]

14:20:58.914 : EPR:0 216 3 Extr.1 heat manager [0-3]

14:20:58.929 : EPR:0 217 230 Extr.1 PID drive max

14:20:58.929 : EPR:0 245 40 Extr.1 PID drive min

14:20:58.929 : EPR:3 218 7.0000 Extr.1 PID P-gain/dead-time

14:20:58.945 : EPR:3 222 2.0000 Extr.1 PID I-gain

14:20:58.945 : EPR:3 226 40.0000 Extr.1 PID D-gain

14:20:58.945 : EPR:0 230 255 Extr.1 PID max value [0-255]

14:20:58.945 : EPR:2 231 0 Extr.1 X-offset [steps]

14:20:58.945 : EPR:2 235 0 Extr.1 Y-offset [steps]

14:20:58.961 : EPR:2 290 0 Extr.1 Z-offset [steps]

14:20:58.961 : EPR:1 239 1 Extr.1 temp. stabilize time [s]

14:20:58.961 : EPR:1 250 150 Extr.1 temp. for retraction when heating [C]

14:20:58.961 : EPR:1 252 0 Extr.1 distance to retract when heating [mm]

14:20:58.976 : EPR:0 254 255 Extr.1 extruder cooler speed [0-255]

Amatar

alright, I was able to get my extruder to work, but now i have a question on how to increase the extruding amount. For example, my wire feeder is barely feeding any wire so how would I increase the amount of rotations per say.

Repetier

Increasing steps per mm increases the amount permanently. You can change them in eeprom editor in host or server.