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HUXLEY

Melzi Bluetooth Umbau

Um die USB-Verbindung zwischen Melzi und dem PC zu beseitigen, kann man Bluetooth verwenden. Auf dem Markt ist ein billiges Modul namens „JY-MCU“ (Anbieter Shenzhen Jiayuan Electronic Co., Ltd.) Erhältlich.

Bottom Top

Setup anpassen

Bevor das Modul verwendet werden kann, muss die Standardeinstellung geändert werden. Verbinden Sie das Modul vom PC über die USB ↔ RS232-Schnittstelle (RxD / TxD) mit den Standardeinstellungen (9600, N, 8, 1). Das Modul sollte zu diesem Zeitpunkt nicht gekoppelt werden. Wenden Sie mit einem Terminalprogramm die folgenden AT-Befehle an:

AT OK 
AT+BAUD8 OK115200BAUD (set baud rate for Melzi)
AT+NAMEHUXLEY OKsetname (optional set name, default: linvor)
AT+PIN0000 OKsetPIN  (optional set pin, default: 1234)

Weitere Details zur Konfiguration findest du hier [1]

Verdrahtung

Bei Melzi übernimmt einer der nicht verwendeten Puffer des gelöteten IC 4050D die obligatorische Pegelanpassung (5 V → 3,3 V). Insgesamt müssen nur 5 Drähte gelötet werden. Beachten Sie, dass die TXD-Ausgänge parallel geschaltet sind, was nicht empfohlen wird. Auf Arduino-Karten ist der serielle Chip aus diesem Grund über 1 kOhm-Widerstände mit dem Haupt-IC verbunden. Dies ist im Melzi-Board-Design nicht vorhanden.

Verbindung über Bluetooth

Sobald Sie Ihre BT-Geräte eingerichtet haben, können Sie sie koppeln, aus der Dropdown-Liste auswählen und Ihren RepRap wie gewohnt steuern.

Extrusion Ventilator

Zum Drucken von Brücken ist ein Extrusionsventilator obligatorisch. Alle rahmenbasierten Lösungen kühlten das Filament nicht in allen Dimensionen. Je nach Objekt ist das Ergebnis nicht wie erwartet. Dafür habe ich auf einen auf X-Carriage montierten Radialventilator umgestellt. Die Lösung wird hier beschrieben Thingiverse.


Radialventilator: Y.S.TECH BD125015MB 12V/0.125A

Melzi PCB Halter

Um den Druckbereich (Z-Maß) zu erweitern, habe ich die Leiterplatte oben positioniert. Der Original Leiterplattenhalter (4 Stück) wurde wiederverwendet. Die Platine ist auf einem 1,5 mm dicken lasergeschnitten Platte montiert: Kraftplex.

Melzi LCD Controller

I2C -> LCD converter (LMC1602)

Setup Druckbett

Item X Y Z Unit
max values 143 144 45 mm
bed size 140 140 - mm
print area 100 100 45 mm
offset bed 3 4 0 mm
offset print area 23 24 0 mm

CURA Setup

Init file:

huxley.ini
[profile]
layer_height = 0.1
wall_thickness = 0.9
retraction_enable = True
solid_layer_thickness = 0.6
fill_density = 20
print_speed = 50
print_temperature = 200
print_temperature2 = 0
print_temperature3 = 0
print_temperature4 = 0
print_temperature5 = 0
print_bed_temperature = 70
support = None
platform_adhesion = None
support_dual_extrusion = Both
wipe_tower = False
wipe_tower_volume = 15
ooze_shield = False
filament_diameter = 1.75
filament_diameter2 = 0
filament_diameter3 = 0
filament_diameter4 = 0
filament_diameter5 = 0
filament_flow = 100.0
nozzle_size = 0.3
retraction_speed = 40.0
retraction_amount = 4.5
retraction_dual_amount = 16.5
retraction_min_travel = 1.5
retraction_combing = All
retraction_minimal_extrusion = 0.02
retraction_hop = 0.0
bottom_thickness = 0.2
layer0_width_factor = 100
object_sink = 0.0
overlap_dual = 0.15
travel_speed = 150.0
bottom_layer_speed = 20
infill_speed = 80
solidarea_speed = 15
inset0_speed = 30
insetx_speed = 60
cool_min_layer_time = 5
fan_enabled = True
skirt_line_count = 1
skirt_gap = 3.0
skirt_minimal_length = 150.0
fan_full_height = 0.5
fan_speed = 100
fan_speed_max = 100
cool_min_feedrate = 10
cool_head_lift = False
solid_top = True
solid_bottom = True
fill_overlap = 15
perimeter_before_infill = False
support_type = Lines
support_angle = 60
support_fill_rate = 15
support_xy_distance = 0.7
support_z_distance = 0.15
spiralize = False
simple_mode = False
brim_line_count = 20
raft_margin = 5.0
raft_line_spacing = 3.0
raft_base_thickness = 0.3
raft_base_linewidth = 1.0
raft_interface_thickness = 0.27
raft_interface_linewidth = 0.4
raft_airgap_all = 0.0
raft_airgap = 0.22
raft_surface_layers = 2
raft_surface_thickness = 0.27
raft_surface_linewidth = 0.4
fix_horrible_union_all_type_a = True
fix_horrible_union_all_type_b = False
fix_horrible_use_open_bits = False
fix_horrible_extensive_stitching = False
plugin_config = (lp1
	(dp2
	S'params'
	p3
	(dp4
	S'xshift'
	p5
	V23.0
	p6
	sS'zshift'
	p7
	V0.0
	p8
	sS'yshift'
	p9
	V24.0
	p10
	ssS'filename'
	p11
	S'XYZshift.py'
	p12
	sa.
object_center_x = -1
object_center_y = -1
 
[alterations]
start.gcode = ;Sliced at: {day} {date} {time}
	;Basic settings: Layer height: {layer_height} Walls: {wall_thickness} Fill: {fill_density}
	;Print time: {print_time}
	;Filament used: {filament_amount}m {filament_weight}g
	;Filament cost: {filament_cost}
	;M190 S{print_bed_temperature} ;Uncomment to add your own bed temperature line
	;M109 S{print_temperature} ;Uncomment to add your own temperature line
	G21        ;metric values
	G90        ;absolute positioning
	M82        ;set extruder to absolute mode
	M107       ;start with the fan off
	G28 X0 Y0  ;move X/Y to min endstops
	G28 Z0     ;move Z to min endstops
	G1 Z15.0 F{travel_speed} ;move the platform down 15mm
	G92 E0                  ;zero the extruded length
	G1 F200 E3              ;extrude 3mm of feed stock
	G92 E0                  ;zero the extruded length again
	G1 F{travel_speed}
	;Put printing message on LCD screen
	M117 Printing...
end.gcode = ;End GCode
	M104 S0                     ;extruder heater off
	M140 S0                     ;heated bed heater off (if you have it)
	G91                                    ;relative positioning
	G1 E-1 F300                            ;retract the filament a bit before lifting the nozzle, to release some of the pressure
	G1 Z+0.5 E-5 X-20 Y-20 F{travel_speed} ;move Z up a bit and retract filament even more
	G28 X0 Y0                              ;move X/Y to min endstops, so the head is out of the way
	M84                         ;steppers off
	G90                         ;absolute positioning
	;{profile_string}
start2.gcode = ;Sliced at: {day} {date} {time}
	;Basic settings: Layer height: {layer_height} Walls: {wall_thickness} Fill: {fill_density}
	;Print time: {print_time}
	;Filament used: {filament_amount}m {filament_weight}g
	;Filament cost: {filament_cost}
	;M190 S{print_bed_temperature} ;Uncomment to add your own bed temperature line
	;M104 S{print_temperature} ;Uncomment to add your own temperature line
	;M109 T1 S{print_temperature2} ;Uncomment to add your own temperature line
	;M109 T0 S{print_temperature} ;Uncomment to add your own temperature line
	G21        ;metric values
	G90        ;absolute positioning
	M107       ;start with the fan off
	G28 X0 Y0  ;move X/Y to min endstops
	G28 Z0     ;move Z to min endstops
	G1 Z15.0 F{travel_speed} ;move the platform down 15mm
	T1                      ;Switch to the 2nd extruder
	G92 E0                  ;zero the extruded length
	G1 F200 E10             ;extrude 10mm of feed stock
	G92 E0                  ;zero the extruded length again
	G1 F200 E-{retraction_dual_amount}
	T0                      ;Switch to the first extruder
	G92 E0                  ;zero the extruded length
	G1 F200 E10             ;extrude 10mm of feed stock
	G92 E0                  ;zero the extruded length again
	G1 F{travel_speed}
	;Put printing message on LCD screen
	M117 Printing...
end2.gcode = ;End GCode
	M104 T0 S0                     ;extruder heater off
	M104 T1 S0                     ;extruder heater off
	M140 S0                     ;heated bed heater off (if you have it)
	G91                                    ;relative positioning
	G1 E-1 F300                            ;retract the filament a bit before lifting the nozzle, to release some of the pressure
	G1 Z+0.5 E-5 X-20 Y-20 F{travel_speed} ;move Z up a bit and retract filament even more
	G28 X0 Y0                              ;move X/Y to min endstops, so the head is out of the way
	M84                         ;steppers off
	G90                         ;absolute positioning
	;{profile_string}
start3.gcode = ;Sliced at: {day} {date} {time}
	;Basic settings: Layer height: {layer_height} Walls: {wall_thickness} Fill: {fill_density}
	;Print time: {print_time}
	;Filament used: {filament_amount}m {filament_weight}g
	;Filament cost: {filament_cost}
	;M190 S{print_bed_temperature} ;Uncomment to add your own bed temperature line
	;M104 S{print_temperature} ;Uncomment to add your own temperature line
	;M109 T1 S{print_temperature2} ;Uncomment to add your own temperature line
	;M109 T0 S{print_temperature} ;Uncomment to add your own temperature line
	G21        ;metric values
	G90        ;absolute positioning
	M107       ;start with the fan off
	G28 X0 Y0  ;move X/Y to min endstops
	G28 Z0     ;move Z to min endstops
	G1 Z15.0 F{travel_speed} ;move the platform down 15mm
	T2                      ;Switch to the 3rd extruder
	G92 E0                  ;zero the extruded length
	G1 F200 E10             ;extrude 10mm of feed stock
	G92 E0                  ;zero the extruded length again
	G1 F200 E-{retraction_dual_amount}
	T1                      ;Switch to the 2nd extruder
	G92 E0                  ;zero the extruded length
	G1 F200 E10             ;extrude 10mm of feed stock
	G92 E0                  ;zero the extruded length again
	G1 F200 E-{retraction_dual_amount}
	T0                      ;Switch to the first extruder
	G92 E0                  ;zero the extruded length
	G1 F200 E10             ;extrude 10mm of feed stock
	G92 E0                  ;zero the extruded length again
	G1 F{travel_speed}
	;Put printing message on LCD screen
	M117 Printing...
end3.gcode = ;End GCode
	M104 T0 S0                     ;extruder heater off
	M104 T1 S0                     ;extruder heater off
	M104 T2 S0                     ;extruder heater off
	M140 S0                     ;heated bed heater off (if you have it)
	G91                                    ;relative positioning
	G1 E-1 F300                            ;retract the filament a bit before lifting the nozzle, to release some of the pressure
	G1 Z+0.5 E-5 X-20 Y-20 F{travel_speed} ;move Z up a bit and retract filament even more
	G28 X0 Y0                              ;move X/Y to min endstops, so the head is out of the way
	M84                         ;steppers off
	G90                         ;absolute positioning
	;{profile_string}
start4.gcode = ;Sliced at: {day} {date} {time}
	;Basic settings: Layer height: {layer_height} Walls: {wall_thickness} Fill: {fill_density}
	;Print time: {print_time}
	;Filament used: {filament_amount}m {filament_weight}g
	;Filament cost: {filament_cost}
	;M190 S{print_bed_temperature} ;Uncomment to add your own bed temperature line
	;M104 S{print_temperature} ;Uncomment to add your own temperature line
	;M109 T2 S{print_temperature2} ;Uncomment to add your own temperature line
	;M109 T1 S{print_temperature2} ;Uncomment to add your own temperature line
	;M109 T0 S{print_temperature} ;Uncomment to add your own temperature line
	G21        ;metric values
	G90        ;absolute positioning
	M107       ;start with the fan off
	G28 X0 Y0  ;move X/Y to min endstops
	G28 Z0     ;move Z to min endstops
	G1 Z15.0 F{travel_speed} ;move the platform down 15mm
	T3                      ;Switch to the 4th extruder
	G92 E0                  ;zero the extruded length
	G1 F200 E10             ;extrude 10mm of feed stock
	G92 E0                  ;zero the extruded length again
	G1 F200 E-{retraction_dual_amount}
	T2                      ;Switch to the 3rd extruder
	G92 E0                  ;zero the extruded length
	G1 F200 E10             ;extrude 10mm of feed stock
	G92 E0                  ;zero the extruded length again
	G1 F200 E-{retraction_dual_amount}
	T1                      ;Switch to the 2nd extruder
	G92 E0                  ;zero the extruded length
	G1 F200 E10             ;extrude 10mm of feed stock
	G92 E0                  ;zero the extruded length again
	G1 F200 E-{retraction_dual_amount}
	T0                      ;Switch to the first extruder
	G92 E0                  ;zero the extruded length
	G1 F200 E10             ;extrude 10mm of feed stock
	G92 E0                  ;zero the extruded length again
	G1 F{travel_speed}
	;Put printing message on LCD screen
	M117 Printing...
end4.gcode = ;End GCode
	M104 T0 S0                     ;extruder heater off
	M104 T1 S0                     ;extruder heater off
	M104 T2 S0                     ;extruder heater off
	M104 T3 S0                     ;extruder heater off
	M140 S0                     ;heated bed heater off (if you have it)
	G91                                    ;relative positioning
	G1 E-1 F300                            ;retract the filament a bit before lifting the nozzle, to release some of the pressure
	G1 Z+0.5 E-5 X-20 Y-20 F{travel_speed} ;move Z up a bit and retract filament even more
	G28 X0 Y0                              ;move X/Y to min endstops, so the head is out of the way
	M84                         ;steppers off
	G90                         ;absolute positioning
	;{profile_string}
support_start.gcode = 
support_end.gcode = 
cool_start.gcode = 
cool_end.gcode = 
replace.csv = 
preswitchextruder.gcode = ;Switch between the current extruder and the next extruder, when printing with multiple extruders.
	;This code is added before the T(n)
postswitchextruder.gcode = ;Switch between the current extruder and the next extruder, when printing with multiple extruders.
	;This code is added after the T(n)
de/tech/3d_huxley.txt · Zuletzt geändert: 2021/01/19 06:42 von 127.0.0.1