3D Printer

Hardware

Anet A8 Desktop 3D Printer

• Overall, an excellent price-performance ratio. Relatively quickly to assemble. Good printing output, tested only with PLA so far. Easy to use software.

• Power
  • [Switch]
  • [Heated Bed Power Expansion Module]

• Printing Area
  • [Plastic Hot Bed Sticker]
    • Or
  • [Heating Bed Reprap Toughened Glass Plate]

• Spare part
  • [Belt S2M GT2 Belt For 3D Printer]

• Improvement:
  • LJ18A3-8-Z/BX-5V Captor Autoleveling
  • [Y Axis Rework]
  • [Corner]

Firmware

• Arduino IDE 1.8.3
• Marlin-1.1.8
  • http://marlinfw.org/
  • Calculate Extruder thermistor PID

M303 E0 S220 C8
...
...
Recv: PID Autotune finished! Put the last Kp, Ki and Kd constants from below into Configuration.h
Recv: #define  DEFAULT_Kp 15.42
Recv: #define  DEFAULT_Ki 0.65
Recv: #define  DEFAULT_Kd 91.61

• • configuration.h file change
    • configuration.h Marlin configuration.h
    • Baud Rate

//###Nr001 #define BAUDRATE 250000
#define BAUDRATE 115200

• • • MotherBoard

#ifndef MOTHERBOARD
  //###Nr001 #define MOTHERBOARD BOARD_RAMPS_14_EFB
  #define MOTHERBOARD BOARD_ANET_10
#endif

• • • Filament

//###Nr001#define DEFAULT_NOMINAL_FILAMENT_DIA 3.0
#define DEFAULT_NOMINAL_FILAMENT_DIA 1.75

SoftWare

Cura

Setup

Machine Setup

• Printer Setting

x: 220
Y: 220
Z: 220

• Print Head Setting

X min: 0
Y min: 0
X max: 0
y max: 0

• Ganty height: 0
• Nozzle size: .04

• Machine Center is Zero: Not Selected
• Heated Bed  : Select

• Start GCode

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 G29 ;Autoleveling G1 Z15.0 F9000 ;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 F9000 M117 Printing...

* End GCode
<pre>
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 F9000 ;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

OctoPrint

Switch On/Off

• Add switch on off

/home/pi/.octoprint/config.yaml

system:
  actions:
  - action: led on
    command: gpio -g write 18 1
    name: Turn on the led
  - action: led off
    command: gpio -g write 18 0
    confirm: You are about to turn off the led.
    name: Turn off the led

Stream On/Off

• Add switch on off

/home/pi/.octoprint/config.yaml

system:
  actions:
  - action: streamon
    command: /home/pi/scripts/webcam start
    confirm: false
    name: Start video stream
  - action: streamoff
    command: /home/pi/scripts/webcam stop
    confirm: false
    name: Stop video stream