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jonsag / Marlin-3D-Printer-Firmware

Marlin firmware for my Geeetech i3 Pro B with GT2560A+ board
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Marlin 3D Printer Firmware

Everything in this repo is for Geeetech I3 Pro B

Refer to .md file for the Marlin version you want to use.

Read that file carefully, PLEASE!

Marlin firmware for my Geeetech i3 Pro B with GT2560A+ board

Includes BLTouch, T8 lead screws and RepRap Discount Full Graphic Smart Controller.

I recommend using VSCode for compiling and uploading to printer.

Compilation

I use VS Code with PlatformIO and Auto Build Marlin for compiling, but you can also do this with Arduino IDE.

VS Code/PlatformIO instructions [here](<./VSCode, Installation, Compiling and Uploading.md>).

Testing and calibrating

View current settings and parameters

M503

BLTouch

Set Z offset

View current offset

M851 ; view current Z offset

Send: M851
Recv: echo:Probe Z Offset: -0.95
Recv: ok

Heat up bed

M140 S75 ; set bed temp to 75

Home all axis

G28 ; home all axis

Disable software end stops
M211 S0 ; disable software end stops

Do the paper test and bring down Z slowly.
Note the Z value.

M114 ; get current position

Set new offset

M851 Z-0.8

Send: M851 Z-0.8
Recv: echo:Probe Z Offset: -0.80
Recv: ok

Save new value to EEPROM

M500

You can also adjust the Z offset during prints.
Double click the knob and adjust the offset until it's OK.
Then insert new value as above.

Higher value -> smaller distance from bed

Sensor test

M280 P0 S10 ; pushes the pin down
M280 P0 S90 ; pulls the pin up
M280 P0 S120 ; self test – keeps going until you do pin up/down or release alarm
M280 P0 S160 ; release alarm

PID Tuning

Check current settings

M503 ; print all settings stored in eeprom 

...
Recv: echo:; Hotend PID:
Recv: echo:  M301 P23.12 I1.72 D77.65
...

Hotend PID Tuning

Start parts cooler fan

M106 S255 ; set parts fan to 100% 

Send: M106 S255
Recv: ok

Start tuning

M303 E0 S245 C8 ; tune at 245 degrees 8 times 

...
Recv: PID Autotune finished! Put the last Kp, Ki and Kd constants from below into Configuration.h
Recv: #define DEFAULT_Kp 17.06
Recv: #define DEFAULT_Ki 1.05
Recv: #define DEFAULT_Kd 69.18
...

Enter new values

M301 P17.06 I1.05 D69.18 ; set hotend PID values 

Send: M301 P17.06 I1.05 D69.18
Recv: ok

Save to EEPROM

M500 ; store to eeprom 

Send: M500
Recv: echo:Settings Stored (627 bytes; crc 55228)
Recv: ok

Stop parts cooler fan

M106 S0 ; turn off parts fan

Bed PID Tuning

Start tuning

M303 E-1 S75 C8 ; tune at 75 degrees 8 times

...
Recv: #define DEFAULT_bedKp 49.22
Recv: #define DEFAULT_bedKi 9.39
Recv: #define DEFAULT_bedKd 172.04
...

Enter new values

M304 P49.22 I9.39 D172.04 ; set bed PID values 

Recv: ok

Save to EEPROM

M500 ; store to eeprom

Set temperatures

Set extruder temperature

M104 S205 ; set temp for default extruder to 205 degrees 

Send: M104 S205
Recv: ok

Set bed temperature

M140 S65 ; set bed temp to 65 degrees

Send: M140 S65
Recv: ok
...

Steps/mm

Show current settings (steps per mm etc)

M501

echo:V47 stored settings retrieved (614 bytes; crc 29566)
echo:  G21    ; Units in mm
echo:  M149 C ; Units in Celsius

echo:Filament settings: Disabled
echo:  M200 D1.75
echo:  M200 D0
echo:Steps per unit:
echo:  M92 X81.50 Y81.50 Z400.69 E94.00
echo:Maximum feedrates (units/s):
echo:  M203 X400.00 Y400.00 Z2.00 E45.00
echo:Maximum Acceleration (units/s2):
echo:  M201 X4000 Y4000 Z40 E4000
echo:Acceleration (units/s2): P<print_accel> R<retract_accel> T<travel_accel>
echo:  M204 P3000.00 R3000.00 T3000.00
echo:Advanced: S<min_feedrate> T<min_travel_feedrate> B<min_segment_time_us> X<max_xy_jerk> Z<max_z_jerk> E<max_e_jerk>
echo:  M205 S0.00 T0.00 B20000 X10.00 Y10.00 Z0.30 E5.00
echo:Home offset:
echo:  M206 X0.00 Y0.00 Z0.00
echo:Auto Bed Leveling:
echo:  M420 S0
echo:Material heatup parameters:
echo:  M145 S0 H180 B70 F0
echo:  M145 S1 H215 B105 F0
echo:PID settings:
echo:  M301 P22.06 I1.06 D114.78
echo:Z-Probe Offset (mm):
echo:  M851 Z-0.61

Set X/Y center

Home X and Y axes

G28 X Y

Set extruder at 0:0

G1 X0 Y0

Set extruder at bed center

G1 X95 Y96

if bed size is set to 190x192mm in Configuration.h in Marlin firmware 

// The size of the print bed
#define X_BED_SIZE 190
#define Y_BED_SIZE 192

Compensate with 

#define X_MIN_POS 0
#define Y_MIN_POS 0
...
#define X_MAX_POS X_BED_SIZE
#define Y_MAX_POS Y_BED_SIZE

Homing and leveling

G28 ; home all axes G29 ; do bed leveling

Set skew factor

Adapted from https://github.com/MarlinFirmware/Configurations/blob/import-2.0.x/config/examples/Geeetech/Prusa%20i3%20Pro%20B/bltouch/README.md

The skew factor must be adjusted for each printer:

First, uncomment #define XY_SKEW_FACTOR 0.0, if commented 

  #define XY_SKEW_FACTOR 0.0

Compile and upload the firmware.
Then, print YACS (Yet Another Calibration Square).
Hint: scale it considering a margin for brim (if used). The larger, the better to make error measurements.
Measure the printed part according to the comments in the example configuration file, and set XY_DIAG_AC, XY_DIAG_BD and Y_SIDE_AD. 

  #define XY_DIAG_AC 282.8427124746
  #define XY_DIAG_BD 282.8427124746
  #define XY_SIDE_AD 200

Comment #define XY_SKEW_FACTOR 0.0 again. 

  //#define XY_SKEW_FACTOR 0.0

Compile and upload again.

Permissions

Check your permissions.
You need to belong to the groups tty and dialout to be able to write to the tty/USBx.

Run

$ groups | grep ' tty ' && echo -e "\nGreat! \nYou are a member of 'tty'" || echo -e "\nError: \nYou are not a member of the group 'tty'. \n\nCorrect with 'sudo usermod -a -G tty $USER'"

and

$ groups | grep ' dialout ' && echo -e "\nGreat! \nYou are a member of 'dialout'" || echo -e "\nError: \nYou are not a member of the group 'dialout'. \n\nCorrect with 'sudo usermod -a -G dialout $USER'"

to check.

If you had to add yourself to any group, you must reboot to join the groups.

$ sudo reboot

avrdude

Install avrdude if not installed.

$ sudo apt install avrdude

Upload binary

$ avrdude -v -q -p m2560 -c wiring -P /dev/ttyUSB0 -D -U flash:w:/path/to/image.hex:i