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bjbsquared edited this page Aug 28, 2020 · 2 revisions

Firmware

Starting with Marlin 2.0.5.3 from the Github

Hardware Settings

Motherboard

Note: Find board name in boards.h and use that for the define value

from src/boards.h

#define BOARD_TANGO                   1148  // BIQU Tango V1
// Choose the name from boards.h that matches your setup
#ifndef MOTHERBOARD
    #define MOTHERBOARD BOARD_TANGO 
#endif

Core XY

// Uncomment one of these options to enable CoreXY, CoreXZ, or CoreYZ kinematics
// either in the usual order or reversed
#define COREXY //
//#define COREXZ

Stepper Drivers

#define X_DRIVER_TYPE  A4988 
#define Y_DRIVER_TYPE  A4988

Controller Board

Note: The LCD was readable but messed up.. like noise was getting into it. It turned out to be a timing issue. Found the solution in the comments of this YouTube video.

// RepRapDiscount FULL GRAPHIC Smart Controller
// http://reprap.org/wiki/RepRapDiscount_Full_Graphic_Smart_Controller
//
#define REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER 
#define ST7920_DELAY_1 DELAY_NS(0) 
#define ST7920_DELAY_2 DELAY_NS(250) 
#define ST7920_DELAY_3 DELAY_NS(250)

Servo

Servo command

G4 P50; Needed to finish previous commands before servo
M280 P0 S<servoAngle>
G4 P50;; Needed for servo settling time

Enable Servo

/**
 * R/C SERVO support
 * Sponsored by TrinityLabs, Reworked by codexmas
 */

/**
 * Number of servos
 *
 * For some servo-related options NUM_SERVOS will be set automatically.
 * Set this manually if there are extra servos needing manual control.
 * Leave undefined or set to 0 to entirely disable the servo subsystem.
 */
#define NUM_SERVOS 1 // Servo index starts with 0 for M280 command

// (ms) Delay  before the next move will start, to give the servo time to reach its target angle.
// 300ms is a good value but you can try less delay.
// If the servo can't reach the requested position, increase it.
#define SERVO_DELAY { 300 }

// Only power servos during movement, otherwise leave off to prevent jitter
//#define DEACTIVATE_SERVOS_AFTER_MOVE

// Allow servo angle to be edited and saved to EEPROM
//#define EDITABLE_SERVO_ANGLES

pins/ramps/pins_TANGO.h

No mention of servos here but includes RUMBA pins definitions

#include "pins_RUMBA.h"

pins/ramps/pins_RUMBA.h

//
// Servos
//
#define SERVO0_PIN                             5

Pin 5 of the ATMEGA2560 is Called PWM2 on the schematic and goes to Auxilary IO connector EXP3 pin 6.

No Extruders

At Extruders = 1

  • Sketch uses 109734 bytes (43%) of program storage space. Maximum is 253952 bytes. Global variables use 4353 bytes (53%) of dynamic memory, leaving 3839 bytes for local variables. Maximum is 8192 bytes.

Making Extruders = 0

// This defines the number of extruders
// :[1, 2, 3, 4, 5, 6, 7, 8]
#define EXTRUDERS 0

Sketch uses 94528 bytes (37%) of program storage space. Maximum is 253952 bytes. Global variables use 4246 bytes (51%) of dynamic memory, leaving 3946 bytes for local variables. Maximum is 8192 bytes.

Stepper Motors

The Y axis was reversed from my plans so I tried this

#define INVERT_Y_DIR FALSE

This didn't work. Now the axis are swapped but they go in the proper direction Changed it back and swapped motor posistions.

#define INVERT_Y_DIR TRUE

This made proper axis both with inverted direction.

Reversed connectors in place. SUCCESS!!

Calibration

No adjustment required from default values.

/**
 * Default Axis Steps Per Unit (steps/mm)
 * Override with M92
 *                                      X, Y, Z, E0 [, E1[, E2...]]
 */
#define DEFAULT_AXIS_STEPS_PER_UNIT   { 80, 80, 4000, 500 }

Encoder Direction

I want the same direction as my Prusa 3D printer

/**
 * Encoder Direction Options
 *
 * Test your encoder's behavior first with both options disabled.
 *
 *  Reversed Value Edit and Menu Nav? Enable REVERSE_ENCODER_DIRECTION.
 *  Reversed Menu Navigation only?    Enable REVERSE_MENU_DIRECTION.
 *  Reversed Value Editing only?      Enable BOTH options.
 */
 #define REVERSE_ENCODER_DIRECTION

Travel Limits

// The size of the print bed
#define X_BED_SIZE 380
#define Y_BED_SIZE 380

Custom Menues

  • Pen Set - Raise the pen holder mid way to mount pen.
  • Pen Up - Raise the pen holder all the way to be ready for printing.
  • Pen Down - Lower the pen holder all the way to test engagement.
/**
 * User-defined menu items that execute custom GCode
 */
#define CUSTOM_USER_MENUS
#if ENABLED(CUSTOM_USER_MENUS)
  //#define CUSTOM_USER_MENU_TITLE "Custom Commands"
  //#define USER_SCRIPT_DONE "M117 User Script Done"
  
  #define USER_DESC_1 "Pen Set"
  #define USER_GCODE_1 "M280 P0 S50"

  #define USER_DESC_2 "Pen Up" 
  #define USER_GCODE_2 "M280 P0 S70" 

  #define USER_DESC_3 "Pen Down" 
  #define USER_GCODE_3 "M280 P0 S0"

#endif

Bezier Curves Enabled

// Support for G5 with XYZE destination and IJPQ offsets. Requires ~2666 bytes.

#define BEZIER_CURVE_SUPPORT

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