Wiring thermocouple to 1.4 turbo

[KoziolAd]

I apologize if this isn't the correct place to ask this - new to github

Would one be able to use a thermocouple through the adafruit board wired this same way?
Does PT100- analog = a thermocouple?

Thanks!

[GadgetAngel]

I apologize if this isn't the correct place to ask this - new to github

Would one be able to use a thermocouple through the adafruit board wired this same way?
Does PT100- analog = a thermocouple?

Thanks!

The MAX31865 is for the PT100 sensor. You can not use the MAX31865 with a K-type Thermocouple.

The MAX31855 by Adafruit can be used with a K-Type Thermocouple. If you go to the Adafruit.com website and search for MAX31855 you will see the board description.

If you look at my manual on the https://github.com/GadgetAngel/SKR-PRO-V1.1-Stepper-Driver-Jumper-Configuration-Manual, APPENDIX Q and APPENDIX R you will see how to connect up the MAX31855 using the SKR PRO V1.1 board. I know you are using the SKR V1.4 Turbo but to understand what PIN to use on the SKR V1.4 Turbo board look for SPI pins on the SKR V1.4 Turbo board. You might have to use the EXP1 connector.

The MAX31865 uses Vin, GND, CLK, SDO, and SDI signals on the board (5 lines) while the MAX31855 uses Vin, GND, DO, and CLK signals on the board (4 lines).

The GUIDE : https://github.com/GadgetAngel/MAX31865-SKR-V1-4-TURBO-GUIDE shows how to connect up the MAX31865 board to the SKR V1.4 Turbo but you can use it to show you how to connect the MAX31855 board to the SKR V1.4 Turbo board.

The MAX31865 signal's Vin = MAX31855 signal's Vin
The MAX31865 signal's GND = MAX31855 signal's GND
The MAX31865 signal's CLK = MAX31855 signal's CLK
The MAX31865 signal's SDO = MAX31855 signal's DO

The following link describes the different setting that can be used in Marlin 2.0.8.1 : MarlinFirmware/Marlin#20447 (comment)

(In section labeled "[features]" of file ".../Marlin/ini/features.ini"), instead of using the MAX6675_._IS_MAX31865 as stated in Item #7 in https://github.com/GadgetAngel/MAX31865-SKR-V1-4-TURBO-GUIDE comment out the TEMP_._IS_MAX31865 line by adding a # sign at the very beginning of the line in the file ".../Marlin/ini/features.ini".

Now, add a new line, below the commented out line, in file ".../Marlin/ini/features.ini" and type the following:
TEMP_.+_IS_MAX31855 = https://github.com/GadgetAngel/Adafruit-MAX31855-V1.0.3-Mod-M.git in ".../Marlin/ini/features.ini" file.

So the ".../Marlin/ini/features.ini" file should look like this:

[features]
YHCB2004                               = red-scorp/LiquidCrystal_AIP31068@^1.0.4, red-scorp/SoftSPIB@^1.1.1
HAS_TFT_LVGL_UI                        = lvgl=https://github.com/makerbase-mks/LVGL-6.1.1-MKS/archive/master.zip
                                         src_filter=+<src/lcd/extui/mks_ui>
                                         extra_scripts=download_mks_assets.py
POSTMORTEM_DEBUGGING                   = src_filter=+<src/HAL/shared/cpu_exception> +<src/HAL/shared/backtrace>
                                         build_flags=-funwind-tables
MKS_WIFI_MODULE                        = QRCode=https://github.com/makerbase-mks/QRCode/archive/master.zip
HAS_TRINAMIC_CONFIG                    = TMCStepper@~0.7.1
                                         src_filter=+<src/feature/tmc_util.cpp> +<src/module/stepper/trinamic.cpp> +<src/gcode/feature/trinamic/M122.cpp> +<src/gcode/feature/trinamic/M906.cpp> +<src/gcode/feature/trinamic/M911-M914.cpp>
HAS_STEALTHCHOP                        = src_filter=+<src/gcode/feature/trinamic/M569.cpp>
SR_LCD_3W_NL                           = SailfishLCD=https://github.com/mikeshub/SailfishLCD/archive/master.zip
HAS_MOTOR_CURRENT_I2C                  = SlowSoftI2CMaster
                                         src_filter=+<src/feature/digipot>
HAS_TMC26X                             = TMC26XStepper=https://github.com/trinamic/TMC26XStepper/archive/master.zip
                                         src_filter=+<src/module/TMC26X.cpp>
HAS_L64XX                              = Arduino-L6470@0.8.0
                                         src_filter=+<src/libs/L64XX> +<src/module/stepper/L64xx.cpp> +<src/gcode/feature/L6470> +<src/HAL/shared/HAL_spi_L6470.cpp>
NEOPIXEL_LED                           = adafruit/Adafruit NeoPixel@~1.8.0
                                         src_filter=+<src/feature/leds/neopixel.cpp>
#TEMP_.+_IS_MAX31865                    = Adafruit MAX31865 library@~1.1.0
TEMP_.+_IS_MAX31855                    = https://github.com/GadgetAngel/Adafruit-MAX31855-V1.0.3-Mod-M.git
USES_LIQUIDCRYSTAL                     = fmalpartida/LiquidCrystal@1.5.0
USES_LIQUIDCRYSTAL_I2C                 = marcoschwartz/LiquidCrystal_I2C@1.1.4
USES_LIQUIDTWI2                        = LiquidTWI2@1.2.7
HAS_WIRED_LCD                          = src_filter=+<src/lcd/lcdprint.cpp>
HAS_MARLINUI_HD44780                   = src_filter=+<src/lcd/HD44780>
HAS_MARLINUI_U8GLIB                    = U8glib-HAL@~0.4.4
                                         src_filter=+<src/lcd/dogm>
HAS_(FSMC|SPI|LTDC)_TFT                = src_filter=+<src/HAL/STM32/tft> +<src/HAL/STM32F1/tft> +<src/lcd/tft_io>
HAS_FSMC_TFT                           = src_filter=+<src/HAL/STM32/tft/tft_fsmc.cpp> +<src/HAL/STM32F1/tft/tft_fsmc.cpp>
HAS_SPI_TFT                            = src_filter=+<src/HAL/STM32/tft/tft_spi.cpp> +<src/HAL/STM32F1/tft/tft_spi.cpp>
I2C_EEPROM                             = src_filter=+<src/HAL/shared/eeprom_if_i2c.cpp>
SOFT_I2C_EEPROM                        = SlowSoftI2CMaster, SlowSoftWire=https://github.com/felias-fogg/SlowSoftWire/archive/master.zip
SPI_EEPROM                             = src_filter=+<src/HAL/shared/eeprom_if_spi.cpp>
HAS_GRAPHICAL_TFT                      = src_filter=+<src/lcd/tft>
DWIN_CREALITY_LCD                      = src_filter=+<src/lcd/dwin>
IS_TFTGLCD_PANEL                       = src_filter=+<src/lcd/TFTGLCD>
HAS_TOUCH_BUTTONS                      = src_filter=+<src/lcd/touch/touch_buttons.cpp>
HAS_LCD_MENU                           = src_filter=+<src/lcd/menu>
HAS_GAMES                              = src_filter=+<src/lcd/menu/game/game.cpp>
MARLIN_BRICKOUT                        = src_filter=+<src/lcd/menu/game/brickout.cpp>
MARLIN_INVADERS                        = src_filter=+<src/lcd/menu/game/invaders.cpp>
MARLIN_MAZE                            = src_filter=+<src/lcd/menu/game/maze.cpp>
MARLIN_SNAKE                           = src_filter=+<src/lcd/menu/game/snake.cpp>
HAS_MENU_BACKLASH                      = src_filter=+<src/lcd/menu/menu_backlash.cpp>
HAS_MENU_BED_CORNERS                   = src_filter=+<src/lcd/menu/menu_bed_corners.cpp>
LCD_BED_LEVELING                       = src_filter=+<src/lcd/menu/menu_bed_leveling.cpp>
HAS_MENU_CANCELOBJECT                  = src_filter=+<src/lcd/menu/menu_cancelobject.cpp>
HAS_MENU_DELTA_CALIBRATE               = src_filter=+<src/lcd/menu/menu_delta_calibrate.cpp>
HAS_MENU_FILAMENT                      = src_filter=+<src/lcd/menu/menu_filament.cpp>
LCD_INFO_MENU                          = src_filter=+<src/lcd/menu/menu_info.cpp>
HAS_MENU_JOB_RECOVERY                  = src_filter=+<src/lcd/menu/menu_job_recovery.cpp>
HAS_MULTI_LANGUAGE                     = src_filter=+<src/lcd/menu/menu_language.cpp>
HAS_MENU_LED                           = src_filter=+<src/lcd/menu/menu_led.cpp>
HAS_MENU_MEDIA                         = src_filter=+<src/lcd/menu/menu_media.cpp>
HAS_MENU_MIXER                         = src_filter=+<src/lcd/menu/menu_mixer.cpp>
HAS_MENU_MMU2                          = src_filter=+<src/lcd/menu/menu_mmu2.cpp>
HAS_MENU_PASSWORD                      = src_filter=+<src/lcd/menu/menu_password.cpp>
HAS_MENU_POWER_MONITOR                 = src_filter=+<src/lcd/menu/menu_power_monitor.cpp>
HAS_MENU_CUTTER                        = src_filter=+<src/lcd/menu/menu_spindle_laser.cpp>
HAS_MENU_TEMPERATURE                   = src_filter=+<src/lcd/menu/menu_temperature.cpp>
HAS_MENU_TMC                           = src_filter=+<src/lcd/menu/menu_tmc.cpp>
HAS_MENU_TOUCH_SCREEN                  = src_filter=+<src/lcd/menu/menu_touch_screen.cpp>
HAS_MENU_TRAMMING                      = src_filter=+<src/lcd/menu/menu_tramming.cpp>
HAS_MENU_UBL                           = src_filter=+<src/lcd/menu/menu_ubl.cpp>
ANYCUBIC_LCD_CHIRON                    = src_filter=+<src/lcd/extui/anycubic_chiron>
ANYCUBIC_LCD_I3MEGA                    = src_filter=+<src/lcd/extui/anycubic_i3mega>
HAS_DGUS_LCD                           = src_filter=+<src/lcd/extui/dgus>
DGUS_LCD_UI_FYSETC                     = src_filter=+<src/lcd/extui/dgus/fysetc>
DGUS_LCD_UI_HIPRECY                    = src_filter=+<src/lcd/extui/dgus/hiprecy>
DGUS_LCD_UI_MKS                        = src_filter=+<src/lcd/extui/dgus/mks>
DGUS_LCD_UI_ORIGIN                     = src_filter=+<src/lcd/extui/dgus/origin>
EXTUI_EXAMPLE                          = src_filter=+<src/lcd/extui/example>
TOUCH_UI_FTDI_EVE                      = src_filter=+<src/lcd/extui/ftdi_eve_touch_ui>
MALYAN_LCD                             = src_filter=+<src/lcd/extui/malyan>
NEXTION_TFT                            = src_filter=+<src/lcd/extui/nextion>
USE_UHS2_USB                           = src_filter=+<src/sd/usb_flashdrive/lib-uhs2>
USE_UHS3_USB                           = src_filter=+<src/sd/usb_flashdrive/lib-uhs3>
USB_FLASH_DRIVE_SUPPORT                = src_filter=+<src/sd/usb_flashdrive/Sd2Card_FlashDrive.cpp>
AUTO_BED_LEVELING_BILINEAR             = src_filter=+<src/feature/bedlevel/abl>
AUTO_BED_LEVELING_(3POINT|(BI)?LINEAR) = src_filter=+<src/gcode/bedlevel/abl>
MESH_BED_LEVELING                      = src_filter=+<src/feature/bedlevel/mbl> +<src/gcode/bedlevel/mbl>
AUTO_BED_LEVELING_UBL                  = src_filter=+<src/feature/bedlevel/ubl> +<src/gcode/bedlevel/ubl>
UBL_HILBERT_CURVE                      = src_filter=+<src/feature/bedlevel/hilbert_curve.cpp>
BACKLASH_COMPENSATION                  = src_filter=+<src/feature/backlash.cpp>
BARICUDA                               = src_filter=+<src/feature/baricuda.cpp> +<src/gcode/feature/baricuda>
BINARY_FILE_TRANSFER                   = src_filter=+<src/feature/binary_stream.cpp> +<src/libs/heatshrink>
BLTOUCH                                = src_filter=+<src/feature/bltouch.cpp>
CANCEL_OBJECTS                         = src_filter=+<src/feature/cancel_object.cpp> +<src/gcode/feature/cancel>
CASE_LIGHT_ENABLE                      = src_filter=+<src/feature/caselight.cpp> +<src/gcode/feature/caselight>
EXTERNAL_CLOSED_LOOP_CONTROLLER        = src_filter=+<src/feature/closedloop.cpp> +<src/gcode/calibrate/M12.cpp>
USE_CONTROLLER_FAN                     = src_filter=+<src/feature/controllerfan.cpp>
HAS_MOTOR_CURRENT_DAC                  = src_filter=+<src/feature/dac>
DIRECT_STEPPING                        = src_filter=+<src/feature/direct_stepping.cpp> +<src/gcode/motion/G6.cpp>
EMERGENCY_PARSER                       = src_filter=+<src/feature/e_parser.cpp> -<src/gcode/control/M108_*.cpp>
I2C_POSITION_ENCODERS                  = src_filter=+<src/feature/encoder_i2c.cpp>
IIC_BL24CXX_EEPROM                     = src_filter=+<src/libs/BL24CXX.cpp>
HAS_SPI_FLASH                          = src_filter=+<src/libs/W25Qxx.cpp>
HAS_ETHERNET                           = src_filter=+<src/feature/ethernet.cpp> +<src/gcode/feature/network/M552-M554.cpp>
HAS_FANMUX                             = src_filter=+<src/feature/fanmux.cpp>
FILAMENT_WIDTH_SENSOR                  = src_filter=+<src/feature/filwidth.cpp> +<src/gcode/feature/filwidth>
FWRETRACT                              = src_filter=+<src/feature/fwretract.cpp> +<src/gcode/feature/fwretract>
HOST_ACTION_COMMANDS                   = src_filter=+<src/feature/host_actions.cpp>
HOTEND_IDLE_TIMEOUT                    = src_filter=+<src/feature/hotend_idle.cpp>
JOYSTICK                               = src_filter=+<src/feature/joystick.cpp>
BLINKM                                 = src_filter=+<src/feature/leds/blinkm.cpp>
HAS_COLOR_LEDS                         = src_filter=+<src/feature/leds/leds.cpp> +<src/gcode/feature/leds/M150.cpp>
PCA9533                                = src_filter=+<src/feature/leds/pca9533.cpp>
PCA9632                                = src_filter=+<src/feature/leds/pca9632.cpp>
PRINTER_EVENT_LEDS                     = src_filter=+<src/feature/leds/printer_event_leds.cpp>
TEMP_STAT_LEDS                         = src_filter=+<src/feature/leds/tempstat.cpp>
MAX7219_DEBUG                          = src_filter=+<src/feature/max7219.cpp> +<src/gcode/feature/leds/M7219.cpp>
HAS_MEATPACK                           = src_filter=+<src/feature/meatpack.cpp>
MIXING_EXTRUDER                        = src_filter=+<src/feature/mixing.cpp> +<src/gcode/feature/mixing/M163-M165.cpp>
HAS_PRUSA_MMU1                         = src_filter=+<src/feature/mmu/mmu.cpp>
HAS_PRUSA_MMU2                         = src_filter=+<src/feature/mmu/mmu2.cpp> +<src/gcode/feature/prusa_MMU2>
PASSWORD_FEATURE                       = src_filter=+<src/feature/password> +<src/gcode/feature/password>
ADVANCED_PAUSE_FEATURE                 = src_filter=+<src/feature/pause.cpp> +<src/gcode/feature/pause/M600.cpp> +<src/gcode/feature/pause/M603.cpp>
AUTO_POWER_CONTROL                     = src_filter=+<src/feature/power.cpp>
HAS_POWER_MONITOR                      = src_filter=+<src/feature/power_monitor.cpp> +<src/gcode/feature/power_monitor>
POWER_LOSS_RECOVERY                    = src_filter=+<src/feature/powerloss.cpp> +<src/gcode/feature/powerloss>
PROBE_TEMP_COMPENSATION                = src_filter=+<src/feature/probe_temp_comp.cpp> +<src/gcode/calibrate/G76_M192_M871.cpp>
HAS_FILAMENT_SENSOR                    = src_filter=+<src/feature/runout.cpp> +<src/gcode/feature/runout>
(EXT|MANUAL)_SOLENOID.*                = src_filter=+<src/feature/solenoid.cpp> +<src/gcode/control/M380_M381.cpp>
MK2_MULTIPLEXER                        = src_filter=+<src/feature/snmm.cpp>
HAS_CUTTER                             = src_filter=+<src/feature/spindle_laser.cpp> +<src/gcode/control/M3-M5.cpp>
HAS_DRIVER_SAFE_POWER_PROTECT          = src_filter=+<src/feature/stepper_driver_safety.cpp>
EXPERIMENTAL_I2CBUS                    = src_filter=+<src/feature/twibus.cpp> +<src/gcode/feature/i2c>
MECHANICAL_GANTRY_CAL.+                = src_filter=+<src/gcode/calibrate/G34.cpp>
Z_MULTI_ENDSTOPS                       = src_filter=+<src/gcode/calibrate/G34_M422.cpp>
Z_STEPPER_AUTO_ALIGN                   = src_filter=+<src/feature/z_stepper_align.cpp> +<src/gcode/calibrate/G34_M422.cpp>
G26_MESH_VALIDATION                    = src_filter=+<src/gcode/bedlevel/G26.cpp>
ASSISTED_TRAMMING                      = src_filter=+<src/feature/tramming.cpp> +<src/gcode/bedlevel/G35.cpp>
HAS_MESH                               = src_filter=+<src/gcode/bedlevel/G42.cpp>
HAS_LEVELING                           = src_filter=+<src/gcode/bedlevel/M420.cpp> +<src/feature/bedlevel/bedlevel.cpp>
DELTA_AUTO_CALIBRATION                 = src_filter=+<src/gcode/calibrate/G33.cpp>
CALIBRATION_GCODE                      = src_filter=+<src/gcode/calibrate/G425.cpp>
Z_MIN_PROBE_REPEATABILITY_TEST         = src_filter=+<src/gcode/calibrate/M48.cpp>
M100_FREE_MEMORY_WATCHER               = src_filter=+<src/gcode/calibrate/M100.cpp>
BACKLASH_GCODE                         = src_filter=+<src/gcode/calibrate/M425.cpp>
IS_KINEMATIC                           = src_filter=+<src/gcode/calibrate/M665.cpp>
HAS_EXTRA_ENDSTOPS                     = src_filter=+<src/gcode/calibrate/M666.cpp>
SKEW_CORRECTION_GCODE                  = src_filter=+<src/gcode/calibrate/M852.cpp>
DIRECT_PIN_CONTROL                     = src_filter=+<src/gcode/control/M42.cpp> +<src/gcode/control/M226.cpp>
PINS_DEBUGGING                         = src_filter=+<src/gcode/config/M43.cpp>
NO_VOLUMETRICS                         = src_filter=-<src/gcode/config/M200-M205.cpp>
HAS_MULTI_EXTRUDER                     = src_filter=+<src/gcode/config/M217.cpp>
HAS_HOTEND_OFFSET                      = src_filter=+<src/gcode/config/M218.cpp>
EDITABLE_SERVO_ANGLES                  = src_filter=+<src/gcode/config/M281.cpp>
PIDTEMP                                = src_filter=+<src/gcode/config/M301.cpp>
PREVENT_COLD_EXTRUSION                 = src_filter=+<src/gcode/config/M302.cpp>
PIDTEMPBED                             = src_filter=+<src/gcode/config/M304.cpp>
HAS_USER_THERMISTORS                   = src_filter=+<src/gcode/config/M305.cpp>
SD_ABORT_ON_ENDSTOP_HIT                = src_filter=+<src/gcode/config/M540.cpp>
BAUD_RATE_GCODE                        = src_filter=+<src/gcode/config/M575.cpp>
HAS_SMART_EFF_MOD                      = src_filter=+<src/gcode/config/M672.cpp>
COOLANT_CONTROL                        = src_filter=+<src/gcode/control/M7-M9.cpp>
AIR_EVACUATION                         = src_filter=+<src/gcode/control/M10-M11.cpp>
HAS_SOFTWARE_ENDSTOPS                  = src_filter=+<src/gcode/control/M211.cpp>
HAS_DUPLICATION_MODE                   = src_filter=+<src/gcode/control/M605.cpp>
LIN_ADVANCE                            = src_filter=+<src/gcode/feature/advance>
PHOTO_GCODE                            = src_filter=+<src/gcode/feature/camera>
CONTROLLER_FAN_EDITABLE                = src_filter=+<src/gcode/feature/controllerfan>
GCODE_MACROS                           = src_filter=+<src/gcode/feature/macro>
GRADIENT_MIX                           = src_filter=+<src/gcode/feature/mixing/M166.cpp>
HAS_SAVED_POSITIONS                    = src_filter=+<src/gcode/feature/pause/G60.cpp> +<src/gcode/feature/pause/G61.cpp>
PARK_HEAD_ON_PAUSE                     = src_filter=+<src/gcode/feature/pause/M125.cpp>
FILAMENT_LOAD_UNLOAD_GCODES            = src_filter=+<src/gcode/feature/pause/M701_M702.cpp>
CNC_WORKSPACE_PLANES                   = src_filter=+<src/gcode/geometry/G17-G19.cpp>
CNC_COORDINATE_SYSTEMS                 = src_filter=+<src/gcode/geometry/G53-G59.cpp>
HAS_M206_COMMAND                       = src_filter=+<src/gcode/geometry/M206_M428.cpp>
EXPECTED_PRINTER_CHECK                 = src_filter=+<src/gcode/host/M16.cpp>
HOST_KEEPALIVE_FEATURE                 = src_filter=+<src/gcode/host/M113.cpp>
AUTO_REPORT_POSITION                   = src_filter=+<src/gcode/host/M154.cpp>
REPETIER_GCODE_M360                    = src_filter=+<src/gcode/host/M360.cpp>
HAS_GCODE_M876                         = src_filter=+<src/gcode/host/M876.cpp>
HAS_RESUME_CONTINUE                    = src_filter=+<src/gcode/lcd/M0_M1.cpp>
HAS_LCD_CONTRAST                       = src_filter=+<src/gcode/lcd/M250.cpp>
LCD_SET_PROGRESS_MANUALLY              = src_filter=+<src/gcode/lcd/M73.cpp>
TOUCH_SCREEN_CALIBRATION               = src_filter=+<src/gcode/lcd/M995.cpp>
ARC_SUPPORT                            = src_filter=+<src/gcode/motion/G2_G3.cpp>
GCODE_MOTION_MODES                     = src_filter=+<src/gcode/motion/G80.cpp>
BABYSTEPPING                           = src_filter=+<src/gcode/motion/M290.cpp> +<src/feature/babystep.cpp>
Z_PROBE_SLED                           = src_filter=+<src/gcode/probe/G31_G32.cpp>
G38_PROBE_TARGET                       = src_filter=+<src/gcode/probe/G38.cpp>
MAGNETIC_PARKING_EXTRUDER              = src_filter=+<src/gcode/probe/M951.cpp>
SDSUPPORT                              = src_filter=+<src/sd/cardreader.cpp> +<src/sd/Sd2Card.cpp> +<src/sd/SdBaseFile.cpp> +<src/sd/SdFatUtil.cpp> +<src/sd/SdFile.cpp> +<src/sd/SdVolume.cpp> +<src/gcode/sd>
HAS_MEDIA_SUBCALLS                     = src_filter=+<src/gcode/sd/M32.cpp>
GCODE_REPEAT_MARKERS                   = src_filter=+<src/feature/repeat.cpp> +<src/gcode/sd/M808.cpp>
HAS_EXTRUDERS                          = src_filter=+<src/gcode/temp/M104_M109.cpp> +<src/gcode/config/M221.cpp>
HAS_COOLER                             = src_filter=+<src/feature/cooler.cpp> +<src/gcode/temp/M143_M193.cpp>
AUTO_REPORT_TEMPERATURES               = src_filter=+<src/gcode/temp/M155.cpp>
INCH_MODE_SUPPORT                      = src_filter=+<src/gcode/units/G20_G21.cpp>
TEMPERATURE_UNITS_SUPPORT              = src_filter=+<src/gcode/units/M149.cpp>
NEED_HEX_PRINT                         = src_filter=+<src/libs/hex_print.cpp>
NEED_LSF                               = src_filter=+<src/libs/least_squares_fit.cpp>
NOZZLE_PARK_FEATURE                    = src_filter=+<src/libs/nozzle.cpp> +<src/gcode/feature/pause/G27.cpp>
NOZZLE_CLEAN_FEATURE                   = src_filter=+<src/libs/nozzle.cpp> +<src/gcode/feature/clean>
DELTA                                  = src_filter=+<src/module/delta.cpp> +<src/gcode/calibrate/M666.cpp>
BEZIER_CURVE_SUPPORT                   = src_filter=+<src/module/planner_bezier.cpp> +<src/gcode/motion/G5.cpp>
PRINTCOUNTER                           = src_filter=+<src/module/printcounter.cpp>
HAS_BED_PROBE                          = src_filter=+<src/module/probe.cpp> +<src/gcode/probe/G30.cpp> +<src/gcode/probe/M401_M402.cpp> +<src/gcode/probe/M851.cpp>
IS_SCARA                               = src_filter=+<src/module/scara.cpp>
HAS_SERVOS                             = src_filter=+<src/module/servo.cpp> +<src/gcode/control/M280.cpp>
MORGAN_SCARA                           = src_filter=+<src/gcode/scara>
HAS_MICROSTEPS                         = src_filter=+<src/gcode/control/M350_M351.cpp>
(ESP3D_)?WIFISUPPORT                   = AsyncTCP, ESP Async WebServer
                                         ESP3DLib=https://github.com/luc-github/ESP3DLib/archive/master.zip
                                         arduinoWebSockets=links2004/WebSockets@2.3.4
                                         luc-github/ESP32SSDP@^1.1.1
                                         lib_ignore=ESPAsyncTCP

Ensure that in configuration.h file you set the temperature sensor for the MAX31855 type:
#define TEMP_SENSOR_0 -3

In the file ".../Marlin/ini/lpc176x.ini" file in the section labeled "[common_LPC]" add the following to a new line below the line containing "build_flags = ${common.build_flags} -DU8G_HAL_LINKS -IMarlin/src/HAL/LPC1768/include -IMarlin/src/HAL/LPC1768/u8g"
-DLIB_MAX31855=1

So the ".../Marlin/ini/lpc176x.ini" file should looks like this:

[common_LPC]
platform          = https://github.com/p3p/pio-nxplpc-arduino-lpc176x/archive/0.1.3.zip
platform_packages = framework-arduino-lpc176x@^0.2.6
board             = nxp_lpc1768
lib_ldf_mode      = off
lib_compat_mode   = strict
extra_scripts     = ${common.extra_scripts}
  Marlin/src/HAL/LPC1768/upload_extra_script.py
src_filter        = ${common.default_src_filter} +<src/HAL/LPC1768> +<src/HAL/shared/backtrace>
lib_deps          = ${common.lib_deps}
  Servo
custom_marlin.USES_LIQUIDCRYSTAL =  arduino-libraries/LiquidCrystal@~1.0.7
custom_marlin.NEOPIXEL_LED = Adafruit NeoPixel=https://github.com/p3p/Adafruit_NeoPixel/archive/1.5.0.zip
build_flags       = ${common.build_flags} -DU8G_HAL_LINKS -IMarlin/src/HAL/LPC1768/include -IMarlin/src/HAL/LPC1768/u8g
  -DLIB_MAX31855=1

I do not have the time right now to create a seperate GUIDE for the MAX31855 but I will put it on my list of things to do and fix.
At least this will help you get started.