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  • Gusgus
  • Gusgus
18 Sep 2025 19:08

Remora - Rpi Software Stepping Using External Microcontroller via SPI

Category: Computers and Hardware

{
	"Board": "BIGTREETECH Octopus Pro",
	"Modules":[
	{
	"Thread": "Servo",
	"Type": "Reset Pin",
		"Comment":			"Reset pin",
		"Pin":				"PC_15"
	},
		{
	"Thread": "Servo",
	"Type": "eStop",
		"Comment":			"eStop",
		"Pin":				"PG_12"
	},
	{
    "Thread": "Servo",
    "Type": "PWM",
            "Comment":                      "Spindle",
            "SP[i]":                        3,
            "PWM Pin":                      "PB_0",
            "PWM Max":                      255,
            "Hardware PWM":                 "True",
            "Variable Freq":                "True",
            "Period SP[i]":         1,
            "Period us":                    200
    },
	{
	"Thread": "Base",
	"Type": "Stepgen",
		"Comment":			"X - Joint 0 step generator",
		"Joint Number":		0,
		"Step Pin": 		"PF_9",
		"Direction Pin": 	"PF_10",
		"Enable Pin": 		"PG_2"
	},
	{
	"Thread": "Base",
	"Type": "Stepgen",
		"Comment":			"Y1 - Joint 1 step generator",
		"Joint Number":		1,
		"Step Pin": 		"PC_13",
		"Direction Pin": 	"PF_0",
		"Enable Pin": 		"PF_1"
	},
	{
	"Thread": "Base",
	"Type": "Stepgen",
		"Comment":			"Y2 - Joint 1 step generator",
		"Joint Number":		1,
		"Step Pin": 		"PE_2",
		"Direction Pin": 	"PE_3",
		"Enable Pin": 		"PD_4"
	},
	{
	"Thread": "Base",
	"Type": "Stepgen",
		"Comment":			"Z - Joint 2 step generator",
		"Joint Number":		2,
		"Step Pin": 		"PE_6",
		"Direction Pin": 	"PA_14",
		"Enable Pin": 		"PE_0"
	},
	{
	"Thread": "Servo",
	"Type": "Digital Pin",
		"Comment":			"X min",
		"Pin":				"PG_6",
		"Mode":				"Input",
		"Data Bit":			0
	},
	{
	"Thread": "Servo",
	"Type": "Digital Pin",
		"Comment":			"Y min",
		"Pin":				"PG_9",
		"Mode":				"Input",
		"Data Bit":			1
	},
	{
	"Thread": "Servo",
	"Type": "Digital Pin",
		"Comment":			"Z min",
		"Pin":				"PG_10",
		"Mode":				"Input",
		"Data Bit":			2
	},
	{
	"Thread": "Servo",
	"Type": "Digital Pin",
		"Comment":			"Probe",
		"Pin":				"PG_11",
		"Mode":				"Input",
		"Data Bit":			3
	}
	]
}
# Basic LinuxCNC config for testing of Remora firmware

[EMC]
MACHINE = Remora-XYZ
DEBUG = 0
VERSION = 1.1

[DISPLAY]
DISPLAY = axis
EDITOR = gedit
POSITION_OFFSET = RELATIVE
POSITION_FEEDBACK = ACTUAL
ARCDIVISION = 64
GRIDS = 10mm 20mm 50mm 100mm
MAX_FEED_OVERRIDE = 1.2
MIN_SPINDLE_OVERRIDE = 0.5
MAX_SPINDLE_OVERRIDE = 1.2
DEFAULT_LINEAR_VELOCITY = 28.7
MIN_LINEAR_VELOCITY = 0
MAX_LINEAR_VELOCITY = 28.7
DEFAULT_ANGULAR_VELOCITY = 28.7
MIN_ANGULAR_VELOCITY = 0
MAX_ANGULAR_VELOCITY = 28.7
INTRO_GRAPHIC = linuxcnc.gif
INTRO_TIME = 5
PROGRAM_PREFIX = ~/linuxcnc/nc_files
INCREMENTS = 50mm 10mm 5mm 1mm .5mm .1mm .05mm .01mm

[KINS]
JOINTS = 3
#KINEMATICS =trivkins coordinates=XYZ kinstype=BOTH
KINEMATICS =trivkins coordinates=XYZ

[FILTER]
PROGRAM_EXTENSION = .py Python Script
py = python

[TASK]
TASK = milltask
CYCLE_TIME = 0.010

[RS274NGC]
PARAMETER_FILE = linuxcnc.var

[EMCMOT]
EMCMOT = motmod
COMM_TIMEOUT = 1.0
COMM_WAIT = 0.010
BASE_PERIOD = 0
SERVO_PERIOD = 5000000

[HAL]
HALFILE = remora-xyz.hal
POSTGUI_HALFILE = postgui_call_list.hal

[TRAJ]
COORDINATES =  X Y Z 
LINEAR_UNITS = mm
ANGULAR_UNITS = degree
CYCLE_TIME = 0.010
DEFAULT_LINEAR_VELOCITY = 4.17
MAX_LINEAR_VELOCITY = 28.7
NO_FORCE_HOMING = 1 

[EMCIO]
EMCIO = io
CYCLE_TIME = 0.100
TOOL_TABLE = tool.tbl

#*** AXIS_X *******************************
[AXIS_X]
MAX_VELOCITY = 28.7
MAX_ACCELERATION = 287.0
MIN_LIMIT = -0.001
MAX_LIMIT = 1080.0

[JOINT_0]
TYPE = LINEAR
HOME = 0.0
MIN_LIMIT = -0.001
MAX_LIMIT = 1080.0
MAX_VELOCITY = 28.7
MAX_ACCELERATION = 287.0
STEPGEN_MAXACCEL = 1000.0
SCALE = 100.0
FERROR = 5.0
MIN_FERROR = 5.0
HOME_OFFSET = 0.000000
HOME_SEARCH_VEL = -45.000000
HOME_LATCH_VEL = -2.500000
HOME_SEQUENCE = 1
#******************************************


#*** AXIS_Y *******************************
[AXIS_Y]
MAX_VELOCITY = 28.7
MAX_ACCELERATION = 287.0
MIN_LIMIT = -0.001
MAX_LIMIT = 950.0

[JOINT_1]
TYPE = LINEAR
HOME = 0.0
MIN_LIMIT = -0.001
MAX_LIMIT = 950.0
MAX_VELOCITY = 28.7
MAX_ACCELERATION = 287.0
STEPGEN_MAXACCEL = 1000.0
SCALE = 100.0
FERROR = 5.0
MIN_FERROR = 5.0
HOME_OFFSET = 0.000000
HOME_SEARCH_VEL = -45.000000
HOME_LATCH_VEL = 2.500000
HOME_SEQUENCE = 2
#******************************************


#*** AXIS_Z *******************************
[AXIS_Z]
MAX_VELOCITY = 20.0
MAX_ACCELERATION = 150.0
MIN_LIMIT = -125.0
MAX_LIMIT = 0.001

[JOINT_2]
TYPE = LINEAR
HOME = 0.0
MIN_LIMIT = -125.0
MAX_LIMIT = 0.001
MAX_VELOCITY = 20
MAX_ACCELERATION = 150.0
STEPGEN_MAXACCEL = 187.5
SCALE = 800.0
FERROR = 5.0
MIN_FERROR = 5.0
HOME_OFFSET = 0.000000
HOME_SEARCH_VEL = 15.000000
HOME_LATCH_VEL = 0.625000
HOME_SEQUENCE = 0
#******************************************


sorry i had a formatting error
  • souh-hil
  • souh-hil's Avatar
18 Sep 2025 19:07

Firmware Request for 7i92 – Plasma CNC Build

Category: Driver Boards

 Hello everyone,This is my first post here on the LinuxCNC forum, and also my very first CNC build — so please forgive any mistakes or lack of experience on my part. I'm doing my best to learn as I go.I'm building a plasma CNC machine and using a Mesa 7i92 card. For my setup, I’ll be connecting two 5-axis breakout boards — one on P1 and one on P2. I’m looking for a suitable firmware that would allow me to:
  • Use 4 or 5 encoder inputs (for THCAD and potentially other uses)
  • Have at least 10 inputs and 5 outputs for general machine control
I’ve checked the Mesa site and the firmware list, but I’m not sure which bitfile would suit this configuration best. If anyone has a firmware file that fits these needs — or could point me in the right direction — I would be very grateful.Thank you so much in advance for your help and patience. I really appreciate the knowledge and support shared in this community.Best regards,
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