The most time consuming is STEPPER_FREQUENCY. These demo values work fine forīoard with cartesian motion system and no display. If these are set too high, strange things can happen. Then there are 3 frequencies that need to be adjusted to work perfectly together and do leave enough CPUįor the remaining tasks. NUM_AXES sets the number of axes you can control. */ # define TMC_CHOPPER_TIMING CHOPPER_TIMING_DEFAULT_12V // true = interpolate to 256 microsteps for smoother motion # define TMC_INTERPOLATE true // Use internal rsense resistor # define TMC_INTERNAL_RSENSE false // Current used when motor stands still # define TMC_HOLD_MULTIPLIER 0.5 // Reduce current on over temperature warnings by x milli ampere, 0 = disable # define TMC_CURRENT_STEP_DOWN 50 // Define which data should be stored to eeprom # define STORE_MOTOR_MICROSTEPPING 1 # define STORE_MOTOR_CURRENT 1 # define STORE_MOTOR_HYBRID_TRESHOLD 1 # define STORE_MOTOR_STEALTH 1 # define STORE_MOTOR_STALL_SENSITIVITY 1 There are some predefined values to get you started:ĬHOPPER_TIMING_DEFAULT_12V = # define VELOCITY_PROFILE 5 // 1 = linear, 3 = cubic, 5 = quintic velocity shape # define SLOW_DIRECTION_CHANGE 1 // Set 1 when driver need some settle time when direction changes # define Z_SPEED 10 // Z positioning speed # define XY_SPEED 100 // XY positioning speed for normal operations // Some common settings for trinamic driver settings /** # define BLOCK_FREQUENCY 1000 // Number of blocks with constant stepper rate per second. # define PREPARE_FREQUENCY 2000 // Update frequency for new blocks. Interrupt, so it also has one 10us before it gets used.īasic settings that have influence on stepper drivers and motion control are these: # define NUM_AXES 4 // X,Y,Z and E for extruder A,B,C would be 5,6,7 # define STEPPER_FREQUENCY 250000 // Maximum stepper frequency. Direction changes are done at the end of the stepper High and low signal are guaranteed to be on for 10us. speed the first interrupt turn signal on then 10us later it gets tuned off and NOT directly on. If motors need a longer high/low signal you reduce the max. If you have a very fast stepper driver that works with 1ns low signals, you can have motors now run atġ00KKhz maximum frequency. It disables all signals at the start of the stepper functionĮxample: You set STEPPER_FREQUENCY to 100000 (due based board). This concept requites no double or quad stepping andĪlso has no delays that only suck up cpu power. With the new design, we run always at theįrequency and see which stepper needs a step and run it. Set signals for and will reduce the maximum stepper frequency. Of course more motors are more work to control and Special function and can be used for whatever you want. Three axis X, Y, Z are for the spacial moves. Onwards we support up to 7 axis which can be controlled with linear, cubic or quintic velocity profiles. No printer, laser cutter or cnc mill would work without motors making all the moves. Repetier-Firmware - Configuration - Motors Introduction
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