UNSOLVED Jerk and acceleration settings cr-10s5



  • Well not much left to do but tweek my settings.
    I've been reading up on both and unfortunately dont have A clue where to set this stuff. The settings have never been played with and i am curious whether this is default or was imported " somehow "
    šŸ˜³ šŸ™„
    Jerk is set at 10, and acceleration at 10,000. ??? What happens when you drop it and what happens when its raized lots of info on where they set it but not why or what it does it improve when droped???

    Second when I home. It stops half way. Although the size is set at 500mm in my config file.
    Last. Ever since i instaled and abl bed sensor my end stop sw.fail to stop the carraige and slames into the y and x axes. It now does not see the end stops althou they function the led on the duet i suspect when i followed the online instructions steps got missed or limets not chainged ?????? How should i aproch approach this. thanks


  • Moderator

    Please post your config.g and homing files.



  • Take a bit need to teach my self how. But will do tonight. thanks



  • ; Configuration file for Duet WiFi (firmware version 1.21)
    ; executed by the firmware on start-up
    ;
    ; generated by RepRapFirmware Configuration Tool on Thu Sep 06 2018 21:21:12 GMT-0700 (Pacific Daylight Time)

    ; General preferences
    G90 ; Send absolute coordinates...
    M83 ; ...but relative extruder moves

    ; Network
    M550 Pe3 ; Set machine name
    M552 S1 ; Enable network
    ;*** Access point is configured manually via M587
    M586 P0 S1 ; Enable HTTP
    M586 P1 S0 ; Disable FTP
    M586 P2 S0 ; Disable Telnet

    ; Drives
    M569 P0 S0 ; Drive 0 goes forward
    M569 P1 S1 ; Drive 1 goes backwards
    M569 P2 S1 ; Drive 2 goes forwards
    M569 P3 S0 ; Drive 3 goes backwards

    M569 P3 S1 ; Drive 3 (Extruder 0) goes backwards

    M350 X16 Y16 Z16 E16 I1 ; Configure microstepping with interpolation
    ; M92 X79.7 Y79.6 Z400.4 E96 ; Set steps per mm
    M92 X79.2 Y79.2 Z400.5 E96 ; Set steps per mm

    M566 X600 Y600 Z24 E300 ; Set maximum instantaneous speed changes (mm/min)
    M203 X30000 Y30000 Z300 E1500 ; Set maximum speeds (mm/min)
    M201 X300 Y300 Z100 E5000 ; Set accelerations (mm/s^2) was 500 you changed it to 300 for stall guard
    M906 x950 Y950 Z850 E950 I30 ; Set motor currents (mA) and motor idle factor in per cent
    M84 S300 ; Set idle timeout

    ; Axis Limits
    ; M208 X-5.5 Y-10 Z0 S1 ; Set axis minima
    ; M208 X258.5 Y246 Z260 S0 ; Set axis maxima

    M208 X0 Y0 Z0 S1 ; Set axis minima
    M208 X500 Y500 Z500 S0 ; Set axis maxima

    ; Endstops
    M574 X0 Y0 Z0 S1 ; Set endstops controlled by motor l

    ; Z-Probe
    ; M558 P5 H5 F100 T2000 ; Set Z probe type to bltouch and the dive height + speeds
    M558 P9 H5 F100 T4000 ; Set Z probe type to bltouch and the dive height + speeds
    G31 P500 X-42 Y-5 Z1.35 ; Set Z probe trigger value, offset and trigger height - is Nozzle hoger

    M557 X15:215 Y35:215 S20 ; Define mesh grid

    ; Heaters
    M305 P0 T100000 B4138 R4700 ; Set thermistor + ADC parameters for heater 0
    M143 H0 S120 ; Set temperature limit for heater 0 to 80C
    M305 P1 T100000 B4400 R4700 ; Set thermistor + ADC parameters for heater 1
    M143 H1 S280 ; Set temperature limit for heater 1 to 240C

    ; M307 H1 A245.3, C121.7, D4.0, S0.5 ; PID

    ; Fans
    ; M106 P0 S1 I0 F500 H T45 ; Set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned on
    ; M106 P1 S0 I0 F500 H-1 ; Set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned off

    M106 P0 S0 I0 F500 H-1 ; Set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned off
    M106 P1 S1 I0 F500 H1 T45 ; Set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned on

    ; Tools
    M563 P0 D0 H1 ; Define tool 0
    G10 P0 X0 Y0 Z0 ; Set tool 0 axis offsets
    G10 P0 R0 S0 ; Set initial tool 0 active and standby temperatures to 0C

    ; Automatic saving after power loss is not enabled
    ; Custom settings are not configured

    ; BLTouch - Heaters
    M307 H3 A-1 C-1 D-1 ; Disable heater on PWM channel for BLTouch

    ; Enable Bed Leveling
    G29 S1 ; Enable Mesh Bed Leveling



  • ; homeall.g

    G91 ; relative positioning
    G1 S2 X0.2 Y0.2 Z0.2 ; Move all axis 0.2 mm, clear stall status
    M98 Pdeployprobe.g ; deploy mechanical Z probe

    ; x and y Sensor less homing
    M400 ; make sure everything has stopped before we make changes
    M915 X S2 Y S3 R0 F0 ; set X and Y sensitivity, do nothing when stall, unfiltered
    M574 X1 Y1 S3 ; set endstops to use motor stall
    G1 S2 Z10 F1200 ; lift Z
    G1 S1 X-265 Y-260 F5000 ; move X and Y back, stopping at the end stop
    M400 ; make sure everything has stopped
    G90 ; back to absolute mode

    ;G1 X115 Y115 F12000 ; Move to center of bed and home Z
    G1 X127 Y134 F6000 ; go to first bed probe point and home Z
    G30 ; home Z by probing the bed

    M915 X S10 Y S10 R3 F0 ; set X and Y sensitivity to -0, when stall home XY and resume print, filtered so it takes 4 steps to figure out it has stalled

    M98 Pretractprobe.g ; retract mechanical Z probe



  • ; homex.g

    G91 ; relative positioning
    G1 S2 X0.2 Y0.2 Z0.2 ; Move all axis 0.2 mm, clear stall status
    M400 ; make sure everything has stopped before we make changes
    M915 X S2 R0 F0 ; set X and Y sensitivity, do nothing when stall, unfiltered
    M574 X0 S1 ; set endstops to use motor stall
    G1 S1 X-265 F5000 ; move X, stopping at the end stop
    G1 Z-0.2 ; Move all axis -0.2 mm,
    M400 ; make sure everything has stopped
    G90 ; back to absolute mode
    M915 X S2 Y S3 R3 F0 ; set X and Y sensitivity to 0, when stall home XY and resume print, filtered so it takes 4 steps to figure out it has stalled



  • ; homey.g

    G91 ; relative positioning
    G1 S2 X0.2 Y0.2 Z0.2 ; Move all axis 0.2 mm, clear stall status
    M400 ; make sure everything has stopped before we make changes
    M915 Y S2 R0 F0 ; set X and Y sensitivity, do nothing when stall, unfiltered
    M574 Y0 S1 ; set endstops to use motor stall
    G1 S1 Y-260 F5000 ; move X, stopping at the end stop
    G1 Z-0.2 ; Move z -0.2 mm,
    M400 ; make sure everything has stopped
    G90 ; back to absolute mode
    M915 X S2 Y S3 R3 F0 ; set X and Y sensitivity to 0, when stall home XY and resume print, filtered so it takes 4 steps to figure out it has stalled



  • thanks for looking


  • Moderator

    @ziggymanpopo said in Jerk and acceleration settings cr-10s5:

    ; Enable Bed Leveling
    G29 S1 ; Enable Mesh Bed Leveling

    You should probably move this to the end of your homeall rather than the end of config.g. Having it enabled as soon as the printer is turned on means that you haven't yet defined where Z0 is, which can lead to frustrations with first layers.

    @ziggymanpopo said in Jerk and acceleration settings cr-10s5:

    G31 P500

    Try G31 P25 instead for a tighter trigger threshold on theBLtouch.

    @ziggymanpopo said in Jerk and acceleration settings cr-10s5:

    M98 Pdeployprobe.g ; deploy mechanical Z probe
    M98 Pretractprobe.g ; retract mechanical Z probe

    You don't need to manually deploy or retract the pin. The Duet will do that on it's own as needed for probing.

    @ziggymanpopo said in Jerk and acceleration settings cr-10s5:

    M566 X600 Y600 Z24 E300 ; Set maximum instantaneous speed changes (mm/min)
    M203 X30000 Y30000 Z300 E1500 ; Set maximum speeds (mm/min)
    M201 X300 Y300 Z100 E5000 ; Set accelerations (mm/s^2

    X and Y jerk look fine, especially for a large bed like the S5.
    Z jerk may be a bit low for mesh bed leveling. Try Z60.
    E jerk is bit low at 300, especially if you intend to use pressure advance. Try adding an order of magnitude, 3000.
    X and Y acceleration are a bit low. 600-900 for X wouldn't be too crazy. Given the size of the Y axis 600 would probably be appropriate.



  • Yeah prob. Should have mentioned that i have an abl inductive sensor not a bl toutch ,, so i believe the person who helped me with the original files picked a generic file just to get me going. So fare so good but i have some serious clean up to do not sure where to start except "one thing at a time. " just like any kit printer i realize my learnig curve the printer has some issue because of the board configuration and the printer are not quite a match or set right. i will take one ore two items at a time . The info has been invaluable. And i think this will keep me focused i thank all for there input šŸ˜



  • What is causing ghosting and ripples in the y axes ...its just in the y ??? Does it have to do woth the weight of my 500mm bed... Also if i turn up any settings won't it hit the end stop harder ...what in the setup made the end stops no longer function. Should i chainge it back so they do and will this stop hard hits when homming


  • Moderator

    @ziggymanpopo said in Jerk and acceleration settings cr-10s5:

    G1 S1 X-265 Y-260 F5000 ; move X and Y back, stopping at the end stop

    It's stopping halfway because you're only moving half the distance of the full bed size. Increase those movements to more than 500 to ensure they hit the endstop.

    I didn't realize you were not using the BLTouch. If the probe is working, leave the settings as is and disregard my comments.

    If you're still getting ringing even with those conservative values I would look at belt tension and flex. Such a large and heavy bed is going to be difficult to tame.

    The speed of the homing moves is set in the homing files. Since you're using sensorless homing you must use a fairly rapid move for the stall detection to trigger properly. Personally I'm not a fan of the idea of slamming my print head into a physical stop to home, but it seems to be all the rage these days.



  • I agree??? slamming is no good. Is there an easy way to put endstops back in play ??? Did that happen when i activated the. Abl sensor in the gcode??? Is it advisable to reactivate the end stops...When i set up the board they worked ??? The second problem i have is with the stall feature is when it is at the home on x,,, and its not on home for y ans z . It makes an auful sound on x when homming y and z . "The rest of the way." "like when an print is done"it homes y and z... but x isballready homed.... So it grinds x because its allready homed....then it homes the other two. Any hints highly appreciated



  • Would it be possable to increase the size of the belt to aid in the taming of my large bed. ???
    Id thought about putting in linear screws and guides. as a solution for the y axes


  • Moderator

    Well if the end stop switches are still in place and connected to the board you can change the config to use those instead of stall detection.


  • Moderator

    @ziggymanpopo said in Jerk and acceleration settings cr-10s5:

    Would it be possable to increase the size of the belt to aid in the taming of my large bed. ???
    Id thought about putting in linear screws and guides. as a solution for the y axes

    Larger belts may help for belt stretch but so would higher quality belts. It still doesn't reduce the weight of the bed though.

    Linear screws have their own rotational momentum to deal with so aren't actually a solution. You'd be limited to the same or lower acceleration.


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