1 thing stopping me now..



  • OK almost there.. 1 thing is still not right and I can't find answers searching… probably right in front of me.. LOL

    all axis move correctly, but Z end stop isn't registering.. it's the same mechanical one as X & Y which are both work fine. thinking it's something to do with "probe" but I don't have a probe and not sure how to shut off... 😞 just a guess though.



  • Please post your config.g here, we need that to know how you've set things up so far.



  • ; Configuration file for Duet WiFi (firmware version 1.17)
    ; executed by the firmware on start-up
    ;
    ; generated by RepRapFirmware Configuration Tool on Mon Oct 16 2017 05:23:05 GMT-0400 (EDT)

    ; General preferences
    M111 S0 ; Debugging off
    G21 ; Work in millimetres
    G90 ; Send absolute coordinates…
    M83 ; ...but relative extruder moves
    M555 P2 ; Set firmware compatibility to look like Marlin
    M208 X0 Y0 Z0 S1 ; Set axis minima
    M208 X230 Y210 Z200 S0 ; Set axis maxima

    ; Endstops
    M574 X1 Y1 Z1 S0 ; Define active low and unused microswitches
    M558 P1 X0 Y0 Z0 H5 F120 T6000 ; Set Z probe type to unmodulated, the axes for which it is used and the probe + travel speeds
    G31 P600 X0 Y0 Z2.5 ; Set Z probe trigger value, offset and trigger height
    M557 X15:215 Y15:195 S20 ; Define mesh grid

    ; Drives
    M569 P0 S1 ; Drive 0 goes backwards
    M569 P1 S0 ; Drive 1 goes forwards
    M569 P2 S1 ; Drive 2 goes backwards
    M569 P3 S0 ; Drive 3 goes forwards
    M350 X16 Y16 Z16 E16 I1 ; Configure microstepping with interpolation
    M92 X80 Y80 Z400 E97 ; Set steps per mm
    M566 X900 Y900 Z12 E120 ; Set maximum instantaneous speed changes (mm/min)
    M203 X6000 Y6000 Z180 E1200 ; Set maximum speeds (mm/min)
    M201 X500 Y20 Z250 E250 ; Set accelerations (mm/s^2)
    M906 X800 Y800 Z800 E800 I30 ; Set motor currents (mA) and motor idle factor in per cent
    M84 S30 ; Set idle timeout

    ; Heaters
    M143 S245 ; Set maximum heater temperature to 245C
    M305 P0 T100000 B4138 C0 R4700 ; Set thermistor + ADC parameters for heater 0
    M305 P1 T100000 B4138 C0 R4700 ; Set thermistor + ADC parameters for heater 1

    ; 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

    ; Network
    M550 PMax Micron ; Set machine name
    M552 S1 ; Enable network
    M587 **********; Configure access point. You can delete this line once connected
    M586 P0 S1 ; Enable HTTP
    M586 P1 S0 ; Disable FTP
    M586 P2 S0 ; Disable Telnet

    ; Fans
    M106 P0 S0.3 I0 F500 H-1 ; Set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned off
    M106 P1 S1 I0 F500 H-1 ; Set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned off
    M106 P2 S1 I0 F500 H-1 ; Set fan 2 value, PWM signal inversion and frequency. Thermostatic control is turned off

    ; Custom settings are not configured



  • just did a M119 and I get this if that helps? …. M119
    Endstops - X: at min stop, Y: at min stop, Z: not stopped, Z probe: not stopped



  • thinking it's in this section.. but no clue what to change/delete/ncomment…

    ; Endstops
    M574 X1 Y1 Z1 S0 ; Define active low and unused microswitches
    M558 P1 X0 Y0 Z0 H5 F120 T6000 ; Set Z probe type to unmodulated, the axes for which it is used and the probe + travel speeds
    G31 P600 X0 Y0 Z2.5 ; Set Z probe trigger value, offset and trigger height
    M557 X15:215 Y15:195 S20 ; Define mesh grid


  • administrators



  • If you're not using a Z-probe, then you shouldn't have the M558/G31/M557 lines (delete the whole line).

    Use M119 to test if the Z-endstop is wired properly - trigger it manually and check that it says "at min stop".



  • @dc42:

    Have you read https://duet3d.com/wiki/Configuring_RepRapFirmware_for_a_Cartesian_printer#Homing_Z ?

    no.. I hadn't ,… sweet!!! sooo much info and sooo little brain . 😉 . thanks . 🙂

    @elmoret:

    If you're not using a Z-probe, then you shouldn't have the M558/G31/M557 lines (delete the whole line).

    Use M119 to test if the Z-endstop is wired properly - trigger it manually and check that it says "at min stop".

    ya, thought that line(s) weren't needed but still WAY to new to this code/board and didn't want to make things worse (I have a habit of that 😉 )



  • No worries, we all start somewhere! Happy to help.



  • @dc42:

    Have you read https://duet3d.com/wiki/Configuring_RepRapFirmware_for_a_Cartesian_printer#Homing_Z ?

    That worked !!! thanks for pointing to that!! printed out the whole section, need to read through it throughly



  • OK new issue.. might be nothing? just did the PID auto tune thing.. after it came up with a warning..
    "warning, heater one appears to be over powered and a fire risk!! If left on at full power, it's temp is predicted to reach 757C"

    Umm ….ack?

    now the PID tune should prevent this correct?
    is there a way to lower the power coming out of the board? looked at the "hotend" settings but nothing says "hot end power", or voltage or something..



  • All a PID tune does is help the controller hold the desired temperature better, i.e. with less variation. Think of PID tuning as practicing walking on a tightrope - once your brain is trained (the PID gains are tuned), there's less wobbling around (temperature variation).

    A heater that powerful is a fire risk if the controller were to fail. I would guess you're using a 12v heater on 24v, or a 40w heater with a sock or other insulation?



  • @elmoret:

    All a PID tune does is help the controller hold the desired temperature better, i.e. with less variation. Think of PID tuning as practicing walking on a tightrope - once your brain is trained (the PID gains are tuned), there's less wobbling around (temperature variation).

    A heater that powerful is a fire risk if the controller were to fail. I would guess you're using a 12v heater on 24v, or a 40w heater with a sock or other insulation?

    nope, 12v system with 12v heater heater is stock MK8.. there is a sock on it I made.

    Ya I get the basis of the PID tune.. and got to say, it's WAY more stable than with marlin's.. getting like a 0.5º variation where marlin I was get +/-2º or more.



  • Sounds like a 40 watt heater with a sock. That is too much heat/too much insulation, if the Duet's FETs ever failed on, the hotend would reach ~700C, melt the heater block, and likely start a fire. Would recommend a 30w heater if you plan to use a sock.

    The PID tune won't prevent a fire as no matter what the gains are, it can't compensate for a hardware failure.


 

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