Bed.g process drives motors past endstops
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Hello,
I am trying to get auto bed leveling working, and I'm running into an issue where the motors push past endstops and crash into the far sides of the X and Y axes.
Before I run the bed leveling routine, I've already done x, y and z leveling.
The web GUI won't let me push the motors past the endstops as defined once the home*.g files have been run.
The problem I face is that once the G30 commands run, my machine lurches into horrible buzzing noises. It seems to be driving past the bounds that were set by the x, y and z endstop detection process. Let me know if there's something I'm missing!
Here is the rest of my configuration:'
https://github.com/dirtybirdnj/printrbot-duet-wifiThanks for the advice!
Here is the gcode in my bed.g file:
[[language]] ; 7 points, 3 factors, probing radius: 150, probe offset (0, 0) G30 P0 X0.00 Y150.00 Z-99999 H0 G30 P1 X129.90 Y-75.00 Z-99999 H0 G30 P2 X-129.90 Y-75.00 Z-99999 H0 G30 P3 X0.00 Y75.00 Z-99999 H0 G30 P4 X64.95 Y-37.50 Z-99999 H0 G30 P5 X-64.95 Y-37.50 Z-99999 H0 G30 P6 X0 Y0 Z-99999 S3Here is my config.g file:
[[language]] ; Communication and general M111 S0 ; Debug off M550 OldYeller ; Machine name and Netbios name (can be anything you like) M551 Preprap ; Machine password (used for FTP) ;*** If you have more than one Duet on your network, they must all have different MAC addresses, so change the last digits M540 P0xBE:0xEF:0xDE:0xAD:0xFE:0xED ; MAC Address ;*** Wifi Networking M552 S1 ; Enable WiFi. Disabled for setup and testing. Enable once set up on your network. M555 P2 ; Set output to look like Marlin M575 P1 B57600 S1 ; Comms parameters for PanelDue G21 ; Work in millimetres G90 ; Send absolute coordinates... M83 ; ...but relative extruder moves ; Axis and motor configuration M569 P0 S1 ; Drive 0 goes forwards (change to S0 to reverse it) M569 P1 S1 ; Drive 1 goes backwards M569 P2 S1 ; Drive 2 goes forwards M569 P3 S1 ; Drive 3 goes forwards M569 P4 S1 ; Drive 4 goes forwards M350 X16 Y16 Z16 E16 I1 ; set 16x microstepping with interpolation M574 X1 Y1 Z0 S1 ; set homing switch configuration (Y and y switches, at low end, active high) M906 X800 Y800 Z800 E800 ; Set motor currents (mA) M201 X800 Y800 Z15 E100 ; Accelerations (mm/s^2) M203 X6000 Y6000 Z100 E600 ; Maximum speeds (mm/min) M566 X30 Y30 Z30 E20 ; Maximum jerk speeds mm/minute M208 X150 Y150 Z100 ; set axis maxima and high homing switch positions (adjust to suit your machine) M208 X-0 Y0 Z0 S1 ; set axis minima and low homing switch positions (adjust to make X=0 and Y=0 the edges of the bed) M92 X80 Y80 Z2020 E95 ; set axis steps/mm ;M92 E420:420 ; set extruder 0 and 1 steps/mm G21 ; Work in millimetres G90 ; Send absolute coordinates... M83 ; ...but relative extruder moves ; Thermistors M305 P0 T100000 B3950 R4700 H30 L0 ; Put your own H and/or L values here to set the bed thermistor ADC correction M305 P1 T100000 B3974 R4700 H30 L0 ; Put your own H and/or L values here to set the first nozzle thermistor ADC correction M305 P2 T100000 B3974 R4700 H30 L0 ; Put your own H and/or L values here to set the second nozzle thermistor ADC correction M570 S180 ; Hot end may be a little slow to heat up so allow it 180 seconds ; Fans ;M106 P1 H-1 ; disable thermostatic mode for fan 1 ; Tool definitions M563 P0 D0 H1 F0:1 ; Define tool 0 - Heater 1, Fan 0 (extruder) and Fan 1 (bed fan) G10 P0 S0 R0 ; Set tool 0 operating and standby temperatures M92 E663:663 ; Set extruder steps per mm ; Z probe and compensation definition ;*** If you have a switch instead of an IR probe, change P1 to P4 in the following M558 command M558 P5 X0 Y0 Z1 ; Z probe is an inductive probe and is used for homing G31 X25 Y0 Z0 P500 ; Set the zprobe height and threshold (put your own values here) ;*** If you are using axis compensation, put the figures in the following command M556 S78 X0 Y0 Z0 ; Axis compensation here M208 S1 Z-0 ; set minimum Z ; T0 ; select first hot end -
Deleted this post because it wasn't good advice for your machine configuration
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The steps per mm for your Z axis look really odd to me. You did say it homes correctly so maybe it's right but you have them set to 2020. Assuming you are using a "standard" 1.8 degree stepper which gives 200 steps per rev, it would mean 10.1 revolutions of he stepper to get 1mm of movement which if you are using a screw, it would mean a pitch of 0.1mm which is impossible or it's 1mm pitch and you are using 1 to 10.1 gearing which is also odd.
Edit. Scratch that - my maths were wrong - not awake yet
2nd Edit. I should have divided by 16 again. I keep forgetting that the firmware calls it steps per mm but in fact it's asking for 1/16th micro steps per mm - always confuses me.
Anyway, dividing 2020 by 16 then by 200 (assuming 1.8 degree motor) I get 0.63125 which is a strange number because it would equate to a gear ratio of 101:16000. -
Your machine is Cartesian but the bed.g file you are using is for a Delta printer.
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The steps per mm for your Z axis look really odd to me. You did say it homes correctly so maybe it's right but you have them set to 2020. Assuming you are using a "standard" 1.8 degree stepper which gives 200 steps per rev, it would mean 10.1 revolutions of he stepper to get 1mm of movement which if you are using a screw, it would mean a pitch of 0.1mm which is impossible or it's 1mm pitch and you are using 1 to 10.1 gearing which is also odd.
Yeah, one of the things that's super confusing about the machine itself is that the X and Y axes use metric lead screws, but the Z axis uses standard. I was given this machine by someone… and it's been a very complicated process figuring out exactly what parts it has (nozzle, hotend, etc). There IS a metric upgrade... but I don't know if it was done on my machine.
https://printrbot.com/shop/z-lead-screw-4-start-upgrade/
Your machine is Cartesian but the bed.g file you are using is for a Delta printer.
Ah, good catch. Thank you. Looks like I have some more reading/research to do tonight
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…..............Yeah, one of the things that's super confusing about the machine itself is that the X and Y axes use metric lead screws, but the Z axis uses standard. I was given this machine by someone... and it's been a very complicated process figuring out exactly what parts it has (nozzle, hotend, etc). There IS a metric upgrade... but I don't know if it was done on my machine................
Ah, a mixture of imperial and metric - that explain things. Anyway, if Z goes up a down by the amount that you tell it, then the steps/mm must be correct.
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Ah, a mixture of imperial and metric - that explain things. Anyway, if Z goes up a down by the amount that you tell it, then the steps/mm must be correct.
Haha yep it's weird. I found out that this upgrade has NOT been installed on my pb… so I'm going to order this part. One really nice thing is that it'll increase the Z range of my machine to 290mm! Keeping my configuration simpler (all metric) will be a nice benefit too.
