dual y axis with dual endstops
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Please assist, my y axis is moving on two different motors with individual endstops to allow me to adjust the skew of the y axis in relation to the rest of the printer.
The printer is similar to a ender 5.
The issue i'm facing is one of the yaxis moves forward when homing, it then triggers as expected, whilst the other y axis doesn't continue and instead stops with the other axis.
There are two error i have faced when troubleshoot with all the differant guides on this.
the first one is G28 Y not enough visible axis.
the second one is failed to enable endstops....MY config.g file is:
; Configuration file for Duet WiFi (firmware version 3) ; executed by the firmware on start-up ; ; generated by RepRapFirmware Configuration Tool v3.2.3 on Tue Mar 16 2021 15:15:40 GMT+0000 (Greenwich Mean Time) ; General preferences G90 ; send absolute coordinates... M83 ; ...but relative extruder moves M550 P"NAZS" ; set printer name ; Network M552 S1 ; enable network M586 P0 S1 ; enable HTTP M586 P1 S0 ; disable FTP M586 P2 S0 ; disable Telnet ; Drives M569 P0 S1 ; physical drive 0 goes backwards M569 P1 S1 ; physical drive 1 goes forwards M569 P2 S1 ; physical drive 2 goes forwards M569 P3 S1 ; physical drive 3 goes forwards M569 P4 S1 ; physical drive 4 goes forwards M584 X0 Y1:4 Z2 E3 U4 P3 ; set drive mapping M350 X16 Y16:16 U16 Z16 E16 I1 ; configure microstepping with interpolation M92 X80.00 Y80.00:80.00 U80.00 Z1600.00 E415.00 ; set steps per mm M566 X900.00 Y900.00:900.00 U900.00 Z60.00 E120.00 ; set maximum instantaneous speed changes (mm/min) M203 X6000.00 Y6000.00:6000.00 U6000.00 Z180.00 E1200.00 ; set maximum speeds (mm/min) M201 X500.00 Y500.00:500.00 U500.00 Z20.00 E250.00 ; set accelerations (mm/s^2) M906 X800 Y400:400 U400 Z800 E800 I30 ; set motor currents (mA) and motor idle factor in per cent M84 S30 ; Set idle timeout ; Axis Limits M208 X0 Y0 U0 Z0 S1 ; set axis minima M208 X300 Y300 U300 Z300 S0 ; set axis maxima ; Endstops M574 X2 S1 P"xstop" ; configure active-high endstop for low end on X via pin xstop M574 Y1 S1 P"ystop+e1stop" ; configure active-high endstop for low end on Y via pin ystop ;M574 U1 S1 P"e1stop" M574 Z1 S2 ; configure Z-probe endstop for low end on Z ; Z-Probe M950 S0 C"exp.heater3" ; create servo pin 0 for BLTouch M558 P9 C"^zprobe.in" H5 F120 T6000 ; set Z probe type to bltouch and the dive height + speeds G31 P500 X0 Y0 Z2.5 ; set Z probe trigger value, offset and trigger height M557 X15:215 Y15:195 S20 ; define mesh grid ; Heaters M308 S0 P"bedtemp" Y"thermistor" T100000 B4138 ; configure sensor 0 as thermistor on pin bedtemp M950 H0 C"bedheat" T0 ; create bed heater output on bedheat and map it to sensor 0 M307 H0 B1 S1.00 ; enable bang-bang mode for the bed heater and set PWM limit M140 H0 ; map heated bed to heater 0 M143 H0 S120 ; set temperature limit for heater 0 to 120C M308 S1 P"e0temp" Y"thermistor" T100000 B4725 ; configure sensor 1 as thermistor on pin e0temp M950 H1 C"e0heat" T1 ; create nozzle heater output on e0heat and map it to sensor 1 M307 H1 B0 S1.00 ; disable bang-bang mode for heater and set PWM limit M143 H1 S280 ; set temperature limit for heater 1 to 280C ; Fans M950 F0 C"fan0" Q500 ; create fan 0 on pin fan0 and set its frequency M106 P0 S0 H-1 ; set fan 0 value. Thermostatic control is turned off M950 F1 C"fan1" Q500 ; create fan 1 on pin fan1 and set its frequency M106 P1 S1 H1 T45 ; set fan 1 value. Thermostatic control is turned on ; Tools M563 P0 D0 H1 F0 ; 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 ; Custom settings are not definedMY Home y.g is:
; homey.g ; called to home the Y axis ; ; generated by RepRapFirmware Configuration Tool v3.2.3 on Tue Mar 16 2021 15:15:40 GMT+0000 (Greenwich Mean Time) G91 ; relative positioning M584 Y1 U4 P4; split y axis G1 H2 Z-5 F6000 ; lift Z relative to current position G1 H1 Y400 U400 F500 ; move quickly to Y axis endstop and stop there (first pass) G1 H2 Y-5 U400 F6000 ; go back a few mm G1 H1 Y400 U400 F360 ; move slowly to Y axis endstop once more (second pass) G1 H2 Z5 F6000 ; lower Z again G0 Y0.09 ; fully align gantry M584 Y1:4 P3; join y axis G90 ; absolute positioning ;M581 Y U S-1 T0 C0 ; Disable y triggersMY COnfig_Overide.g is:
; config-override.g file generated in response to M500 at 2021-03-17 17:28 ; This is a system-generated file - do not edit ; Heater model parameters M307 H0 A340.0 C140.0 D5.5 S1.00 V0.0 B1 M307 H1 A548.2 C203.9 D4.1 S1.00 V24.2 B0 ; Workplace coordinates G10 L2 P1 X0.00 Y0.00 Z0.00 G10 L2 P2 X0.00 Y0.00 Z0.00 G10 L2 P3 X0.00 Y0.00 Z0.00 G10 L2 P4 X0.00 Y0.00 Z0.00 G10 L2 P5 X0.00 Y0.00 Z0.00 G10 L2 P6 X0.00 Y0.00 Z0.00 G10 L2 P7 X0.00 Y0.00 Z0.00 G10 L2 P8 X0.00 Y0.00 Z0.00 G10 L2 P9 X0.00 Y0.00 Z0.00Please help
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In RRF3 you do not need the U axis at all. Remove all references to it. The Y axis will know it's using two motors and endstops from the M584 and M574 commands and home accordingly with a single Y move.
Also in your commands that refer to the Y axis you only need to set the value once for that axis.
M350 X16 Y16:16 U16 Z16 E16 I1 ; configure microstepping with interpolation M92 X80.00 Y80.00:80.00 U80.00 Z1600.00 E415.00 ; set steps per mm M566 X900.00 Y900.00:900.00 U900.00 Z60.00 E120.00 ; set maximum instantaneous speed changes (mm/min) M203 X6000.00 Y6000.00:6000.00 U6000.00 Z180.00 E1200.00 ; set maximum speeds (mm/min) M201 X500.00 Y500.00:500.00 U500.00 Z20.00 E250.00 ; set accelerations (mm/s^2) M906 X800 Y400:400 U400 Z800 E800 I30 ; set motor currents (mA) and motor idle factor in per centFor the Y axis you only need the value once. And remove U entirely.
Use M115 to double check your firmware version.
Same process as used for the Z axis as described here:
https://duet3d.dozuki.com/Wiki/Bed_levelling_using_multiple_independent_Z_motors#Section_In_RepRapFirmware_Num_3
