Sensorless homing corexy not working since upgrade to RR3
So i last used my printer with RR 1.2 just updated and renewed the config and everything works apart from the sensorless homing no matter what i set the motor current to or the sensitivity it just plants into the x home and makes loads of noise i have included my complete config and also the testing macro that i am using.
; Configuration file for Duet WiFi (firmware version 3) ; executed by the firmware on start-up ; ; generated by RepRapFirmware Configuration Tool v2.1.8 on Wed Apr 22 2020 22:44:08 GMT+0100 (British Summer Time) ; General preferences G90 ; send absolute coordinates... M83 ; ...but relative extruder moves M550 P"HEVO" ; set printer name M669 K1 ; select CoreXY mode ; Network M552 S1 ; enable network M586 P0 S1 ; enable HTTP M586 P1 S0 ; disable FTP M586 P2 S0 ; disable Telnet M552 P192.168.1.103 ; set fixed IP ; Drives M569 P0 S1 ; physical drive 0 goes forwards M569 P1 S1 ; physical drive 1 goes forwards M569 P2 S1 ; physical drive 2 goes forwards M569 P3 S0 ; physical drive 3 goes backwards M584 X0 Y1 Z2 E3 ; set drive mapping M350 X16 Y16 Z16 E16 I1 ; configure microstepping with interpolation M92 X80.00 Y80.00 Z4000.00 E420.00 ; set steps per mm M566 X900.00 Y900.00 Z12.00 E120.00 ; set maximum instantaneous speed changes (mm/min) M203 X6000.00 Y6000.00 Z180.00 E1200.00 ; set maximum speeds (mm/min) M201 X500.00 Y500.00 Z20.00 E250.00 ; 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 ; Axis Limits M208 X0 Y0 Z0 S1 ; set axis minima M208 X300 Y00 Z200 S0 ; set axis maxima ; Endstops M574 X1 S3 ; configure sensorless endstop for low end on X M574 Y1 S1 P"ystop" ; configure active-high endstop for low end on Y via pin ystop M915 X S5 F1 R0 ; sensorless homing parameters ; Z-Probe M950 S0 C"exp.heater3" ; create servo pin 0 for BLTouch M558 P9 C"^zprobe.in" H5 F100 T2000 ; set Z probe type to bltouch and the dive height + speeds G31 P25 X36 Y10 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 M143 H0 S120 ; set temperature limit for heater 0 to 120C 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 M308 S1 P"e0temp" Y"thermistor" T100000 B4138 ; 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 M143 H1 S280 ; set temperature limit for heater 1 to 280C M307 H1 B0 S1.00 ; disable bang-bang mode for heater and set PWM limit ; 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 S"E3D V6" 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 defined
M400 ; make sure everything has stopped before we make changes M574 X1 S3 ; set endstops to use motor stall M913 X25 ; reduce motor current to 50% to prevent belts slipping G91 ; use relative positioning G1 H1 X-300 F4000 ; move all carriages up 700mm, stopping at the endstops G90 ; back to absolute positioning M400 ; make sure everything has stopped before we reset the motor currents M913 X100 Y100 Z100 ; motor currents back to normal G1 X0 Y0 F2000 ; centre the head and set a reasonable feed rate M574 X2 Y2 Z2 S1 ; set endstops back to normal so that homedelta.g works
for some reason when i run the macro it moves the Y axis toward the back?
yes i know it makes more sense to use a physical endstop but it worked when i built the printer and havent easily left space to wire in the additional stop
M574 X1 S3 ; configure sensorless endstop for low end on X
M574 Y1 S1 P"ystop" ; configure active-high endstop for low end on Y via pin ystop
M915 X S5 F1 R0 ; sensorless homing parameters
On a CoreXY machine, to use stall detect homing on either X or Y, you must set the stall sensitivity on both the X and Y motors. S2 or S3 is usually about right.
I changed the code to
M574 X1 S3 ; configure sensorless endstop for low end on X M574 Y1 S1 P"ystop" ; configure active-high endstop for low end on Y via pin ystop M915 X:Y S5 F1 R0 ; sensorless homing parameters
it still runs into the x end and they pushes the y axis back
scratch last i changed the sensitivity to S2 and it worked but it also jogged the Y axis back slightly is this a belt tension issue? ps thanks for your help and the speedy responses