BL Touch randomly deploys itself after update.
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So recently I updated RRF to V3.3 (form 3.1.1) on my Duet 2 WiFi. Since update (first print), without changing configuration files (only changed amount of probing number), probe started randomly deploying itself, sometimes it just deploys , sometimes it deploys and retracts like mad. It was working fine for more than year and a half. It happens only when I setup print and printer is heating, usually it deploys once midheat and stays like that untill z-homing. When I don't start print, but manually set heating (bed and hotend) probe starts delpoying and retracting like mad. So far, probe never deployed while printing.
I'm marking it as firmware thing, since it happend just after update while hardware setup should be fine. -
undefined Phaedrux moved this topic from Firmware developers
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@alcomatt said in BL Touch randomly deploys itself after update.:
t happens only when I setup print and printer is heating, usually it deploys once midheat and stays like that untill z-homing. When I don't start print, but manually set heating (bed and hotend) probe starts delpoying and retracting like mad.
Sounds like interference. Are the bltouch wires running closely to the heater wires?
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@phaedrux Well, bltouch wires are parallel to hotend heater, but it happens at stage when bed is being heated, while wires from heating bed are routed different way. When I turn on hotend heater (but only manually) it gets worse. Another thing is that before PID starts working (before being close to set temperature), as far as I know, there should be only DC current that shouldn't cause any interferences. Also it's working like that for months without any issues and such problem doesn't occur while printing.
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well one way to check if it's firmware would be to roll back to your previous version.
What kind of bed heater is it?
Can you post your full config?
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@phaedrux It's classic aluminium pcb bed heater similar to one from picture below.
My config is
; Configuration file for Duet WiFi (firmware version 3) ; executed by the firmware on start-up ; ; generated by RepRapFirmware Configuration Tool v3.1.4 on Sun Oct 04 2020 13:36:35 GMT+0200 (czas środkowoeuropejski letni) ; General preferences G90 ; send absolute coordinates... M83 ; ...but relative extruder moves M550 P"notreallyaprintername" ; 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 ; 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 S1 ; physical drive 3 goes forwards M584 X0 Y1 Z2 E3 ; set drive mapping M350 X16 Y16 Z16 E16 I1 ; configure microstepping with interpolation M92 X100.00 Y100.00 Z400.00 E415.00 ; set steps per mm M566 X600.00 Y600.00 Z12.00 E270.00 ; set maximum instantaneous speed changes (mm/min) M203 X15000.00 Y15000.00 Z720.00 E7200.00 ; set maximum speeds (mm/min) M201 X2500.00 Y2500.00 Z500.00 E5000.00 ; set accelerations (mm/s^2) M906 X700 Y700 Z550 E700 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 X200 Y200 Z200 S0 ; set axis maxima ; Endstops M574 X1 S1 P"xstop" ; configure active-high endstop for low end on X via pin xstop M574 Y2 S1 P"ystop" ; configure active-high endstop for low end on Y via pin ystop M574 Z2 S2 ; Z-Probe M950 S0 C"exp.heater3" M558 P9 C"^zprobe.in" H5 F120 T6000 A3 ; set Z probe type to bltouch and the dive height + speeds G31 P500 X30 Y0 Z0.88 ; set Z probe trigger value, offset and trigger height Z0.77 M557 X15:180 Y15:200 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 S100 ; set temperature limit for heater 0 to 100C 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 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 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 M572 D0 S0.075 ; pressure advance S0.075 @0.6 S0.048 ;LED M950 P2 C"e1heat" ; led ;load data M501;; deployprobe.g ; called to deploy a physical Z probe ; ; generated by RepRapFirmware Configuration Tool v3.1.4 on Sun Oct 04 2020 13:36:35 GMT+0200 (czas środkowoeuropejski letni) ; insert codes for deploying the Z probe here M280 P0 S10 I1 ; deploy BLTouchWill try doing roll back in free time and see results.
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@phaedrux said in BL Touch randomly deploys itself after update.:
well one way to check if it's firmware would be to roll back to your previous version.
What kind of bed heater is it?
Can you post your full config?
So I tried downgrading to 3.1.1, checked also 3.2 and 3.2.2 - everything works fine as it should. After updating to 3.3 problem occurs immediately.
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@alcomatt said in BL Touch randomly deploys itself after update.:
M280 P0 S10 I1
I don't see anything wrong with your config other than the deploy and retract macros don't need
I1on the M280 command.@alcomatt said in BL Touch randomly deploys itself after update.:
When I don't start print, but manually set heating (bed and hotend) probe starts delpoying and retracting like mad.
This part is very strange. Makes me think interference, but I'm not sure why the behaviour would change with fw 3.3.
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@phaedrux If it's necessary I can do video showing the problem. I might also try updating to 3.4 beta and see results.
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I am facing the same problem with Release 3.4.2rc1. Did you solve the issue?.
For me it prints OK, but if I heat the bed manually the probe deploys/retract like mad. -
@carlosspr said in BL Touch randomly deploys itself after update.:
if I heat the bed manually the probe deploys/retract like mad.
That definitely sounds like interference.
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@Phaedrux Hi you need to install capacitor 10uf for gnd and signal. I had the same issue with and 3dTouch sensor and saw this the same with BLTouch sensor.
