BLTouch Initializing but Not Homing
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Hi Everyone, I've been struggling with my BLTouch for a while now and I'm not sure what to try next. I've looked through the forums and no luck yet. Thank you in advance to any help, you guys are awesome!
I'm using BLTouch 3 and Duet 2 wifi RRF 3.3. When I turn on my printer the BLTouch initializes and deploys/retracts twice, when that's complete it has a steady red light.
I can deploy/retract the probe manually using M401 and M402 commands. When I manually deploy the probe the blue light turns on.
The problem is after I've homed the X and Y axis and go to home the Z axis, it does not home. I can press on the probe and it does not stop the Z axis. When the probe goes to home the Z axis the probe deploys and the blue light turns on as expected, but it just doesnt stop the printer.
My config.g code:
; Configuration file for Duet WiFi (firmware version 3.3) ; executed by the firmware on start-up ; ; generated by RepRapFirmware Configuration Tool v3.3.10 on Thu Feb 24 2022 18:43:24 GMT-0800 (Pacific Standard Time) ; General preferences M575 P1 S1 B57600 ; enable support for PanelDue G90 ; send absolute coordinates... M83 ; ...but relative extruder moves M550 P"Zender" ; 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 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 X128 Y128 Z128 E128 I0 ; configure microstepping without interpolation M92 X700.55 Y700.55 Z3103.00 E200.00 ; set steps per mm M566 X6000.00 Y6000.00 Z60.00 E120.00 ; set maximum instantaneous speed changes (mm/min) M203 X18000.00 Y18000.00 Z300.00 E1200.00 ; set maximum speeds (mm/min) M201 X500.00 Y500.00 Z20.00 E250.00 ; set accelerations (mm/s^2) M906 X1500 Y1500 Z1200 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 X200 Y210 Z300 S0 ; set axis maxima ; Endstops M574 X1 S1 P"xstop" ; configure switch-type (e.g. microswitch) endstop for low end on X via pin xstop M574 Y2 S1 P"ystop" ; configure switch-type (e.g. microswitch) endstop for high end on Y via pin ystop 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 Y30 Z2.5 ; set Z probe trigger value, offset and trigger height M557 X15:190 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 B0 S1.00 ; disable 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 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 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 S1 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 H-1 ; set fan 1 value. Thermostatic control is turned off ; Tools M563 P0 D0 H1 F0 ; define tool 0, F was -1 now 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 definedHomeall.g:
; called to home all axes ; ; generated by RepRapFirmware Configuration Tool v3.3.10 on Thu Feb 24 2022 18:43:24 GMT-0800 (Pacific Standard Time) G91 ; relative positioning G1 H2 Z5 F6000 ; lift Z relative to current position G1 H1 X-205 Y215 F1800 ; move quickly to X and Y axis endstops and stop there (first pass) G1 H2 X5 Y-5 F6000 ; go back a few mm G1 H1 X-205 Y215 F360 ; move slowly to X and Y axis endstops once more (second pass) G90 ; absolute positioning G1 X15 Y-15 F6000 ; go to first bed probe point and home Z G30 ; home Z by probing the bed ; Uncomment the following lines to lift Z after probing ;G91 ; relative positioning ;G1 Z5 F100 ; lift Z relative to current position ;G90 ; absolute positioning code_textHomez.g:
; homez.g ; called to home the Z axis ; ; generated by RepRapFirmware Configuration Tool v3.3.10 on Thu Feb 24 2022 18:43:24 GMT-0800 (Pacific Standard Time) G91 ; relative positioning G1 H2 Z5 F6000 ; lift Z relative to current position G90 ; absolute positioning G1 X15 Y-15 F6000 ; go to first probe point G30 ; home Z by probing the bed ; Uncomment the following lines to lift Z after probing G91 ; relative positioning G1 Z5 F100 ; lift Z relative to current position G90 ; absolute positioningM1222 Report:
M122 === Diagnostics === RepRapFirmware for Duet 2 WiFi/Ethernet version 3.3 (2021-06-15 21:44:54) running on Duet WiFi 1.02 or later Board ID: 0JD0M-9X6JA-JUNSN-6J9F8-3S86R-TUR7U Used output buffers: 3 of 24 (12 max) === RTOS === Static ram: 23876 Dynamic ram: 75016 of which 12 recycled Never used RAM 15512, free system stack 184 words Tasks: NETWORK(ready,13.7%,243) HEAT(delaying,0.0%,330) Move(notifyWait,0.1%,364) MAIN(running,85.8%,441) IDLE(ready,0.4%,29), total 100.0% Owned mutexes: WiFi(NETWORK) === Platform === Last reset 00:03:43 ago, cause: software Last software reset at 2022-03-31 20:24, reason: User, GCodes spinning, available RAM 12272, slot 0 Software reset code 0x0003 HFSR 0x00000000 CFSR 0x00000000 ICSR 0x0041f000 BFAR 0xe000ed38 SP 0x00000000 Task MAIN Freestk 0 n/a Error status: 0x00 Aux0 errors 0,0,0 Step timer max interval 0 MCU temperature: min 26.6, current 26.8, max 27.6 Supply voltage: min 12.2, current 12.3, max 12.6, under voltage events: 0, over voltage events: 0, power good: yes Heap OK, handles allocated/used 0/0, heap memory allocated/used/recyclable 0/0/0, gc cycles 0 Driver 0: position 0, standstill, SG min/max not available Driver 1: position 0, standstill, SG min/max not available Driver 2: position 0, standstill, SG min/max not available Driver 3: position 0, standstill, SG min/max not available Driver 4: position 0, standstill, SG min/max not available Driver 5: position 0 Driver 6: position 0 Driver 7: position 0 Driver 8: position 0 Driver 9: position 0 Driver 10: position 0 Driver 11: position 0 Date/time: 2022-03-31 20:28:40 Cache data hit count 4294967295 Slowest loop: 4.77ms; fastest: 0.17ms I2C nak errors 0, send timeouts 0, receive timeouts 0, finishTimeouts 0, resets 0 === Storage === Free file entries: 10 SD card 0 detected, interface speed: 20.0MBytes/sec SD card longest read time 3.3ms, write time 0.0ms, max retries 0 === Move === DMs created 83, maxWait 0ms, bed compensation in use: none, comp offset 0.000 === MainDDARing === Scheduled moves 0, completed moves 0, hiccups 0, stepErrors 0, LaErrors 0, Underruns [0, 0, 0], CDDA state -1 === AuxDDARing === Scheduled moves 0, completed moves 0, hiccups 0, stepErrors 0, LaErrors 0, Underruns [0, 0, 0], CDDA state -1 === Heat === Bed heaters = 0 -1 -1 -1, chamberHeaters = -1 -1 -1 -1 === GCodes === Segments left: 0 Movement lock held by null HTTP is idle in state(s) 0 Telnet is idle in state(s) 0 File is idle in state(s) 0 USB is idle in state(s) 0 Aux is idle in state(s) 0 Trigger is idle in state(s) 0 Queue is idle in state(s) 0 LCD is idle in state(s) 0 Daemon is idle in state(s) 0 Autopause is idle in state(s) 0 Code queue is empty. === Network === Slowest loop: 15.59ms; fastest: 0.00ms Responder states: HTTP(0) HTTP(0) HTTP(0) HTTP(0) FTP(0) Telnet(0), 0 sessions HTTP sessions: 1 of 8 - WiFi - Network state is active WiFi module is connected to access point Failed messages: pending 0, notready 0, noresp 0 WiFi firmware version 1.26 WiFi MAC address 48:3f:da:a6:c4:5c WiFi Vcc 3.39, reset reason Power up WiFi flash size 2097152, free heap 25112 WiFi IP address 192.168.1.44 WiFi signal strength -47dBm, mode 802.11n, reconnections 0, sleep mode modem Clock register 00002002 Socket states: 4 0 0 0 0 0 0 0M98 P"config.g"
HTTP is enabled on port 80
FTP is disabled
TELNET is disabledI have the BLTouch plugged into pins 1,2, and 8 (heater 3) as shown in the setup wiki.
Again thank you to anyone who can help!
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The self-test the probe does at power on tells you the probe is getting power.
The fact that M401/M402 work tells you the probe is responding to the PWM signal generated on the exp.heater3 pin, as specified in the M950 command.
I gather the probe pin retracts if you touch the pin when deployed.
The fact that triggering the deployed probe does not halt Z movement suggests the signal from the probe is not reaching the zprobe.in pin, as specified in the M558 command.
What is the Z probe reading in the DWC?
Have you verified continuity from the probe to the zprobe.in pin?
Frederick
Printers: A FT-5 with the 713 upgrade bits, a custom MarkForged style, a small Utilmaker style, a small CoreXY from kit and a E3D MS/TC setup. Various hotends. Using Duets (2 and 3) running 3.4.6
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Photo of wiring?
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@fcwilt Thanks for the quick reply!
The probe does retract if you touch it when its deployed, and then when I touch it again it will start flashing red and the z will continue to move closer.
- DWC says:
M558
Z Probe 0: type 9, input pin zprobe.in, output pin nil, dive height 5.0mm, probe speeds 120,120mm/min, travel speed 6000mm/min, recovery time 0.00 sec, heaters normal, max taps 1, max diff 0.032.- How do I verify continuity?
Thanks again! Sorry still very new to Reprap firmware.
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Wow... just realized my polarity was backwards, green and blue needed to switch. Sorry for the dumb questions.
Thank you for helping guys! -
undefined Phaedrux marked this topic as a question
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undefined Phaedrux has marked this topic as solved
