I don't understand why this is happening
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I don't know anything about Deltas so this is probably way off the mark but in your config.g you have the probe trigger value set to 600 so that'll be why it says triggered when the value is 688. So setting the probe trigger value (G31) higher might help. I'd guess the thing to do would be to see what the probe value is when it's just clear of the bed and again when it's just touching the bed and set the trigger value somewhere in between. Dunno, just a guess. If this sounds like a load of crap, please ignore it as Deltas "ain't my thing".
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I still think you have the M665 H parameter wrong. When the effector is as high as it will go because the carriages are up against the endstops, how high is the nozzle above the bed?
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Hi Deckingman
The P value which is 600 is the threshold for the electrical signal. When not triggered, it's around 311. When the switch is closed and triggered, it is 1000. The value is displayed on the Duest Interface Screen under Z-Probe
Hi DC42
From the nozzle (bottom of effector) to the bed is 306.5 which is the reading I orginally got when I started. It is a little lower right now because the carriages are just slightly below the metal tabs on the end stops. That is also the value that is entered in the "H" parameter as follows
M665 R105.6 L220 B85 H306.5
Thanks
Tim
Config.g[[language]] ; Configuration file for Duet WiFi (firmware version 1.20 or newer) ; executed by the firmware on start-up ; ; generated by RepRapFirmware Configuration Tool on Thu Jan 11 2018 11:17:44 GMT-0500 (Eastern Standard Time) ; General preferences M111 S0 ; Debugging off G21 ; Work in millimetres G90 ; Send absolute coordinates... M83 ; ...but relative extruder moves M555 P2 ; Set firmware compatibility to look like Marlin ; Automatic saving after power loss is not enabled ;*** The homed height is deliberately set too high in the following - you will adjust it during calibration. M665 R105.6 L220 B85 H306.5 ; Set delta radius, diagonal rod length, printable radius and homed height M666 X0 Y0 Z0 ; Put your endstop adjustments here, or let auto calibration find them M208 Z-0.1 S0 ; Set minimum Z ; Endstops M574 X2 Y2 Z2 S1 ; Set active low endstops M558 P1 H10 F120 T2400 I1 ; Set Z probe type to unmodulated and the dive height + speeds* G31 P500 X11 Y0 Z0.2 ; Set Z probe trigger value, offset and trigger height M557 R85 S20 ; Define mesh grid ; Drives M569 P0 S0 ; Drive 0 goes backwards M569 P1 S0 ; Drive 1 goes backwards M569 P2 S0 ; Drive 2 goes backwards M569 P3 S1 ; Drive 3 goes forwards M350 X16 Y16 Z16 E16 I0 ; Configure microstepping without interpolation M92 X80 Y80 Z80 E663 ; Set steps per mm M566 X1200 Y1200 Z1200 E1200 ; Set maximum instantaneous speed changes (mm/min) M203 X18000 Y18000 Z18000 E1200 ; Set maximum speeds (mm/min) M201 X1000 Y1000 Z1000 E1000 ; Set accelerations (mm/s^2) M906 X1000 Y1000 Z1000 E800 I30 ; Set motor currents (mA) and motor idle factor in per cent M84 S30 ; Set idle timeout ; Heaters M305 P0 T100000 B3950 C0 R4700 ; Set thermistor + ADC parameters for heater 0 M143 H0 S120 ; Set temperature limit for heater 0 to 120C M305 P1 T100000 B4388 C0 R4700 ; Set thermistor + ADC parameters for heater 1 M143 H1 S280 ; Set temperature limit for heater 1 to 280C ; Tools M563 P0 D0 H1 ; 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 ; Network M550 PFLSun Delta ; Set machine name M552 S1 ; Enable network M587 S"" P"" ; Configure access point and IP addresses. You can delete this line once connected M586 P0 S1 ; Enable HTTP M586 P1 S0 ; Disable FTP M586 P2 S0 ; Disable Telnet ; Fans M106 P0 S0 I0 F500 H-1 ; Set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned off M106 P1 S0 I0 F500 H-1 ; Set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned off M106 P2 S1 I0 F500 H1 T45 ; Set fan 2 value, PWM signal inversion and frequency. Thermostatic control is turned on ; Custom settings are not configured ; Miscellaneous T0 ; Select first tool -
Post your bed.g and your config-override.g too, please. Homedelta.g too.
You can also edit out your SSID and password from your last post.
Anything in config-override won't be used if you don't have a M501 at the end of config.g.
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config-override.g
[[language]] ; This is a system-generated file - do not edit ; Delta parameters M665 L218.000 R85.000 H306.500 B85.0 X0.000 Y0.000 Z0.000 M666 X0.000 Y0.000 Z0.000 A0.00 B0.00 ; Heater model parameters M307 H0 A90.0 C700.0 D10.0 S1.00 V0.0 B1 M307 H1 A340.0 C140.0 D5.5 S1.00 V0.0 B0 M307 H2 A340.0 C140.0 D5.5 S1.00 V0.0 B0 M307 H3 A340.0 C140.0 D5.5 S1.00 V0.0 B0 M307 H4 A340.0 C140.0 D5.5 S1.00 V0.0 B0 M307 H5 A340.0 C140.0 D5.5 S1.00 V0.0 B0 M307 H6 A340.0 C140.0 D5.5 S1.00 V0.0 B0 M307 H7 A340.0 C140.0 D5.5 S1.00 V0.0 B0Bed.g
[[language]] ; bed.g ; called to perform automatic delta calibration via G32 ; ; generated by RepRapFirmware Configuration Tool on Thu Jan 11 2018 11:17:44 GMT-0500 (Eastern Standard Time) M561 ; clear any bed transform ; Probe the bed at 6 peripheral and 3 halfway points, and perform 6-factor auto compensation ; Before running this, you should have set up your Z-probe trigger height to suit your build, in the G31 command in config.g. G30 P0 X0 Y84.2 H0 Z-99999 G30 P1 X66.01 Y38.11 H0 Z-99999 G30 P2 X66.01 Y-38.11 H0 Z-99999 G30 P3 X0 Y-84.2 H0 Z-99999 G30 P4 X-73.61 Y-42.5 H0 Z-99999 G30 P5 X-73.61 Y42.5 H0 Z-99999 G30 P6 X0 Y41.05 H0 Z-99999 G30 P7 X29.84 Y-17.23 H0 Z-99999 G30 P8 X-36.81 Y-21.25 H0 Z-99999 G30 P9 X0 Y0 H0 Z-99999 S6 ; Use S-1 for measurements only, without calculations. Use S4 for endstop heights and Z-height only. Use S6 for full 6 factors ; If your Z probe has significantly different trigger heights depending on XY position, adjust the H parameters in the G30 commands accordingly. The value of each H parameter should be (trigger height at that XY position) - (trigger height at centre of bed)Homedelta.g
[[language]] ; homedelta.g ; called to home all towers on a delta printer ; ; generated by RepRapFirmware Configuration Tool on Thu Jan 11 2018 11:17:44 GMT-0500 (Eastern Standard Time) G91 ; relative positioning ;*** Slow homing has been configured. Change F240 to F2400 below when your configuration is working G1 S1 X305 Y305 Z305 F240 ; move all towers to the high end stopping at the endstops (first pass) G1 X-5 Y-5 Z-5 F2400 S2 ; go down a few mm G1 S1 X10 Y10 Z10 F240 ; move all towers up once more (second pass) G1 Z-5 F2400 ; move down a few mm so that the nozzle can be centred G90 ; absolute positioning G1 X0 Y0 F2400 ; move X+Y to the centre -
tim can you home the delta measure the hight from the bed to the tip of the nozzle then do the following
G91
G1 z-100Remeasure the hight of the nozzle above the bed and report both figures Please
I have an idea of what is wrong and that test will confirm if I am right or not?
Doug
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Home:
Height from bed to nozzle 306.5
G91
G1 Z-100 226.5 -
So it's moved 80mm instead of 100mm. I suspect you are using 16-tooth pulleys, in which case your tower steps/mm should be set to 100 instead of 80.
Thanks to Doug for picking this up.
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That exactly what I was Suspecting the fact the nozzle was stopping 75mm wish short is around 25% short which would confirm the 16/20 tooth hypothesis
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I have nothing that tells me what the parameters are, but I have changed the numbers from 80 to 100
That looks so much better, thank you!!!!!
I still need to sort out probing the bed. It looks like the nozzle is about 10 or so above the bed, and I get a message for each probe attempt that says that the probe is already triggered. (Which is what I was expecting based on)
M558 P1 H10 F120 T2400 I1
The last time I took out the I1 at the end of that line, the hot end crashed the bed without triggering. I can physically press up on the nozzle and the physical switch will click and change state.
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M558 P1 H10 F120 T2400
Dropped the I1.
Homeall Great!
Auto Delta Configuration
Stops about 10mm above bed. Nozzle descends to probe, Does not stop. -
Sorry but I can't help there but if you would like to do the cal semi automatically you could change the probe type to P0 run the autodial routine and follow the on screen prompts
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Hi
Thanks. I will try that. I think I need to put the I1 back into M558. I suspect I should rewire the end stop for the Z Probe -
Sorry but I can't help there but if you would like to do the cal semi automatically you could change the probe type to P0 run the autodial routine and follow the on screen prompts
Have you tested the Z probe? See https://duet3d.com/wiki/Test_the_Z_probe.
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By default, the metal switch tab is pressed against the little red switch button. The button is pushed in. The light on the board is off
When the nozzle contacts the bed, I hear the click and the light comes on and the metal tab along with the little red button switch are released.
The wiring is to the two outside terminals on the switch.
M558 P1 H10 F120 T2400 I1
When it probes, it reports that it is already triggered.
If I remove the I1 from the end of the M558 Line, the message is that the probe was not triggered, and the probe crashes the bed.
Should I move 1 wire to the center pin from the outside pin and would it matter which wire I moved?
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You should be using P4 if you are using the E0 Stop connector for your Z probe.
Increase the X, Y and Z numbers in your G1 S1 X305 Y305 Z305 bed.g file to 400+ to keep from having to double tap the home button when the effector is on the build plate and close to the edge.
Don't forget to add M501 to the end of your config.g to use the settings you save in config-override.
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Use M558 P4 as number40fan says, and remove the I1.
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Ok
I removed the I1 from the M558. The nozzle drops down to about 10mm above the bed, and moves to all of the expected locations. It does not move down to contact the bed. I get a message for every probe point that was to be used indicating that the Z probe was already triggered.The value reported for the Z probe is 1000
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Did you try it with the I1? With DWC open, change the I1 setting and reboot. Then while watching the Z Probe reading the in the top right hand corner, see if it sits at 0 when the Z probe is not touched and goes up when touched (with your hand).
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With the I1 back in, the probe value is 0
If I touch the hot end to trigger the probe, the value changes to 1000
