I don't understand why this is happening

number40fan

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.

TimVukman

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 B0

Bed.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

Dougal1957

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-100

Remeasure 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

TimVukman

Home:
Height from bed to nozzle 306.5
G91
G1 Z-100 226.5

dc42

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.

Dougal1957

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

TimVukman

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.

TimVukman

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.

Dougal1957

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

TimVukman

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

dc42

@Dougal1957:

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.

TimVukman

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?

number40fan

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.

dc42

Use M558 P4 as number40fan says, and remove the I1.

TimVukman

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

number40fan

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).

TimVukman

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

dc42

@TimVukman:

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

That is the correct behaviour. What problem (if any) are you having now?

TimVukman

Wow!!!

Fantastic!!!!!! Auto Delta Calibration just completed a perfect cycle. Hot end dropped to about 10mm above be, and then gently touched down at 10 specific points, clicked the switch and moved on!!!

Thanks so much for the support and the help.

Now I can try to calibrate the extruder which is either putting out too much filament, or my layer height settings are off, or…....