Duet 2 v1.02 not responding
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@dc42
Can you help me with bed leveling in my Tractus 3D t650P. After getting the firmware right and configuration my Z is off. When Z=11 then crashes the nozzle in the bed. I made may changes with G92 Z0 etc. G30 S-1->G31 and M500/M999. With G31 z-10.85 nozzle is still crashing with Z<11 -
Were you able to identify what kind of probe is actually being used? Can you point to a piece of hardware on the printer and say "this is the probe"?
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@Phaedrux
I Will dismantle the bottom to see.
I managed to print something unless the nozzle hitted the bed. But It was very small and didn’t make It as a benchy. Looked the size of 20% of the suppoost size. -
@Phaedrux @droftarts
you tell me haha
Do you know how I set this right in the config.g?
Please help me to get the calibration right. Every time I push "delta calibration" my previous (G92 Z0) is changed to something else (Z=0 but nozzle is about 6mm above bed). -
@droftarts
This is what is going wrong with printing. It had to be a sqaure 50mmx50mm h=20mm
Result 20mm x 15mm
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I think that's probably a bed attached piezo probe. It detects the nozzle contact tap.
You won't be able to print anything until you have the probe configured and are able to complete a delta calibration and bed mesh. Without an accurate mathematical model of your delta nozzle positioning won't be accurate enough.
Can you get a clearer shot of that little PCB? As well as a photo and description of where the wires from that PCB are connected to your Duet? With that information I can hopefully guide you in configuring it.
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Also please share your entire current config.g and homedelta.g and bed.g
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@thomasvanderwal sorry, I’m away on holiday this week.
Did you check that, from homing, when you move down 50mm in Z, it actually moves 50mm? Measure with a ruler. This is to check your steps per mm (M92).Ian
Bed-slinger - Mini5+ WiFi/1LC | RRP Fisher v1 - D2 WiFi | Polargraph - D2 WiFi | TronXY X5S - 6HC/Roto | CNC router - 6HC | Tractus3D T1250 - D2 Eth
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The 3 wires go to the E0 Endstop on the board.
The stepper for extrusion and retracting is attached to E0 Stepper
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@droftarts
It seems that with 50mm the nozzle only goes 25mm down
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@thomasvanderwal change this line in config.g:
M92 X80 Y80 Z80 ; configure steps per mmto
M92 X160 Y160 Z160 ; configure steps per mmThen do the same test again.
Most likely you have 0.9° stepper motors (400 steps per rotation, check by looking on the back of the motor) and what looks like 20 tooth pulleys (you can check by counting the teeth) and GT2 belt (2mm belt pitch). Steps per mm = (motor_steps_per_rev * driver_microstep) / (belt_pitch_mm * pulley_number_of_teeth) = (400 x 16) / (2 x 20) = 160
Ian
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@thomasvanderwal said in Duet 2 v1.02 not responding:
;G31 Z-0.700You'll want to configure the probe offset. In your case the X and Y distance is zero, because the nozzle tip is the probe point. The Z value will need to be calibrated. -0.7 may be accurate. The value is negative because the nozzle is pressing into the surface of the bed slightly.
G31 K0 X0 Y0 Z-0.7The steps for testing and calibrating a probe are here: https://docs.duet3d.com/en/User_manual/Connecting_hardware/Z_probe_testing
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@Phaedrux
After delta calibration (button) the z is made 0 again. But The nozzle tip is about 6mm above printbed.
I did :
M564 S0
G30 S-1
G92 Z0
G31 adjustment in the code
many times. After calibrating it is again off.
I think my height in config (override config and homedelte) of Z320mm is wrong. I also tried 300, 310, 315. It is still going wrong.
What am I missing?Spec of tractus 3d t650p says:
Build Volume with Lexan (mm) 170 diameter x 285 height (315 center)
Build height 300 mm (11.8”)When I print benchy. The print is not what it should be...
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@Phaedrux It's still not clear to me what kind of probe I have got. If I have the configuration right for the probe I have declared now (see history). Something is not right. Also mesh compensation is doing strange things. I think I declared it right for my Delta : M557 R100 S10. But the nozzle goes down and to the x axis and off the bed.
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Did you change your steps per mm as droftarts suggested?
M564 S0
G30 S-1
G92 Z0Can you describe more clearly exactly how you're measuring the trigger height for the probe?
Have you gone through the probe testing and calibration steps from that link earlier? For instance, have you confirmed that you can stop Z movement during a G30 by taping the bed manually? As in, does the probe seem to be working?
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@Phaedrux when I push a button in the webbrowser like z-50 then the nozzle seems to go 50mm down.
I followed the step as in the document for the Trigger height.
M561
M564 S0
G92 Z0
Jog the head up by 5 to 10mm
G30 S-1
Then g31 and then that value into the config.g. When I perform a delta calibration afterwards the nozzle seems to be 5mm above the bed.
Mesh calibration is not working proberly because I don’t know how that is working.
M557 R100 S20 is What I created. -
@thomasvanderwal said in Duet 2 v1.02 not responding:
Then g31 and then that value into the config.g.
What value do you get?
How are you doing the delta calibration? Is there a G30 at the center of the bed afterwards to establish Z0?
Have you seen this page yet?
https://docs.duet3d.com/en/User_manual/Tuning/Delta_calibration -
@Phaedrux Yes, I changed the mm steps.
*Have you gone through the probe testing and calibration steps from that link earlier?
I tried that but it seems I'm missing something.For instance, have you confirmed that you can stop Z movement during a G30 by taping the bed manually? As in, does the probe seem to be working?
Aha. One side it's not responding. The plate has 3 blocks underneath. At 2 sides the nozzle stops.
I will check the wiring again.Triggerheight testing:
G30 S-1
Stopped at height -0.375 mmSo I did G92 Z0. After that G31 command gives:
Z probe 0: current reading 0, threshold 500, trigger height -4.700, offsets X0.0 Y0.0 -
@Phaedrux I'm getting close.
The print bed is still a problem. It is not flat. Te clips are bend.
I printed something and it looked like it. But still not very good.
The calibrating is not good yet due to the print bed.
