More problems

[Phaedrux]

@invertmast said in More problems:

3.4.1

Try updating to 3.4.6

Can you post a photo of the setup?

[invertmast]

@Phaedrux

https://forum.duet3d.com/assets/uploads/files/1663515547227-image-resized.jpg

[invertmast]

back to no data received from the sensor, even though prior to the print the led's are flashing as expected and during the print the led is doing a quick green flicker, to almost solid.

[T3P3Tony]

@invertmast if there is so data received, but the sensor LEDS are working as expected, double check the singal wire from the sensor to the board.

[invertmast]

@T3P3Tony

I had to redo some connectors that seemed fine, but its back to providing data again.

I'm still having the problem that it will give obvious wrong min/max values.

its not like the Original amount posted, but its currently showing min 0%/Max 118%. its obviously not 0% as you can visibly see the filament moving.

m591 d0
Duet3D rotating magnet filament monitor v4 on pin e0stop, disabled, sensitivity 27.50mm/rev, allow 40% to 130%, check printing moves every 8.0mm, version 4, mag 132 agc 59, measured sensitivity 26.29mm/rev, min 0% max 118% over 22456.2mm

less than an hour prior to that, it was reporting as follows:

m591 d0
Duet3D rotating magnet filament monitor v4 on pin e0stop, enabled, sensitivity 27.50mm/rev, allow 40% to 130%, check printing moves every 8.0mm, version 4, mag 130 agc 58, measured sensitivity 26.19mm/rev, min 83% max 135% over 4179.3mm

This sensor has been nothing but unreliable since it was purchased.

[T3P3Tony]

@invertmast I am glad you got the wiring issue sorted. please change to 3mm instead of 8mm sampling - that's more standard and see how you get on. I suspect that 8mm may give you a bigger window before it gathers more data.

[invertmast]

@T3P3Tony said in More problems:

@invertmast I am glad you got the wiring issue sorted. please change to 3mm instead of 8mm sampling - that's more standard and see how you get on. I suspect that 8mm may give you a bigger window before it gathers more data.

That made zero change, unfortunately. Looking at the physical print, it looks as expected. no gaps, no clicking of the extruder as if it was skipping.

8/30/2023, 10:34:27 AM 	m591 d0
Duet3D rotating magnet filament monitor v4 on pin e0stop, disabled, sensitivity 27.50mm/rev, allow 40% to 130%, check printing moves every 3.0mm, version 4, mag 130 agc 58, measured sensitivity 26.33mm/rev, min 96% max 110% over 967.3mm

8/30/2023, 10:44:27 AM 	m591 d0
Duet3D rotating magnet filament monitor v4 on pin e0stop, disabled, sensitivity 27.50mm/rev, allow 40% to 130%, check printing moves every 3.0mm, version 4, mag 131 agc 59, measured sensitivity 26.35mm/rev, min 56% max 110% over 6692.2mm

8/30/2023, 11:38:47 AM 	m591 d0
Duet3D rotating magnet filament monitor v4 on pin e0stop, disabled, sensitivity 27.50mm/rev, allow 40% to 130%, check printing moves every 3.0mm, version 4, mag 131 agc 58, measured sensitivity 26.39mm/rev, min -56% max 110% over 37258.5mm

[T3P3Tony]

@invertmast if the print is looking fine and you are seeing that degradation of reporting then my best guess is an issue with the housing, allowing the filament to slip occasionally, or the magnetic sensor assembly to stick occasionally which over time adds up to this inconsistency, It may well be predominantly on retracts (as those are the fastest moves normally.) but not necessarily. Worth tying the stock housing if possible. also look at idler tension within the existing housing.

[invertmast]

@T3P3Tony said in More problems:

@invertmast if the print is looking fine and you are seeing that degradation of reporting then my best guess is an issue with the housing, allowing the filament to slip occasionally, or the magnetic sensor assembly to stick occasionally which over time adds up to this inconsistency, It may well be predominantly on retracts (as those are the fastest moves normally.) but not necessarily. Worth tying the stock housing if possible. also look at idler tension within the existing housing.

Yea i've tried that too. I have two of these sensors, one was a full kit w/ housing (which is on my other printer) and then this one that didn't come with the housing. I've used this sensor with the other ones housing and it still has the same problem. Matter of fact, the other sensor has a very similar problem as well that is intermittent.

With this particular printer, the retraction settings are pretty slow. 32mm/sec and 3mm retraction for ooze control, outside of that, i dont use retraction much (any) as the printer is designed for large, medium quality prints (i use a 1.2mm nozzle, .6mm layers, 32-38mm/sec print speed, 250*c extruder temp w/ PLA). the printer in itself is just slow.

[invertmast]

I took the time today to swap filament monitors between printers. The Lo-Fi case and the Duet cased one.
The Lo-Fi cased monitor is the one i have been having intermittent issues with since getting it together (on the Big printer), Even with the original resin printed case (i had to print the case though) it gave me problems. That monitor with no changes except moving it from the Big printer to the XY printer now gives acceptable performance. (Oddly enough, the Duet cased monitor originally on the XY printer was a complete monitor w/ case (as from duet) and was never very reliable on the xy printer). The Duet cased monitor now on the Big Printer is showing consistent extrusion rates.

To Clarify, the original post is in regards to the Big printer and the Lo-Fi case monitor.

The Current setup is the Big Printer w/ the Duet case monitor and its giving these results.

9/4/2023, 12:43:58 PM 	m591 d0
Duet3D rotating magnet filament monitor v3 on pin e0stop, enabled, sensitivity 27.50mm/rev, allow 40% to 130%, check printing moves every 3.0mm, version 3, mag 128 agc 82, measured sensitivity 27.76mm/rev, min 43% max 116% over 22263.1mm

m591 d0
Duet3D rotating magnet filament monitor v3 on pin e0stop, enabled, sensitivity 27.50mm/rev, allow 40% to 130%, check printing moves every 3.0mm, version 3, mag 132 agc 76, measured sensitivity 27.87mm/rev, min 43% max 116% over 158495.8mm

The XY Printer w/ the Lo-Fi case monitor is providing these results:

9/4/2023, 2:11:34 PM 	m591 d0
Duet3D rotating magnet filament monitor v4 on pin e0stop, enabled, sensitivity 27.00mm/rev, allow 75% to 120%, check printing moves every 10.0mm, version 4, mag 131 agc 60, measured sensitivity 26.45mm/rev, min 78% max 106% over 552.3mm

One filament pause shortly after the above, then this.

9/4/2023, 3:54:13 PM 	m591 d0
Duet3D rotating magnet filament monitor v4 on pin e0stop, disabled, sensitivity 27.00mm/rev, allow 75% to 120%, check printing moves every 10.0mm, version 4, mag 131 agc 59, measured sensitivity 25.08mm/rev, min 95% max 104% over 8913.7mm

I'm not sure what or why things are inconsistent or why they are seemingly working fine on opposite printers, but i'll take it for now.. hopefully it stays this way.

[invertmast]

@invertmast

As expected, the problems have begun again. No changes have been made and it printed well for 6 days with no significant problems. Yesterday i had to disable the MFM due to it continuously pausing due to either to little or to much movement, even though the print looks fine (no under or over extrusion). The latest print has been running for nearly 12 hours straight and this is what the MFM reports:

This is the MFM in the Duet printed case. NOT the Lofi case that i originally had problems with (that sensor is still working favorably in my other printer).

9/10/2023, 8:26:20 PM 	m591 d0
Duet3D rotating magnet filament monitor v3 on pin e0stop, disabled, sensitivity 28.00mm/rev, allow 10% to 150%, check printing moves every 5.0mm, version 3, mag 129 agc 78, measured sensitivity 27.41mm/rev, min -137% max 325% over 354792.8mm

The print prior to that one gave this at its conclusion:

9/10/2023, 1:31:27 AM 	Duet3D rotating magnet filament monitor v3 on pin e0stop, disabled, sensitivity 28.00mm/rev, allow 10% to 150%, check printing moves every 5.0mm, version 3, mag 131 agc 74, measured sensitivity 27.73mm/rev, min -192% max 276% over 487574.2mm

Finished printing file 0:/gcodes/RWB.gcode, print time was 13h 32m

[invertmast]

The inconsistency of reliability continues. Here is the complete list of MFM issues from the last print, which was only 15 hours long. Ordered in Newest to oldest down. Print in duration of 20+ hours have significantly more errors and erroneous large deviations in Mix and Max values.

9/19/2023, 5:12:22 PM 	Duet3D rotating magnet filament monitor v3 on pin e0stop, disabled, sensitivity 28.00mm/rev, allow 10% to 150%, check printing moves every 5.0mm, version 3, mag 128 agc 83, measured sensitivity 26.48mm/rev, min 75% max 108% over 6670.2mm

Finished printing file 0:/gcodes/HarDR.gcode, print time was 15h 36m
9/19/2023, 4:52:18 PM 	m591 d0 s0
9/19/2023, 2:41:43 PM 	Printing paused at X386.5 Y230.1 Z406.1
Duet3D rotating magnet filament monitor v3 on pin e0stop, enabled, sensitivity 28.00mm/rev, allow 10% to 150%, check printing moves every 5.0mm, version 3, mag 132 agc 75, measured sensitivity 29.15mm/rev, min 71% max 385% over 204761.5mm
9/19/2023, 2:41:35 PM 	Filament error on sensor 0 - Paused
Filament error on extruder 0: tooMuchMovement
Resume state saved
9/19/2023, 1:40:04 PM 	SensorError- sensor : 0 Continuing to Print
9/19/2023, 10:51:12 AM 	SensorError- sensor : 0 Continuing to Print
9/19/2023, 9:28:31 AM 	SensorError- sensor : 0 Continuing to Print
9/19/2023, 8:59:09 AM 	M24
Printing resumed
Error: Bad command: X196.352 Y251.982 E0.40795
9/19/2023, 5:31:13 AM 	Printing paused at X196.9 Y248.5 Z269.3
Duet3D rotating magnet filament monitor v3 on pin e0stop, enabled, sensitivity 28.00mm/rev, allow 10% to 150%, check printing moves every 5.0mm, version 3, mag 132 agc 75, measured sensitivity 29.81mm/rev, min 62% max 529% over 320615.8mm
9/19/2023, 5:31:05 AM 	Filament error on sensor 0 - Paused
Filament error on extruder 0: tooMuchMovement
Resume state saved
9/19/2023, 5:17:56 AM 	SensorError- sensor : 0 Continuing to Print
9/19/2023, 4:05:46 AM 	Connection established
9/19/2023, 4:05:45 AM 	Connection interrupted, attempting to reconnect...
HTTP request timed out
9/19/2023, 12:40:50 AM 	SensorError- sensor : 0 Continuing to Print
9/19/2023, 12:22:55 AM 	SensorError- sensor : 0 Continuing to Print
9/18/2023, 11:23:58 PM 	m591 d0
Duet3D rotating magnet filament monitor v3 on pin e0stop, enabled, sensitivity 28.00mm/rev, allow 10% to 150%, check printing moves every 5.0mm, version 3, mag 130 agc 82, measured sensitivity 30.88mm/rev, min 64% max 121% over 96786.3mm
9/18/2023, 10:22:53 PM 	SensorError- sensor : 0 Continuing to Print
9/18/2023, 8:42:13 PM 	Printing paused at X386.5 Y305.9 Z1.7
Duet3D rotating magnet filament monitor v3 on pin e0stop, enabled, sensitivity 28.00mm/rev, allow 10% to 150%, check printing moves every 5.0mm, version 3, mag 133 agc 75, measured sensitivity 27.93mm/rev, min 6% max 111% over 25352.6mm
9/18/2023, 8:42:05 PM 	Filament error on sensor 0 - Paused
Filament error on extruder 0: tooLittleMovement
Resume state saved
9/18/2023, 8:00:07 PM 	Printing paused at X386.6 Y324.7 Z0.5
Duet3D rotating magnet filament monitor v3 on pin e0stop, enabled, sensitivity 28.00mm/rev, allow 10% to 150%, check printing moves every 5.0mm, version 3, mag 129 agc 83, measured sensitivity 27.87mm/rev, min -1% max 108% over 4905.6mm
9/18/2023, 7:59:59 PM 	Filament error on sensor 0 - Paused
Filament error on extruder 0: tooLittleMovement
Resume state saved
9/18/2023, 7:53:53 PM 	m591 d0
Duet3D rotating magnet filament monitor v3 on pin e0stop, enabled, sensitivity 28.00mm/rev, allow 10% to 150%, check printing moves every 5.0mm, version 3, mag 132 agc 79, measured sensitivity 29.38mm/rev, min 81% max 112% over 1560.8mm
9/18/2023, 7:49:36 PM 	M32 "0:/gcodes/HarDR.gcode"
File 0:/gcodes/HarDR.gcode selected for printing

[timschneider]

@invertmast
I had similiar problems with different versions of the MFM.
Double check the bearings, we had two broken bearings of the sense wheel rod - they were not running smooth - which causes the sense wheel to get broken/worn out. Due to the fact, that you already checked and changed the housing, I think it is not related to the housing.
Double check your wiring/crimping and your firmware. We had the same problems with older firmware, 3.4.6 is working.

But anyhow this is not the reason for the ridiculously large min/max values and the measured sensitivity.

I checked the code and the measured sensitiviy is calulated as follows:

float RotatingMagnetFilamentMonitor::MeasuredSensitivity() const noexcept
{
	return totalExtrusionCommanded/totalMovementMeasured;
}

the reset code is doing the following

void RotatingMagnetFilamentMonitor::Reset() noexcept
{
	extrusionCommandedThisSegment = extrusionCommandedSinceLastSync = movementMeasuredThisSegment = movementMeasuredSinceLastSync = 0.0;
	magneticMonitorState = MagneticMonitorState::idle;
	haveStartBitData = false;
	synced = false;							// force a resync
}

so maybe the reset should also reset the following variables @dc42

totalMovementMeasured
totalExtrusionCommanded

'>> EDIT: nvm

these values are reset via the idle status

case MagneticMonitorState::idle:
		magneticMonitorState = MagneticMonitorState::calibrating;
		totalExtrusionCommanded = amountCommanded;
		totalMovementMeasured = amountMeasured;
		break;

<<EDIT

as the min/max and sensitivty is also calculated in the calibration phase of the sensor

case MagneticMonitorState::calibrating:
		totalExtrusionCommanded += amountCommanded;
		totalMovementMeasured += amountMeasured;
		if (totalExtrusionCommanded >= 10.0)
		{
			backwards = (totalMovementMeasured < 0.0);
			if (backwards)
			{
				totalMovementMeasured = -totalMovementMeasured;
			}
			float ratio = totalMovementMeasured/totalExtrusionCommanded;
			minMovementRatio = maxMovementRatio = ratio;

			if (comparisonEnabled)
			{
				ratio *= mmPerRev;
				if (ratio < minMovementAllowed)
				{
					ret = FilamentSensorStatus::tooLittleMovement;
				}
				else if (ratio > maxMovementAllowed)
				{
					ret = FilamentSensorStatus::tooMuchMovement;
				}
			}
			magneticMonitorState = MagneticMonitorState::comparing;
		}
		break;

[invertmast]

@timschneider said in More problems:

@invertmast
I had similiar problems with different versions of the MFM.
Double check the bearings, we had two broken bearings of the sense wheel rod - they were not running smooth - which causes the sense wheel to get broken/worn out. Due to the fact, that you already checked and changed the housing, I think it is not related to the housing.
Double check your wiring/crimping and your firmware. We had the same problems with older firmware, 3.4.6 is working.

But anyhow this is not the reason for the ridiculously large min/max values and the measured sensitivity.

I checked the code and the measured sensitiviy is calulated as follows:

float RotatingMagnetFilamentMonitor::MeasuredSensitivity() const noexcept
{
	return totalExtrusionCommanded/totalMovementMeasured;
}

the reset code is doing the following

void RotatingMagnetFilamentMonitor::Reset() noexcept
{
	extrusionCommandedThisSegment = extrusionCommandedSinceLastSync = movementMeasuredThisSegment = movementMeasuredSinceLastSync = 0.0;
	magneticMonitorState = MagneticMonitorState::idle;
	haveStartBitData = false;
	synced = false;							// force a resync
}

so maybe the reset should also reset the following variables @dc42

totalMovementMeasured
totalExtrusionCommanded

as the min/max and sensitivty is also calculated in the calibration phase of the sensor

case MagneticMonitorState::calibrating:
		totalExtrusionCommanded += amountCommanded;
		totalMovementMeasured += amountMeasured;
		if (totalExtrusionCommanded >= 10.0)
		{
			backwards = (totalMovementMeasured < 0.0);
			if (backwards)
			{
				totalMovementMeasured = -totalMovementMeasured;
			}
			float ratio = totalMovementMeasured/totalExtrusionCommanded;
			minMovementRatio = maxMovementRatio = ratio;

			if (comparisonEnabled)
			{
				ratio *= mmPerRev;
				if (ratio < minMovementAllowed)
				{
					ret = FilamentSensorStatus::tooLittleMovement;
				}
				else if (ratio > maxMovementAllowed)
				{
					ret = FilamentSensorStatus::tooMuchMovement;
				}
			}
			magneticMonitorState = MagneticMonitorState::comparing;
		}
		break;

I am currently running firmware 3.4.6

as for wiring, i have run it through an ethernet adapter and the only other wiring inside that ethernet cable being the wire for a precision piezo sensor. I have also run the MFM wiring completely separate from the drag chain both with and without shielded cables and the reliability is consistently, inconsistent.

[invertmast]

More data.
I started a new print at 7:30pm last night that is still continuing (its a 28hr print). Here are the values from the first 18hrs

9/19/2023, 7:29:56 PM 	M32 "0:/gcodes/RWA.gcode"
File 0:/gcodes/RWA.gcode selected for printing

9/19/2023, 7:37:57 PM 	m591 d0
Duet3D rotating magnet filament monitor v3 on pin e0stop, enabled, sensitivity 28.00mm/rev, allow 10% to 150%, check printing moves every 5.0mm, version 3, mag 128 agc 77, measured sensitivity 27.94mm/rev, min 81% max 109% over 3498.6mm

9/19/2023, 7:48:02 PM 	m591 d0
Duet3D rotating magnet filament monitor v3 on pin e0stop, enabled, sensitivity 28.00mm/rev, allow 10% to 150%, check printing moves every 5.0mm, version 3, mag 132 agc 75, measured sensitivity 28.85mm/rev, min 75% max 113% over 9028.8mm

9/19/2023, 7:50:39 PM 	m591 d0
Duet3D rotating magnet filament monitor v3 on pin e0stop, enabled, sensitivity 28.00mm/rev, allow 10% to 150%, check printing moves every 5.0mm, version 3, mag 132 agc 75, measured sensitivity 29.15mm/rev, min 68% max 114% over 10681.2mm

9/19/2023, 8:58:16 PM 	SensorError- sensor : 0 Continuing to Print

9/19/2023, 8:58:39 PM 	Filament error on sensor 0 - Paused
Filament error on extruder 0: tooLittleMovement
Resume state saved

9/19/2023, 8:58:46 PM 	Printing paused at X519.1 Y49.1 Z24.0
Duet3D rotating magnet filament monitor v3 on pin e0stop, enabled, sensitivity 28.00mm/rev, allow 10% to 150%, check printing moves every 5.0mm, version 3, mag 130 agc 78, measured sensitivity 28.83mm/rev, min 10% max 114% over 55887.2mm

During this pause, the print was visibly fine and showed no indications of severe under or over extrusion.

9/19/2023, 9:13:00 PM 	m591 d0
Duet3D rotating magnet filament monitor v3 on pin e0stop, enabled, sensitivity 28.00mm/rev, allow 10% to 150%, check printing moves every 5.0mm, version 3, mag 132 agc 74, measured sensitivity 28.50mm/rev, min 89% max 105% over 233.7mm

At this point i didn't feel like baby-sitting the printer, so i disabled the MFM using M591 D0 S0

9/19/2023, 9:13:13 PM 	m591 d0
Duet3D rotating magnet filament monitor v3 on pin e0stop, disabled, sensitivity 28.00mm/rev, allow 10% to 150%, check printing moves every 5.0mm, version 3, mag 132 agc 74, measured sensitivity 28.30mm/rev, min 88% max 105% over 357.7mm

Here the ridiculously large min/max values begin to show up. I have seen as high as four digits multiple times.

9/19/2023, 10:37:49 PM 	m591 d0
Duet3D rotating magnet filament monitor v3 on pin e0stop, disabled, sensitivity 28.00mm/rev, allow 10% to 150%, check printing moves every 5.0mm, version 3, mag 131 agc 74, measured sensitivity 27.72mm/rev, min 80% max 221% over 46661.6mm

9/20/2023, 9:26:11 AM 	m591 d0
Duet3D rotating magnet filament monitor v3 on pin e0stop, disabled, sensitivity 28.00mm/rev, allow 10% to 150%, check printing moves every 5.0mm, version 3, mag 132 agc 74, measured sensitivity 28.80mm/rev, min 0% max 259% over 29797.2mm

9/20/2023, 10:55:00 AM 	m591 d0
Duet3D rotating magnet filament monitor v3 on pin e0stop, disabled, sensitivity 28.00mm/rev, allow 10% to 150%, check printing moves every 5.0mm, version 3, mag 131 agc 76, measured sensitivity 28.88mm/rev, min 0% max 260% over 83336.8mm

9/20/2023, 1:22:27 PM 	m591 d0
Duet3D rotating magnet filament monitor v3 on pin e0stop, disabled, sensitivity 28.00mm/rev, allow 10% to 150%, check printing moves every 5.0mm, version 3, mag 131 agc 74, measured sensitivity 28.87mm/rev, min 0% max 260% over 171294.5mm

I use 3mm of retraction during a 3mm wiping movement, only when changing layers with a 32mm/sec retraction speed.

[timschneider]

@invertmast
that sounds all good, did you checked the crimping? I had it once that the KK254 crimp was not making a good connection. Maybe you can provide fotos of the crimping to the filament sensor and to the duet mainboard.

It sounds to me like ESD or bad connection in relation to another software problem with invalid data.

The protocol of the filament sensor does not have any checksum as far as I see it in the firmware

'>> EDIT
but has a parity check -> and it is printed in M122 output!
<<

// Version 3 firmware:
//  Data word:			P00S 10pp pppppppp		S = switch open, ppppppppppp = 10-bit filament position
//  Error word:			P010 0000 0000eeee		eeee = error code
//	Version word:		P110 0000 vvvvvvvv		vvvvvvvv = sensor/firmware version, at least 2
//  Magnitude word		P110 0010 mmmmmmmm		mmmmmmmm = highest 8 bits of magnitude (cf. brightness of laser sensor)
//  AGC word			P110 0011 aaaaaaaa		aaaaaaaa = AGC setting (cf. shutter of laser sensor)

and due to the amount of 'sensor error 0 - no data' I guess it is a bad connection or ESD problem.

[invertmast]

@timschneider said in More problems:

@invertmast
that sounds all good, did you checked the crimping? I had it once that the KK254 crimp was not making a good connection. Maybe you can provide fotos of the crimping to the filament sensor and to the duet mainboard.

It sounds to me like ESD or bad connection in relation to another software problem with invalid data.

The protocol of the filament sensor does not have any checksum as far as I see it in the firmware

// Version 3 firmware:
//  Data word:			P00S 10pp pppppppp		S = switch open, ppppppppppp = 10-bit filament position
//  Error word:			P010 0000 0000eeee		eeee = error code
//	Version word:		P110 0000 vvvvvvvv		vvvvvvvv = sensor/firmware version, at least 2
//  Magnitude word		P110 0010 mmmmmmmm		mmmmmmmm = highest 8 bits of magnitude (cf. brightness of laser sensor)
//  AGC word			P110 0011 aaaaaaaa		aaaaaaaa = AGC setting (cf. shutter of laser sensor)

and due to the amount of 'sensor error 0 - no data' I guess it is a bad connection or ESD problem.

I'll post a photo of the MFM connector once this print completes. the opposite ends are crimped into furrel's before being tightened into the pcb clamp blocks on the ethernet breakout board.

[timschneider]

@invertmast
OK, i double checked my previous posts about the protocol and checksum and so on.

the variables are reset via the state machine state idle and the protocol does provide a parity check. Based on your M122 output there are alot of error frames and parity errors from your filament sensor.

=== Filament sensors ===
Extruder 0: pos 146.95, errs: frame 311476 parity 877 ovrun 0 pol 3 ovdue 0

it should be more like

=== Filament sensors ===
Extruder 0: pos 107.23, errs: frame 0 parity 0 ovrun 0 pol 0 ovdue 0

so I still think it is an ESD or bad connection problem.

Hope this will help you.

[invertmast]

@timschneider said in More problems:

@invertmast
OK, i double checked my previous posts about the protocol and checksum and so on.

the variables are reset via the state machine state idle and the protocol does provide a parity check. Based on your M122 output there are alot of error frames and parity errors from your filament sensor.

=== Filament sensors ===
Extruder 0: pos 146.95, errs: frame 311476 parity 877 ovrun 0 pol 3 ovdue 0

it should be more like

=== Filament sensors ===
Extruder 0: pos 107.23, errs: frame 0 parity 0 ovrun 0 pol 0 ovdue 0

so I still think it is an ESD or bad connection problem.

Hope this will help you.

That M122 was with a different sensor. the one that was originally in the housing designed by a member here..

Here is the M122 with the sensor currently mounted on this printer and the one giving the current problems (the one with the housing supplied by Duet).

other than the sensor, everything else is identical on this printer and all posts since the Sept. 4th are of this sensor.

m122
=== Diagnostics ===
RepRapFirmware for Duet 2 WiFi/Ethernet version 3.4.6 (2023-07-21 14:08:28) running on Duet WiFi 1.02 or later + DueX5
Board ID: 08DGM-956GU-DJ3SJ-6J9DD-3SD6S-9UPZH
Used output buffers: 9 of 26 (26 max)
=== RTOS ===
Static ram: 23896
Dynamic ram: 76636 of which 12 recycled
Never used RAM 7960, free system stack 106 words
Tasks: NETWORK(ready,15.9%,211) HEAT(notifyWait,0.1%,333) Move(notifyWait,1.2%,268) DUEX(notifyWait,0.0%,24) MAIN(running,82.7%,421) IDLE(ready,0.1%,30), total 100.0%
Owned mutexes:
=== Platform ===
Last reset 00:20:27 ago, cause: power up
Last software reset at 2023-09-17 10:38, reason: User, GCodes spinning, available RAM 11600, slot 0
Software reset code 0x0003 HFSR 0x00000000 CFSR 0x00000000 ICSR 0x0041f000 BFAR 0xe000ed38 SP 0x00000000 Task MAIN Freestk 0 n/a
Error status: 0x1c
Aux0 errors 0,1,0
Step timer max interval 0
MCU temperature: min 21.2, current 28.5, max 29.0
Supply voltage: min 23.6, current 24.1, max 24.8, under voltage events: 0, over voltage events: 0, power good: yes
Heap OK, handles allocated/used 99/1, heap memory allocated/used/recyclable 2048/24/12, gc cycles 0
Events: 0 queued, 0 completed
Driver 0: ok, SG min 0
Driver 1: standstill, SG min n/a
Driver 2: ok, SG min 0
Driver 3: stalled, SG min 0
Driver 4: standstill, SG min n/a
Driver 5: ok, SG min 0
Driver 6: ok, SG min 0
Driver 7: ok, SG min 0
Driver 8: ok, SG min n/a
Driver 9: standstill, SG min n/a
Driver 10: 
Driver 11: 
Date/time: 2023-09-22 09:51:13
Cache data hit count 4294967295
Slowest loop: 220.62ms; fastest: 0.17ms
I2C nak errors 0, send timeouts 0, receive timeouts 0, finishTimeouts 0, resets 0
=== Storage ===
Free file entries: 9
SD card 0 detected, interface speed: 20.0MBytes/sec
SD card longest read time 1.2ms, write time 383.9ms, max retries 0
=== Move ===
DMs created 83, segments created 30, maxWait 357293ms, bed compensation in use: mesh, comp offset 0.000
=== MainDDARing ===
Scheduled moves 4219, completed 4206, hiccups 0, stepErrors 0, LaErrors 0, Underruns [0, 0, 0], CDDA state 3
=== AuxDDARing ===
Scheduled moves 0, completed 0, hiccups 0, stepErrors 0, LaErrors 0, Underruns [0, 0, 0], CDDA state -1
=== Heat ===
Bed heaters 0 -1 -1 -1, chamber heaters -1 -1 -1 -1, ordering errs 0
Heater 0 is on, I-accum = 0.0
Heater 1 is on, I-accum = 0.7
=== GCodes ===
Segments left: 1
Movement lock held by null
HTTP is idle in state(s) 0
Telnet is idle in state(s) 0
File is doing "G1 X233.050 Y245.301 E2.07967" 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
=== Filament sensors ===
Extruder 0: pos 250.66, errs: frame 0 parity 0 ovrun 0 pol 0 ovdue 0
=== DueX ===
Read count 1, 0.05 reads/min
=== Network ===
Slowest loop: 387.30ms; fastest: 0.00ms
Responder states: HTTP(0) HTTP(0) HTTP(0) HTTP(0) FTP(0) Telnet(0)
HTTP sessions: 1 of 8
= WiFi =
Interface state: active
Module is connected to access point 
Failed messages: pending 0, notready 0, noresp 0
WiFi firmware version 1.27
WiFi MAC address 5c:cf:7f:76:63:7a
WiFi Vcc 3.40, reset reason Turned on by main processor
WiFi flash size 4194304, free heap 25760
WiFi IP address 192.168.4.29
WiFi signal strength -47dBm, mode 802.11n, reconnections 0, sleep mode modem
Clock register 00002002
Socket states: 0 0 0 0 0 0 0 0

[timschneider]

@invertmast
ok, i understand. Do you also have an M122 output when the filament sensor is producting wrong values?

And have you been able to get some pictures of the connections? And you are routing the signals through an ethernet cable, so some sort of twisted pair cable, which signal is running in a pair? Is the Data-Line running next to the GND of the Filament Sensor in a twisted pair? If not, that can be the problem.

Tim