@fcwilt @Phaedrux Thanks for the clarification guys. I got filaments!

I haven't seen any information on resellers/forum posts about the duet magnetic filament monitor. Although I did see that someone was attempting to make a DIY which I must confess, I have considered doing the same.

Preferably I would rather purchase two, Is there any ETA as to when they will be restocked?

@MikeS said in Jerk Control M566:

Seeing that it is a professional commercial printer i won't say that requirements are not met and also you should really come in contact with the manufacturer to, at least, get the basic configuration they use for this machine.

Well I got a hold of Aon finally, apparently they're updating their calling system. Anyways, the support team said that the M1 model is mostly a prototype for proof of concept. There are issues with the model, and there are success stories with it as well. They lined me up to talk to the machine's designer so I can get some answers on its anatomy. The support agent does not know a whole lot about their legacy machine, but she does know that the set screws used to tension the toolhead to the belt wiggle loose over time and that was one of the design updates they did going into the M2 model. That said I'm going to tighten screws where I can and see if they help control it from shifting. But based on the nature of the shifts it doesn't stand out as being mechanical slipping as much as it could be configuration.

We'll see. I am just happy to have talked to an Aon team member.

@jrockland said in CAN connectivity: Duet 3 MB6HC to EXP3HC:

@kroybal hmm but why 15 ? If you have just a 6hc+3hc shouldnt it be address to 1 ? Or im missing something here

Addressing is arbitrary right? I certainly do not have tons of boards and channel 1 is free but I found it easiest to just flip them all to on in one motion instead of trying to be precise with flipping one switch.

Edit: Not totally arbitrary, but no right or wrong answer as long as its logical

@fcwilt

I have updated the firmware for the MB and TB's to the recent release about a week ago, that said I can rewire somethings and see what results it'll produce. I am still waiting to hear back from the machine's designer to ID the motors so that I can specify current ratings in the config.

UPDATE:

@jay_s_uk & @Phaedrux

I got the switches running. I will probably just recognize only one of the redundant switches, since they seem to be coplanar and serve no obvious purpose. I am working with some juiced up motors for the z-axis and the only reason I can think of for redundant switches in to be safe not to damage the machine in the event of a signal failure.

I could post a photo if you are interested however, doesn't seem to be necessary at this point!

Thanks for your help.

The support team over at AON have been really delaying getting back to me. However, my boss went ahead and ordered a duet EX3HC. The results were excellent right out of the gate. All of the layer shifted existed on the x-axis which at the time was powered by low current channels . At any rate, I have new issues to uncover and fix but for now I will call this a victory. I will start a new thread in regards to complications I face with the expansion board.

Thanks for everyones help and suggestions, ultimately it led to discovering a trivial mistake.

This issue was resolved for those who experience a similar issue... I had my hotend heater mapped to a toolboard using pt100 sensors on the mainboard. Some rewiring and swapping pins around was in play.

@dc42 I do not believe I was ever put into contact with filastruder, I suppose I was awaiting a response.

At any rate, I am back simply due to the same reasons stated above. We have made do with the bug (I am actively waiting for the sync LED as we speak) but I was curious of the latest Firmware updates, I believe I checked your account and checked the latest post that I could find in regards to firmware updates was your post from January 5th, 2021.

I am currently working with RepRapFirmware for Duet 3 MB6HC 3.2.2 (2021-02-11), I will have to uncover the EXP3HC firmware once its sync'd, however likely not necessary, it is still the same (if stated above.)

Anyways, I could attempt another firmware upgrade before going through the process of an exchange.

I have been having issues with the IR filament monitor. For my printer's setup, the sensor is enclosed in an SLA printed opaque part with silicone gasketing to prevent light leaks. However, my sensor will flicker a persistent green even when there is no motion. I have had to disable FM for the past month due to the boards inconsistencies. This has persisted even after cleaning the sensor with air, and a gentle dusting with a PEC Pad ensuring the sensor is clear of dust/debris.

How does the board handle its signal output? Is it some square wave PWM signal that's producing some (I say this arbitrarily) 50% DC as its high/motion detected state and 25% low/no motion? I am trying to read into the led flickering and make sense of what is occurring behind the signal its providing to the board.

My DWC reports back over extrusion print paused and in other cases, I have experienced under extrusion where the behavior of the LED color indications: R R R R .... G
during phases of constant filament feeds.

There are parameters I can dial in such as reference length which I would imagine takes some delta of the signal output and converts signal into a length of motion required to produce the trace. I just don't see this helping my case, because I believe it is at a hardware level and not a software level.

I am digging deep into the PCB circuitry logic at this point, but I have done so because I feel like I have exhausted many of my fixes.

I haven't seen any information on resellers/forum posts about the duet magnetic filament monitor. Although I did see that someone was attempting to make a DIY which I must confess, I have considered doing the same.

Preferably I would rather purchase two, Is there any ETA as to when they will be restocked?

@dc42 I will get in touch with my boss and owner of the machine. I believe he got it from filastruder.

@dc42
IMG_2245-2.mp4

I verified the build time. Following the firmware update the reset worked my first go at it, the second go at it took about 10 seconds before the LED powered on.

The attached video is capturing the third and fourth attempt at resetting the board. I had to reduce quality and cut the video short but the fourth attempt was about 50 second connection, and I tried once more after that and it was immediate.

If firmware updates have an effect on the behavior of the LED/connection, could that be suggesting that the board has the potential to work? I have have seen an improvement, we started at the range of 10-30 minutes to connect and now we're down to the range of immediately to 50 seconds tops.

@dc42 Sure thing, I will be leaving the lab today in 15 minutes so I will likely get back to you by tomorrow. Hope that is not too much of an inconvenience.

@dc42 said in CAN connectivity: Duet 3 MB6HC to EXP3HC:

Thanks. I'm sorry to hear that it is still taking a long time for the 3HC to connect. Does the LED on the 3HC start blinking rapidly as soon as it is powered up, but then take up to 45 sec before it blinks slowly to indicate CAN sync? Or does the LED remain off for up to 45 sec from power on; but having started blinking rapidly, it then establishes sync within a couple of seconds? Or something else?

The light is not on for the 45 sec duration, then flickers for about 3 seconds before syncing up with the MB.

@dc42 said in CAN connectivity: Duet 3 MB6HC to EXP3HC:

I can authorise a warranty exchange of the 3HC if you wish. Unfortunately it will take some time for your board to reach me here in UK, so this won't help me to diagnose the cause in the short term.

Sure thing, do you think this issue is unique to my board or is this issue common at this time? If it is not necessary, we could hold off on exchanging the board. If the problem does persist and/or is unique to my board, then we may have to go that route . So we can eliminate the possibility of this board slipping through a crack in QA and being unfixable for my purposes.

@dc42
I updated with the new binaries and confirmed the firmware date with an M115 command on both. They both reported back 2021-02-01.

Upon restarting the boards (via toggling the power switch) the 3HC was connected in under 10 seconds. I am a fan of repetition so I tried again and now its connection time is in the bracket of 30-45s following power-up.

Certainly an improvement, however, might I suggest a message to the console stating an established connection.

Another point I would like to note is that once the board is connected my endstops are not active until I press "STOP" on my pannel Due or emergency stop via the DWC and wait for a connection. Using a software reset does not cause the 3HC to lose connection.

@dc42 I was absent from work Friday due to family reasons and do not normally work on weekends. I'll update the boards and report back to you.

@dc42 said in CAN connectivity: Duet 3 MB6HC to EXP3HC:

3. What board revision is your 3HC?

For record, it is a V1.0 board

@dc42 said in CAN connectivity: Duet 3 MB6HC to EXP3HC:

Which country are you in?

Central U.S.

One difference I have noticed is that my EXP3HC board flashes without sync now and does not connect to the mainboard whatsoever even after waiting over five minutes at this point.