Hi Ian, okay thanks.
Yes the gantry moves away from the object when I press pause.
Only after printing has finished does the nozzle remain on the object and only if I have paused printing. If I don't use the pause, the nozzle moves to the back right corner at the top at the end of printing

It's now a moot point. The replacement fuse didn't resolve. The heater is dead in the water. I am not sure I want to put any more money into my printer.

@dc42 used a faster sd card, turned mesh off. works. Thanks.
Before
微信截图_20240322220739.png
After
微信截图_20240322220749.png

Follow-up, this is basically what I ended up doing. I realize this may not be a good idea in practice, but it does seem to work. I rebuilt the firmware so that in the event of excessive backlash, a warning is issued, and a static value is assigned. Each 1HCL has it's own value it sets.

@curieos I'm glad you appear to have found the cause! Ground loops can cause various odd behaviour, just like ESD can.

I'll mark this thread as solved but feel free to revert it if the problem recurs.

Can you test the BLTouch directly connected to the Duet? Reconfiguring the servo pin, etc.

@marioys97 set the error trigger level a bit higher to start with as well (E value in M569.1)

@dc42

Awesome I missed that capability!

@T3P3Tony Thanks, I got this working. No new board!!!

@Mr-Crispin I couldn’t find anything on there. Do you happened to know their username?

@massynrt the connection will be the same as for connecting an NPN-output Z probe. See https://docs.duet3d.com/en/User_manual/Connecting_hardware/Z_probe_connecting#npn-output-normally-open-inductive-or-capacitive-sensor.

This has been implemented in firmware 3.5.

I would probably treat them as two different heaters.

Create a macro to define Zone 1 as you would any heated bed.
i.e. in M950 choose your output and sensor for that section.

Then have a macro that frees the pin and sensor used for zone one and redefines the entire bed (Zone 2) using two outputs and the sensor mounted to zone two.
You could define the sensor used on zone one and have max temps etc as well for added protection.

I think that should allow PID tuning as per normal for each zone, but of course zone 1 is going to "bleed" heat into zone 2, so overall accuracy will be reduced I guess.

I'm sure it's been done many times, so someone may have more info based on actual experience.

@droftarts Thank you both!
I ended up remodeling the Printables Parts as I also needed a different cable chain mount and it was easier to remodel than the other one. Now I'm going to figure out the specialities of the toolboard...

@gloomyandy didn't see 😞
I m going to order a couple of RJ11.

Thanks

@Richard-F Also, you have your drivers set to StealthChop with M569 D3. But they do change over to spreadCycle (which is noisier), as you have set a V parameter. Send M569 P0.0 to check what speed this is happening at, as it may be you're in spreadCycle most of the time. While this is recommended, as you're less likely to lose steps, it will be noisier.

Ian

@T3P3Tony Thanks! I'll look into it. I was able to get my issue resolved.

Once I got the connectors working correctly and changed my script, it works, although the script itself is clunky, so I'll look at what the new firmware allows to simplify it. I added backshells to the PH connectors to protect the pin crimps. I'll look into uploading the backshells to Thingiverse or something in case they're useful to someone else. I find bare PH connectors fragile.

I mainly use the script when the bed is too far off level to use G32, which usually happens if there's a problem with one of the stepper connectors.

@MaxGyver yes I think so, on the basis that the hot end is PTC so the power draw will drop to 80W or lower after a short while. You will need to ensure that the crimp connections that you make to the Microfit connector are good, and I suggest you check for signs of the tool board overheating from time to time.

@zBeeble said in Clarifying BigTree Filament Sensor Connection.:

@stuartofmt This, based on the filament position w.r.t. the header, agrees with what I have been referencing.

If I had V and GND swapped, would that kill the BigTree? What do you guys who understand the circuit diagram expect?

I did also try the e1stop --- no change there.

15 seconds into the video. Maybe.

@yetanotherusername
i just stripped them out, used five pairs of them with the foil shield grounded. A dedicated pair with shield is used on cs pin, another on int pin. others for the rest pins.