Topics created by oliverracing

It's fine. Hopefully someone here has what you're after.

@dc42 Thanks - that's perfect, I'll have a play and see where I am!

@baird1fa Ok thanks that'd good info, Yeah the large surface area will probably be a factor but will be insulating it in a similar way to the E3D version so hopefully that will reduce that issue. Yeah, that Typhoon is crazy!

@bondus yeah, 90% of what I print gets smothered in plastic filler and painted or is a no visible part for my kit car so that final bit of precision really isn't high priority for me.

Thinking about it I can't think of any parts I've printed that are "show" parts.

Plan is today is to do a test on a single wall cube to see if I can push the acceleration as high as possible (already know the max flow rate and therefore speed of my extruder) Will test near and far from the pivot as not 100% sure if the beam inertia will play a bigger part than the "wobble" from the flex at far reaches

In reality, M669 kinematics types 0 = Cartesian, 1 = CoreXY, 2 = CoreXZ, 5 = CoreXYU, 8 = CoreXYUV and 11 = Mark Forged are all the same except for the default axis-to-motor matrix.

Ok, that should be fine although being able to do in the fireware would be great too, I'm just trying to take everything into account when doing the mechanical design so will add in adjustability to the offset.

Thanks for the advice - chucked a esp8266 on order too.
That all in one Dev board is tempting but I really will need 2 screens (minimum) and where I want to put them is only just tall enough for the 0.91 OLED so I'll mount them separately.

My plan is to use hard buttons not touchscreen. So far the buttons i'm planning on are...
(1)-Wifi Mode (toggle) - swap between WiFi access point mode and connecting to a network.
(2)-Home all.
(3)-Pause/restart (toggle).
(4)-Emergency stop.

Some of these could go directly on the duet or on the connected Arduino, not yet sure how I'll do each but shouldn't be too tricky to work out

At the moment I feel everything else should be doable via DWC and I'll have the IP address and the Wifi mode as one of the displayed bit of info so I know how to connect.

I was thinking about an external SD card reader and a "print latest file" button but no idea how I'd implement this at the moment so can always add that later.

@dc42 Thanks for the info, I'll give them a shout, they're super local to me (often drive past the door) so may even be able to grab a few to avoid postage 😂

@jay_s_uk Yeah, I'd come across those, and will be using something very similar for the X/Y/Z motors, I found a Chinese source for something supposedly similar that should be adequate (although lower step/deg), if not these should almost be a direct swap. (and designing the frame to take these anyway)

@Nightreaver Cool.

You can contact me anytime for MQTT-related discussions.

I spent 4 years doing commercial MQTT implementations on tiny microcontrollers and have tens of thousands devices in the field talking all day long.

So for anyone reading this - please if you are using a Tevo Tarantula (or an extruder from one), check the bowden tube isn't pulling back into the extruder gear on retractions!

Yep, almost 100% sure this is the issue that started this whole mess! Then swapping in a stepper motor with different wiring at the plug caused me to blow the driver! Ahhh. Lesson learned (£170 lesson sadly - new TMC2660 chips and eventually a new board). On my setup it's impossible to see into the drive gear so I couldn't tell this was happening and when extruding the mangled bowden tube then pushed back to where it was meant to be but almost completely closed stopping it extruding properly! No idea how I got away with it working for a few years as it seems a flawed design!

I do recall a somewhat recent thread with a similar request for cutting, maybe go searching and see what happened there

hmm, seems its been quiet over there > https://forum.duet3d.com/topic/10767/triggering-a-macro-by-g-command

Have you got "lift head" checked?
If not it will just reduce the speed to the minimum set value.
This may still be less than the minimum layer time you have set.
0_1552300843036_lift_head.jpg

The resulting G code looks like this if the limits are reached

;Small layer, adding delay G0 X69.27 Y91.783 Z3.7 G0 X89.258 Y92.474 G4 P2431

It is (was?) common to use solenoids with pwm to control the bypass air in some fuel injected engines and I control the bypass air for my supercharger with one. You would need to do some voltage shifting but a simple mosfet circuit would do. Google "pwm boost control solenoid"