That looks like a solid machine. Nice work.

Great - thank you!

@adrian52 good to know!

@rbtdata I'm not familiar with the CR10 but I've had a look at your config.g and your Z homing files and there seem to be some inconsistencies. Can you let us know where the end stops are physically connected. The most usual arrangement is to have them at the low end of all axes but it's not obligatory. Oh, and do you move the gantry up and down in Z, or the bed?

So the most common arrangement would be the X switch located on the left of the X axis, the Y switch located at the front, and the Z switch located at the top of the bed travel or at the bottom of the gantry if the bed is static in Z.

Please can you connect a PC running YAT or Pronterface etc. to the Duet via USB. When you lose the connection, run these two commands from the PC:

M552
M122

The first should tell you whether you are connected or not and what the IP address is. The second will produce a diagnostic report.

Most routers can be instructed to always allocate the same IP address to a particular device when it connects.

@kulitorum said in 8x8x6 METER concrete printer:

Thanks for the nice words 🙂

Custom slicer?

No. I wrote a plugin for Simplify3d that is run after the slicing (replace the gpx.exe and export as a Makerbot file) that adds the rotation gcode. It also performs other small changes to the gcode, but nothing crazy.

Nozzle: We normally use a nozzle with flaps, but we broke three during the print, supposedly because of small rocks in the mixture. It's not easy to get recycled materials that are clean and free from oversized rocks.

We do not have any noticeable z-wobble 🙂

some nice work there!!! is there any way you can share the plugin you made so that others can use it? I'm currently working on a project that i need to be able to make the G code to turn the head on my printer. just like your U axes. if you can share it or help make a plug in that would be amazing. you can see here what i'm trying to do. Thank you! ~Russ

Hello everyone! its been a bit scene i have been on here, for those who have not seen it, i created a flat coil winder using the duet controlled delta i built,
here is a few videos of it working:

https://www.youtube.com/watch?v=KP2G4fE0ssI
https://www.youtube.com/watch?v=yj8OHuxBzAg

it even made it to hackaday, that was cool,
https://hackaday.com/2018/06/16/delta-printer-morphs-into-cnc-flat-coil-winder/

any hoo, it would not be possible with out the Duet! i "sell" theses to everyone i talk to others about how much i love it and that the community here is one vital roll in its success! 🙂

Just thought i would post this here as i haven't posted in a while, thanks again to all those who contributed to this platform.

I do have a request though. in order for this to work correctly, i need to find a way to make a stepper motor turn the cam follower head in the direction that I'm trying to lay the wire, This way i can control precisely where i lay the wire and i dont have to rely on the wire to " pull" the cam around. right now there is an offset between the roller and the zero point of the Gcode / indefector.

Dose anyone know if there is a way i can use the extruder motor out put ( or an extra output to a driver) that i can automatically tell it to move in accordance to the direction that the endefector is moving?

The alternative is to offset the Gcode so that the cam follower is in the correct place. if i wanted to place the wire exactly, or make sharp corners i can have to offset this. very hard thing to do.

I thought about trying a drag knife type Gcode editor for corners. but that's not a good option. because the radius of arcs or any moment really is going to be off set.

so the best thing is to have a motor that can move the head around to make sure it fallows the current direction on the fly. then i can make the roller in the zero location and have no offset. right now there has to be an offset or the wire / roller will not work correctly.

If there is any possible way to do this with current duet functionality or G code script... please let me know,

if there is not please let me know if you'd be interested in making a script or some type of program / addition to the duet that can do this.

to be clear, I want to drive a stepper motor that would be turning the cam follower (360 deg) so it always was trailing the direction of travel. and for this to be done internally on the fly or from a gcode script that would add the extra g code to do this, using the already created G code for the wire placement.

This would also be helpful for a drag knife type tool...

here is just a photo of some # 40 AWG wire with a gap, this is a bifilar coil...
alt text

oh and i guess i did not update this thread with the addition of the 9 arms on the delta... i did this for more support on the CNC milling attachment i made.
https://www.youtube.com/watch?v=i_aMtAWiK64

Thanks for any input and help / feed back. positive criticism is welcome 😉

god bless!

~Russ Gries

Thank you! I will give the M564 a try and post the results. We are building an entire new gantry system for the z-axis so at the moment I don't have much room there and dont need it since we are just looking to start moving and printing in the parameters that we do have.

How long are the wires from the piezo disk to the piezo PCB? I can't see where you have the board mounted.

You also need to include a delay into the probe routine ( include R0.5 in your M558). This makes the printer wait for half a second between XY movements and Z probe movments to allow vibration to die down. Also, you should probably use the P8 mode rather than the P1, the output of the piezo PCB is digital, using P1 (analogue) only increases the chances of false triggers.

Idris

0_1536296723135_BedMap.png
Okay, that looks a lot better. (In that it's at least mostly a plane, and doesn't look like I'm trying to print on wet corrugated cardboard, not that this is a great result!) I have a little compliance in the front right of the bed when probing, so that corner shows a little lower than it should, the rest pretty much is a sloped plain, slightly lower to the front. I had plans to figure out how I was going to make adjustments, it seems that it's time to put those into action. The map looks terrible in that scale though.

https://www.youtube.com/watch?v=s8WD4v3DnZ8
You can't really see the compliance in the first couple of probes (Weird, I'd have thought that any would be on the other side, since that is further from the sensors there.) Apparently the autofocus hadn't quite figured it out yet.

tghere. This video the axes should look straighter, since I know that I had leveled the screws at this point.

@danal I should have thought of the straight Z move, thanks for mentioning it.

As for the belt tensions, plucking them is kind of difficult since the only sit about 1 mm from the tower extrusions. I guess I keep using my gut feeling for now 🙂

Looking at it, I see it is relay controlled for the 3 outputs, which is good (having Active Low trigger pins, and use the Signal and Ground through each relay - signal should be pulled high).

If you were to connect them to pins like endstops (that you are not using, or endstops on the expansion header), which can be remapped and cause triggers (see https://duet3d.dozuki.com/Wiki/Gcode#Section_M581_Configure_external_trigger), you can write custom macros that are run when each of the outputs on the controller is triggered (for example the UP can contain something like "G1 Z+0.5 F500" - the + indicating a relative movement)

You will need to create some custom macros for this, and possible some wiring, but I can't see why it can't be done.

If going through, just have a safe way to test it thoroughly before using it in production.