Hi all, we are excited to finally show off the near final design of our machine. It is powered by a Duet3 and a toolboard mounted to the extruder. A video of it running at 400mm/s in all axes is posted below at our Instagram.
We have so much to learn about the Duet framework as our past experience has always been with Marlin, but we are ramping up fast..!
https://www.instagram.com/p/B-klDdcD_ld/?igshid=96tmsc5zuvkp
So.. the idea of running macros from the local SD card is compelling - it's not ideal, but it would be very workable. I took a clean SD card and put a few sample macros into a folder named "macros" off the root. It works! They all show up like expected and run! I'm pleased.. it's not perfect, but that's a big step forward.
Still working on this, but here is my v1 mock-up..!
@Phaedrux - Yes, the XY belt layout is to both get around the smooth rods and Z-belt as well as for tensioning - it works great!
The version in the video is using a single Igus 12mm bushing on each smooth rod. An updated version should be ready in the next few days that uses two bushings each.. we'll see if it is necessary or not.
Here are some photos of the z-belt connections. The piece that fits against the teeth is ribbed to properly seat itself into the belt and the holes are over-sized to allow it to properly fit in the front (more on that in a second).
rear connection:
front connection:
The rear is where the ends of the belt come together. After it is tightened (with the front connection removed), proper belt tension is applied. Then, the XY mechanism (still working on a good name) is leveled. Once leveled, the front connections are tightened onto the belt. The belt is now locked in place and the XY mechanism has no ability to lose alignment.
Yes, the bed itself is adjustable for fine tuning.
Thoughts?
Can someone 'explain it like I'm 5' on why I'd use an RPI with a Duet3 other than for Wifi? If it can run without it, what else am I missing? Thanks in advance..
@jpomo10 thanks! The relays only short the windings when power is removed.. with the proper belt tension, it holds its position.
I created a macro on the Duet SD card containing the single command: "M98 Ptest.gcode". Then, from the GUI running on my RPi, I created a macro named test.gcode that played a tune. Running the macro from the PanelDue successfully called the macro on the RPi! To verify, I modified the macro on the RPi and ran again - it picked up the changes. This is much cleaner, but still not entirely optimal..
@msaeger sorry for the delay in response - we've been heads down making ppe mask bands for the last two weeks straight. I agree with @Phaedrux that the advantages come with larger machines. This 30x30cm machine we've prototyped is the smallest we are going to offer. Our next build will utilize a 40x40cm bed, and it's here and above that we believe the design will really begin to stand out. Sneak peak - the next build will also utilize IDEX.
Thank you for looking into this. I understand the Duet 3 is quite new - I was just afraid to move forward with the Duet3+RPi combo if the PanelDue would have limitations. I feel the functionality provided by the PanelDue is the correct amount for direct control at the printer (with the addition of macros and jobs, etc). The web interface can be used standalone for the rest.. I did not want to go down the road of adding a monitor to the RPi as that adds complexity we do not want to support.
If you need/want anyone to help you beta test any changes around this, please let me know.
@msaeger sorry for the delay in response - we've been heads down making ppe mask bands for the last two weeks straight. I agree with @Phaedrux that the advantages come with larger machines. This 30x30cm machine we've prototyped is the smallest we are going to offer. Our next build will utilize a 40x40cm bed, and it's here and above that we believe the design will really begin to stand out. Sneak peak - the next build will also utilize IDEX.
@Phaedrux - Yes, the XY belt layout is to both get around the smooth rods and Z-belt as well as for tensioning - it works great!
The version in the video is using a single Igus 12mm bushing on each smooth rod. An updated version should be ready in the next few days that uses two bushings each.. we'll see if it is necessary or not.
Here are some photos of the z-belt connections. The piece that fits against the teeth is ribbed to properly seat itself into the belt and the holes are over-sized to allow it to properly fit in the front (more on that in a second).
rear connection:
front connection:
The rear is where the ends of the belt come together. After it is tightened (with the front connection removed), proper belt tension is applied. Then, the XY mechanism (still working on a good name) is leveled. Once leveled, the front connections are tightened onto the belt. The belt is now locked in place and the XY mechanism has no ability to lose alignment.
Yes, the bed itself is adjustable for fine tuning.
Thoughts?
@jpomo10 thanks! The relays only short the windings when power is removed.. with the proper belt tension, it holds its position.
@jens55 yes, Z is belt driven utilizing two steppers. I’ve posted a pic on Instagram of the relay board we are using as a motor brake when power is removed..
@jens55 said in oozeBot prototype:
Awsome machine, well done!
Do you have any print samples to show off ?
Thank you! We do have samples from previous iterations, but not yet from the near final design. That should be coming soon..
The travel on the prototype is 33x33x33cm but we plan on also offering larger designs and also have an IDEX version in the works..
Hi all, we are excited to finally show off the near final design of our machine. It is powered by a Duet3 and a toolboard mounted to the extruder. A video of it running at 400mm/s in all axes is posted below at our Instagram.
We have so much to learn about the Duet framework as our past experience has always been with Marlin, but we are ramping up fast..!
https://www.instagram.com/p/B-klDdcD_ld/?igshid=96tmsc5zuvkp
@Danal thanks for the assist..!
@Danal said in Duet3 with SSRs for bed and enclosure heaters:
Bed, it is OK to just use the 12 or 24V output that would have gone to a bed heater, use that to drive the low side of an SSR.
Thanks.. I get this approach for the bed heater, but thought it would be cleaner to use two other outputs. I think it all just clicked though when reviewing the M950 command in your config. Is there another gCode to associate the heaters to the bed, extruder, chamber, etc?
edit - I now see "M140 H0" in your config..
Disclosure: I am a Duet noob and documentation on the Duet3 appears to still be evolving.
I need assistance with how to wire SSRs for both bed and enclosure heater. I see plenty of posts on how to add SSRs with the Duet2, but unless I'm missing something, it's not translating to the Duet3. Plain and simple, I want to use AC for both the bed and the enclosure heater. What is the cleanest way to accomplish this? I don't need help with the SSR wiring - I just need assistance with what are the appropriate connections and the gCode to configure it. Thanks
@bondus This turned out to be the simplest solution... thanks!