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Path Planning for 3D Printers
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- Опубликовано: 2 янв 2017
- Join Derek Schulte as he talks the deep geeky truth about designing a path planning firmware for a 3D printer.
Derek Schulte works designed and sells a consumer 3D printer, and that gives him a lot of insight into what makes them tick. His printer, the New Matter MOD-t, is different from the 3D printer that you're using now in a few different ways. Most interestingly, it uses closed-loop feedback and DC motors instead of steppers, and it uses a fairly beefy 32-bit ARM processor instead of the glorified Arduino Uno that's running many printers out there.
The first of these choices meant that [Derek] had to write his own motor control and path planning software, and the second means that he has the processing to back it up. In his talk, he goes into real detail about how they ended up with the path planning system they did, and exactly how it works.
Read the article:
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Learn more about Derek Schulte:
newmatter.com/...
Learn more about the Hackaday SuperConference:
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The start is him talking about the hardware of his company's printer.
But at 7:41 he finally gets to the Path Planning talk, hold out until then at least because the talk suddenly gets very interesting.
9:35 I think jerk is the derivative for acceleration
Where can I learn more about path planning? I tried to read other repos (Marlin/Cura) and I find it difficult to understand. Any pointers?
Interesting to see the graphs at the end showing expected vs actual paths, as well as total path errors. I've never seen data like that before for 3d printers. I would love to see the same analysis with other common firmwares such as Marlin or Repetier with steppers, just to see how they compare.
Hoffman Engineering yeah definitely very interesting. I imagine that it would be tough to measure. I also really like the bump/stall homing and wonder how accurate it is. Certainly a great way to home the z axis. I think the Tiko does something similar, but with an accelerometer.
Z axis is within 50 microns.
I have one of these mod-t's. There's some irritating design flaws in it as far as i'm concerned, BUT the printer produces amazing results for it's price. Interesting to understand a little about how the machine works.
I've watched a few of these HaD videos, and the intro is just way too long and the music is grating after the first time.
This intro is always 30 seconds.
So just skip it: If you're in RUclips's default HTML5 player (ie: Firefox, Chrome, etc) - Hitting the L key 3 times will skip you forward 30 seconds. (Hitting the Right arrow 6 times will do the same thing).
Very interesting! There's more to 3D Printing than a simple cartesian box
I would like to see him do more talks, this was very interesting.
Specially about follicle implants.
What is the motor used? I wan't something similar for another project? Anybody have a link Motor with similar specs?
Small/low cost motor/encoder assemblies are difficult to find unless you have significant production volume. You might be able to find surplus parts however. Look for motors from Mabuchi, Johnson Electric (JEI) or NMB.
He's a very nervous speaker