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Lecture notes

Subtractive, Something that can't be made with the cnc, laser cutter or vinyl cutter

Test overhangs Test everything of 3d printer

3D printing

Being able to get inside the body and create complex designs.

It can fail

Create much finer surface finisher using other machines

Can print tranclucant, very strong materials. PLA, plant based renewable polymer PETG oil based, stronger, good uv resistance

Most filaments are hydroscopic. They degrade over time. Filaments needs to be stored dry.

Concerns 3D printer

Ultrafine particles PLA least, ABS most

Design rules

  • Supports

  • Infill. Dense: slow to print but strong. Not dense: fast but weak

  • surface finish
  • prevent sharp corners. Otherwise you may get weak corners
  • Weak bed adhesion: Print doesn't stick and if it lets go during print you get spaghetti.
  • Warping

Post processing

  • Electroplating
  • Some kind of oil to make it look better

Wire Arc additive manufacturing: Metal 3D printing

File format

stl, 3mf. Often used 3d format

.obj, Made my autodesk often used to described colors

.dxf, terrible for 3d

.gcode, widely supported. Ancient

Software

Meshlab, Let's you look at meshes and fix them.

Slicing, Converts the 3d model to Machine readible instructions. Cura, Bambu Studio, Prusa slicer.

Printer interfaces, To check your printer remotely. OctoPrint, Printrun

Printer Firmware, Klipper

modelviewer.dev. To embed 3d designs into site.

3D scanning

CT 3D scanning (Super expansive)

Scanners

Light Probe
Digitizer Photogrammetry (pictures)

Assignment

Group: Test the design rules of your printer Individual

Design and print something that is impossible to make subtractivly. Nested parts, overhangs

3D scan

Thursday

3D printer software. Ender, Prusa all run marlin Voron runs klipper

GCode

Gcode is like assembly. You don't wanna write it by hand. Gcode get's used in anything that has x,y,z or rotating. Printers, cnc, lasercutters.

G = for positioning the printer head M = tool and machines set up E = extrude ; = comment

G92 = set position

FullControlGcode designer to generate custom Gcode easy

Brick laying 3d printing is strong but patented

INFI 2 conveyor belt printer

PETG, bit more bendable ABS, Sturdy, heat resistand. Print it at a higher temparature and it's toxic.

Non planer infill with bricks

https://howtomechatronics.com/tutorials/g-code-explained-list-of-most-important-g-code-commands/

All Gcode Commands what they do

Most problems of the GCode are in the setup part of the GCode

3D scanning

Software: Creality scan Camera: CR scan ferret

texture to geometry geometry works better on faces

easy to make is a chain.

Recitation about AI

Embedded AI/ML

TinyML concepts and applications

TinyML limited to low power devices

core values

Machines learning applications for mcu's ultra low power small devices KB-level memory local processing, real-time response

advantages: * better privacy * Low latency * offline operation

Applications

Machine vision Sound and vibration sensing Motion and posture recongnision Envoirmental monitoring and control

Toolchain and platform introduction

TensorFlow Lite PyTorch mobile EDGE IMPULSE STM32 cube AI SenseCraft AI

SenseCraft * Zero code Model deployment * Online model training * Flexible inference output

Can be connected to mqtt or other pins without coding

How to make almost anything almost without making anything

vizom.ai https://lumalabs.ai