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