unl-digifab

Week 11 - Making Things Move II/Digital and Analog IO

Tuesday

Thursday

Tuesday

Agenda - Making Things Move II

• Artist of the Day
• Motor Mounts
• Homework
• Office Hours this Week

Artist of the Day

Daniel Rozin

• Wooden Mirror
  • Thousands of servo motors
• Longer video from Wired (2019): https://www.youtube.com/watch?v=kV8v2GKC8WA
• Wooden Mirror (2000) in SIGGRAPH Archives: https://digitalartarchive.siggraph.org/artwork/daniel-rozin-wooden-mirror/

Motor Mounts

• Boolean subtraction
• 2d outlines then extrusions/cuts.
  • BEST WAY TO DO THIS:
  • MeshOutline produces a 2d outline of a 3d shape. https://docs.mcneel.com/rhino/7/help/en-us/commands/meshoutline.htm
• Test prints to test fit.
• Working with screws and nuts.

Homework

Continue work on Making Things Move. NOTE: due date was moved to Monday.

Office Hours

Wednesday, 2-4pm.

Thursday

Agenda

• Artist of the Day
• Arduino Refresher
• Physical Computing
  • Analog Output
  • Analog Input
  • Servo Sweep
  • Servo Knob
• Homework

Artist of the Day 2

Marguerite Humeau

• The Rebirth of Prehistoric Creatures
• making of video

Arduino Refresher

• Install the arduino software on your computer: https://www.arduino.cc/en/software
• Explore the Basic Blink example:
  • 

Analog Input

https://www.arduino.cc/en/Tutorial/BuiltInExamples/AnalogInput

• Talk about Voltage, Current, and Resistance (Ohm’s Law)
• Talk about using a multimeter.
• Look at how a potentiometer (as voltage divider) changes voltages.
• How a changing voltage corresponds to an analogRead()

Servo Sweep

• Install the Servo library:
  • Tools -> Manage Libraries:
    • 
  • Search for Servo. Click Install:
    • 
  • Select the “Sweep” example:
    • 

https://www.arduino.cc/en/Tutorial/LibraryExamples/Sweep

• How to read a schematic
• Pulse Width Modulation
  • (analogWrite()!)
  • more on PWM Secrets of Arduino PWM

Servo Knob

• Under Examples -> Servo, select the Knob example:
  • 

• Reading the schematic.
• Use the servo to control two knobs.

Homework 2

Finish Making Things Move. (Due Monday). Be ready to demo on Tuesday.

Reference

• [TK]