Day 14: (Mon Oct 19, Week 8) Fabrication at Home

Notes for 2020-10-19.

Notes from Day 13

See the Design Catalog below.

New Assignments

  1. New assignment, due in about a week: Part 2 of Demo: Ambient Telepresence

  2. New assignment, due before next class: Exercise: Clay Linkage

Daily Agenda

  1. Administrative

    1. If you would be interested in using the lab during class time, please email me. I’ll need to coordinate with staff, but this is possible.

  2. Design and process reviews

  3. Q&A

  4. After class

Design Catalog

Design Concepts

  1. making marks with a whiteboard marker

  2. rotating a disc

  3. moving a linkage

  4. waving a hand

  5. raising a flag

  6. keyring holder/dropper

Movement Concepts

  1. erratic, twitchy, fast-paced

  2. smooth rotation

  3. slow steady ticking

  4. fast reciprocation

Materials

  1. laser-cut kit parts

  2. tape: masking tape, electrical tape, duct tape

  3. kit dowel pins in 1/4 inch holes

  4. string, monofilament line

  5. kit tongue depressors

  6. rubber bands

  7. kit shoulder screws

  8. paper clips

  9. cardboard

  10. kit ball bearings

  11. glue

  12. keyring with keys

Construction Techniques

  1. motor shaft used as a pivot bearing

  2. stacked popsicle sticks as a spacer

  3. pull/pull bidirectional dual-string drive

  4. shoulder screws as fasteners

  5. paper clips as axles

  6. paper clips as servo horn extender

  7. paper clips as linkage rods

  8. tongue depressors as linkage links (with added holes)

  9. dowel pins as wood-to-wood fasteners

  10. dowel pins as shafts

  11. single ball bearings used as pivot

  12. shoulder screw used as pivot shaft directly in wood

  13. device taped to bookshelf bracket

  14. wooden parts assembled as clevis for dual bearing support

Sensor Mapping and Data Semantics

I haven’t analyzed the code yet, but based on the video:

  1. one-to-one mapping from sonar to servo angle

  2. sonar maps to tempo of an oscillating motion

Other Ideas

  1. springs as compliant bearings

  2. creased cardboard as flexure bearings

  3. folded cardboard as a structural element