S2 2018 workshop

Reiterating Notes

• No need to feel peer pressure when other group builds full scale

• Use recycled materials
  • A box of cardboard
  • Used servos
  • Used wires/sensors

Video Playing/UI

• Borrow LCD screen from ITS

• Tablets

• Mini-projectors

• Using touch screen to prototype tangible interface (Just need to properly ground the touch points)
  • https://youtu.be/fqOW84ZTL7k?t=35 Auto game player
    
  • https://youtu.be/w-_QeFKPoc8?t=7 Touchscreen push button

Audio Playing

• MP3 module ( not recommended as the hassle some students went through get them to work )

  • Problem being no other pins usable : https://learn.sparkfun.com/tutorials/mp3-player-shield-hookup/hardware-overview

• Bluetooth speaker with PC/tablet/phone

  • Example: ( unfortunately back then,2013 the students weren't aware of the bgm used, and the video was taken down )
    

  • BTW royalty free music provided by youtube: https://www.youtube.com/audiolibrary/music  ( Seems past students like using the first few pcs from : https://www.bensound.com/royalty-free-music/corporate-pop which leads to same music )

  • For software side, a lot of prototyping tools can be used

Sensors

• Touching

  • A few touch points
    • It's possible to use only arduino and copper tape SD5509 Final Project Phase 3 / The instruction → Original indepth instructable: How to use touch sensors with Arduino
  • Many touch points
    • MPR121→ https://makerfabs.com/Sensor?product_id=584 (This is found in Shamshuipo shop)
    • Bareconductive → https://www.bareconductive.com/shop/touch-board/
• Proximity ( You already know )
  • Ultrasound ( Bad for multi-tasking )
  • IR

• It's OK to have bulky electronics separate from the operating unit
  • https://youtu.be/FXBe26N7pEw?t=21  /  Instructable dancing matte ( up for 2 weeks )
    
  • Instructable interactive glove ( up for 2 weeks )

Miniature building

• Laser cutting ( You ready know that )

• Using cardboard

  • Software pepakura: https://tamasoft.co.jp/pepakura-en/
    

  • Note you won't be able to save doing testing, however if you decide to choose this method of construction, we do have a license on one PC inside V611.

• We do have a https://home.cricut.com/ for you to use.
• 3d printing( only small scale, extremely slow )

• Following the unwrapping workflow:
  • https://www.robives.com/
• A good example of linkages:
  • 10 Fold Linkage
  • Solvespace: http://solvespace.com/index.pl

Specific to groups

• Lighting
  • For on/off, you'll need Relay (Digital Out)
    
  • For dimming, you'll need specific driver, in this particular case you can use motor driver (Analog Out)
• Coin module
  • There's actually a used coin recognition module 
• Liquid Color changing
  • If you want to stick with the original chemical idea (Needs refilling all the time)
    • Small electric pump (like the tea project) might work, but you'll need to control the filling and draining of the system.
  • Using screen/projection mapping
    • This is easier to do and stands more cycles when exhibiting
  • Use of color changing ink
    • Use electric heat generator + heat color changing ink ( but you might not have time to experiment with the circuit shape )
• Bracelet group
  • Projection mapping
  • Hand sensing can be as simple as IR transistors pair
    
• Fruit group ( Quite big construction if done full scale, is it possible to have a smaller version )
  • Reference: 
  • Track and motor driver
  • A pressure plate of some kind ( can be as simple as a micro switch and a hinge)
    

• Motion sensing

  • We do have Kinect 1 (The old one), but the libraries might be hard to find.  SDK: SDK for Kinect v1
  • Leapmotion.
  • Or simple distance sensing ( less reliable )