This instructable was made as part of the final project requirement in the CS graduate course "Tangible Interactive Computing" at the University of Maryland, College Park taught by Professor Jon Froehlich
. The course focused on exploring the materiality of interactive computing and, in the words of Hiroshii Ishii, sought to "seamlessly couple the dual worlds of bits and atoms." Please see our course wiki
for more details.
Inspired by MIT Media Lab's "Living Wall"
, we created this interactive wall to imitate a living circuit at the University of Maryland Human-Computer Interaction Lab
Hackerspace. Functionalities include lit up grapes, capacitive touch sensors to toggle lights on selected grapes, homemade butterfly speakers, and removable LED butterflies which we like to call butterflights!
Please keep in mind that this is a work in progress!
We've been able to work out some parts of the wall so far, however this in an ongoing project that will hopefully be done sometime in the beginning of February. We wanted to offer the instructable community of how to do what we've done so far!
:) I'll be providing updates on how to do each part once a section is finished. If you have any questions, please leave them in the comments section below. We'll do our best to help out! Happy hacking. :)
A bit about the "why":
A project like this takes quite a bit of planning and customizing depending on the amount of space you have on your wall/canvas. You may find yourself changing certain steps, like the circuit diagram, to adapt it to your wall. The main idea behind this project is to merge the hardware and circuitry we often work with in the hackerspace with the outside world. Our hackerspace has windows, but these windows don't lead to the outdoors. So we decided to bring the outdoors...well, indoors!
Since the circuits looked somewhat like vines, we thought it would be neat to make grape vines out of the circuits, and simultaneously make them interactive. Fun!
You'll find that many parts of this projects were taken from open-source code, instructables, and tutorials from other people. We'll link you to all of these sites as we move along this instructable.
Let's get started!
What you'll need:
Art supplies (all can be found at Michael's or any other art store)
- Various colors of acrylic paint (you can customize this, but we used different shades of green and red)
- Small, round paintbrushes
- Modeling paste
- Artificial grapes
- Artificial grape vines with leaves
- Artificial butterflies (we used both small and large sized butterflies)
- ATtiny85 (1 for each capacitive sensor created)
- LM386 audio amplifier (1 for each speaker created)
- Arduino Uno
- Mosfet Transistor (x3)
- Voltage Regulator (x2)
- Heatsink (x3)
- Clear, white LEDs (we used about 155 of them)
- Various resistors (will discuss how much is needed)
- Various capacitors (will discuss how much is needed)
- Copper Tape (make sure both sides are copper; some have silver on one side)
- Copper wire
- Neodymium magnets, tiny(about 1cm across) and large(about 3/4inch across)
- 15v AC/DC power adapter (you'll need to strip these wires, so use one that you don't need for anything else)
- Audio cable (you can use an old pair of headphones)
- Soldering iron
- Wire Cutters
- Wire strippers
- Some AA batteries for testing
- Painter's tape (we didn't use this, but it would be very helpful to have some)
- Hot glue gun
- Hot glue
- Pencil (one that can easily be erased)
- A good eraser (we don't want smudges)