As discussed in a recent post about generative design, I’ve been working on an interactive, generative CAD model to be exhibited at Design Philadelphia, in the Crane Arts Center. Well here is a preview of the [nearly] complete CAD model created using Grasshopper and Firefly within Rhino. Using 2 Wii Nunchuck controllers, 2 people can work together to customise the design of a 3D printable light cover in the form of a lightbulb – in essence, CAD modelling has been turned into a game that requires no instruction and is learned through play.
The biggest challenge with this has been getting the signal out of the Wii controllers. While Firefly has built-in Wii Nunchuck compatability, unfortunately I learned the hard way that it is only compatible with genuine Nintendo Wii Nunchuck’s – and I already bought 3rd party ones off Ebay for a fraction of the price. For some reason 3rd party controllers use a slightly different signal/code, and while the Wii console has no problems with this, the Arduino code is a little more particular. Thankfully after an entire day of messing around, ripping apart controllers, tweaking code and swearing, I managed to find a way in! I had to modify some Arduino code and also use the Serial Read tool in Firefly, running the Arduino IDE in the background and listening in to the readings.
As mentioned in the video I am 3D printing 6 examples of what these outputs look like in real life – this model is not just for fun, it is actually designed to create real products suitable for 3D printing, based off a previous design of mine for a Shattered Faceted Lightbulb which you can download for free on both Pinshape and Thingiverse.
Stay tuned for a look at these 6 prints, which have been printing for the last 94 hours on a Fortus 250mc 3D printer. Yes, 94 hours!
– Posted by James Novak