Exhibition Setup Detail
So about this detail.
What I wanted was an interactive setup of some kind. Proximity sensing seemed like a cool idea. Ultrasonic proximity sensing is cheap, effective and simple to set up. The visualisation changing as someone approached the exhibition seemed to make sense. The flow of information eventually could be described like this:
The proximity sensor was a Maxbotix LV-EZ0 which is described here. It was incredibly simple to solder and connect to the Arduino and comes in a variety of field angles i.e. narrow beam or wide beam.
The Arduino sketch I used can be downloaded from here. It's a default one from the Max6 tutorial files except modified for a low baud rate (less CPU processing).
Vizzie is a component of Max (version 5.1.7 or later) that is all about video control and effects. The same download above includes the Max6 patch which uses Vizzie objects. It used a simple serial read function to cross-fade between two videos. The mathematical function I used avoided jumpy changes, the stream of changing proximity sensor values were smoothed (or decelerated) before being passed onto the video control patch.
- - -
My original setup linked Grasshopper/Rhino to the proximity sensor, giving the effect of entering my primary building. The video then faded into into the visualisations and animations.
To achieve a link between programs I used Max again to send the serial value via UDP to a virtual machine running Grasshopper/Rhino. A UDP receive function in Grasshopper changed the values of a camera control component, altering the camera position according to a pre-set spline path. The part of the screen in the virtual machine showing the changing view was picked up using CamTwist, which quite easily fed back into Max for the video fading.
Processor intensive activity going on here!
This all worked fine however the processing in Rhino3D (because of the complexity of my model) was so slow it was ultimately unusable. Simple models work fine.
Feel free to comment, I'm interested to hear any thoughts and am happy to answer any questions.
The boards for my exhibition I've finally put online at danbates.carbonmade.com
What I wanted was an interactive setup of some kind. Proximity sensing seemed like a cool idea. Ultrasonic proximity sensing is cheap, effective and simple to set up. The visualisation changing as someone approached the exhibition seemed to make sense. The flow of information eventually could be described like this:
The proximity sensor was a Maxbotix LV-EZ0 which is described here. It was incredibly simple to solder and connect to the Arduino and comes in a variety of field angles i.e. narrow beam or wide beam.
The Arduino sketch I used can be downloaded from here. It's a default one from the Max6 tutorial files except modified for a low baud rate (less CPU processing).
Vizzie is a component of Max (version 5.1.7 or later) that is all about video control and effects. The same download above includes the Max6 patch which uses Vizzie objects. It used a simple serial read function to cross-fade between two videos. The mathematical function I used avoided jumpy changes, the stream of changing proximity sensor values were smoothed (or decelerated) before being passed onto the video control patch.
- - -
My original setup linked Grasshopper/Rhino to the proximity sensor, giving the effect of entering my primary building. The video then faded into into the visualisations and animations.
To achieve a link between programs I used Max again to send the serial value via UDP to a virtual machine running Grasshopper/Rhino. A UDP receive function in Grasshopper changed the values of a camera control component, altering the camera position according to a pre-set spline path. The part of the screen in the virtual machine showing the changing view was picked up using CamTwist, which quite easily fed back into Max for the video fading.
Processor intensive activity going on here!
This all worked fine however the processing in Rhino3D (because of the complexity of my model) was so slow it was ultimately unusable. Simple models work fine.
Feel free to comment, I'm interested to hear any thoughts and am happy to answer any questions.
The boards for my exhibition I've finally put online at danbates.carbonmade.com
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