stack.

2016/Assistive Tech

stack. is a working prototype for a device that can help people with visual disabilities to create simple 3D models using the tactility of Legoes. Using computer vision via OpenCV, Unity3D, and a Lego board, the user can prototype and then 3D print simple cube-based models that they create layer by layer. Here is a quick video:

How it works

I used a Processing 3.0 flavor of OpenCV to do color detection on a grid-divided Lego board. If there was a Lego detected within one of the squares then a signal was sent to Unity3D via OSC that a Lego is now occupying that portion of the grid, and a 3D cube was then rendered in the relevant square on the field in Unity3D.

Here is the prototype interface:

The implementation is still a bit simple, but I am currently working on implementing a more robust and accessible interface, mainly adding audio cues and programming the Unity3D portion out into a standalone application.