Archive for the ‘Uncategorized’ Category

Turtle undercarriage

Saturday, June 28th, 2008

The underside of the “turtle” shows the gearing mechanism for transferring the rotations of the independent axles to the sensor wheel. Rather than using an optical encoder - which is basically just too expensive - the sensor wheels pass through the slots of two IR emitter-detector pairs. These TTL logic devices pull up digital pins on the Arduino and this signal is passed to a Processing sketch. The wheels do generate consistent data on the whole, which is what we were aiming for.

Desktop icons

Friday, October 12th, 2007

I never knew how to mac Mac desktop my jpeg and other image icons appear on the desktop as thumbnails. After a little searching I found out:

In the Finder hit command+J and check the ’show image preview’ box.
Should be a default setting but it’s not!