Sunday, December 5, 2010

Tuesday-Wednesday 10/26-7 (37-36 days left)

Group meetings were disorganized and lacked motivation. Discussion would last a few minutes but would fade to aimless chatter before anything of value was said.

When crunchtime came around, we were able to get something that worked. Most of our sensors (i.e. the ones we had the correct parts and data for) worked on their own, and we had a slight issue with actuating them in tandem, but we were able to make the solenoids work with the help of the external DC power supply and the LEDs with prompts from the Ultrasonic Range Finder. While we had working programs for the Pressure sensor and tilt ball sensors, neither made it into the demo; the voltage across the pressure resistor was too high and the device would just heat up and not produce an LED response upon being pressed, and the tilt ball sensors were inaccurate and therefore not worth demo-ing.

The form this ended up taking was as follows: a Merkur stand with LEDs lining the vertical piece of the structure and a rotating lever that accentuated the upward and downward motion of the solenoids. The solenoids, when actuated, would push down on one end of the lever, pushing the other end up to approximate our desire to have “pixels” in some pattern that when pushed or pulled would allow light to come from a light source behind the surface (we would likely mount it in front of a window). As the URF read in values of increasing proximity, the LEDs on the vertical Merkur piece lit up from bottom to top. This was as complicated as we were able to get, but we felt it adequately demonstrated our desire for the surface to react to multiple stimuli in various ways. Pictures will come!

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