September 2006

General

Stirling Engine

Matt, Teresa and I built a full-scale Stirling engine for use as a power source for a future mechanical computer. Stirling engines are external combustion engines. This one will derive its power from pressure differences created by the exchange of heat between hot and cold water compartments. We’re a bit concerned that the crankshaft may […]

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General

Paper Clock

Matt, Teresa and I created a paper clock from a kit using X-Acto knives, white glue and human tears. While the tolerances weren’t close enough for it to actually keep time, we learned quite a bit about the internal mechanics of timekeeping, and spent 20 happy hours together in the Physical Computing lab. Clocks rock.

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General

Tentative Design Schedule: Object-Oriented Objects

9/20. Define project precisely. How many behaviors per object, how many objects, what behaviors, what variables, how communications will work… 10/4. Interactions chosen, Objects chosen and roughly illustrated. 10/18. Prototype of objects and interactions ready for initial user testing. 11/1. Engineering for networking completed. Robust communications. Draft CAD drawings for objects. 11/8. CAD of objects

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