13 Sail
When Sail Bot encounters headwinds, it turns to avoid them. Unlike the previous bots with DPDT switches that change direction only when they press their own levers, Sail Bot momentarily changes direction only when wind activates its lever. In other words, when there is a gust of wind, the bot turns to avoid it; otherwise, Sail Bot goes about its business. Although it may seem simple, this behavior is actually fairly complex, considering that the circuit, in a sense, is just a collection of switches.
Tools and Supplies
- Two continuous-rotation servo motors with the controllers removed
- A 4 × 9½ × 2-inch plastic utensil holder
- A 4 ...
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