Engineering propulsion of cubes

Now that we improved floatability and overall structure, it's time to move on (pun intended) to more... movement. The Korebot Linux embedded computer (60 grams with WiFi card) from K-team in Switzerland will do the job. Other than that, we chose Lithium-Ion Polymer for our energy source. We kicked NiMh out because of its memory effect, because of less-predictible voltage drop, and because of hard-to-assess differences of performance between the various elements composing a battery package. We're using Devantec's SRF08 ultrasonic sensors for obstacle detection. On the table, you can seethe propulsion prototype with batteries, engines and wires.