Step 7: Glue the Motor and the Battery

Glue the motor and the battery to the top of the brush. Make sure the extreme of the motor´s shaft extends well beyond the edge of the brush.
can u send me the scientific principle of it as fast as u can ?/ <br>
Do you mean the principle behind the vibrobots? It's the vibrating motor. This kind of motor is explained and shown briefly here: <br> <br>http://www.namiki.net/product/vibration/motor/tech.html <br> <br>Basically, an offset counterweight in the shaft creates an imbalance which produces vibrations. <br>Of course this is a technical principle more than a scientific one, because this doesn't explain WHY an imbalance produces vibrations: if I remember well, this has to do with the speed at which the wider part of the shaft turns compared to the thinner part. The wide part moves slower than the thin part because any point on its surface has to travel a longer radial distance as they are farther away from the axis. Thus, the centripetal and centrifugal forces generated by that end of the shaft can not be nullified by the other end, resulting in a vibration (but you'll have to check all this with a more authoritative physics source). <br> <br>Regards
why r 18
I don't know if I fully understand your question, but the contest was divided in three categories. I won in the &quot;above 18&quot; years old category the &quot;Simplest bot&quot; prize.
thats simple and cool so i voted you on the nrw contest .
Thank you!

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Bio: I have a background in computer sciences but I like all kind of disciplines where I can learn something (provengo de la informatica, pero me ... More »
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