FLOATER DETECTOR (Microswitch)
This is the place where the user puts the floater. A red light below the polyester cover highlights the time-span available for recording.
MAGNETIC CART (DC Motor + Worm Gear)
The magnetic cart is moved thanks to the DC Motor that turns the worm gear. The bolt below the cart grants the movement, converting the rotation is a linear shift. The magnets pull the floater along the whole basin’s length.
WAVE GENERATOR (DC Motor)
The second DC Motor is controlled by Arduino in order to make it oscillating within a 45° angle. In our case water and friction may cause an oscillation range slightly lesser than 45°.
THRESHOLD DETECTOR (Microswitch)
We have two switches of these, one at each end of the basin. When the switch is reached by the magnetic cart, this one will stop. In this simple way we know that the cart has reached the end of the worm-gear and the message is about to be delivered to the other basin.
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