4
Fr ? =
(Keyboard)
The
FruitKey
works on any conductive objects. You can also spray some water on the object’s
surface to make it work.
Preferred objects: banana, lead pencil, ketchup, lemon, and other plant; coin, jelly, cat (or
dog, etc.), or, human being.
How Does It Work?
As long as the object is conductive, the
FruitKey
can work with it. The principle is that a
single-chip microcomputer simulates some keys on a keyboard, and circuits will be connected
by a touch rather than a switch.
The
SunFounder
FruitKey
uses a touch as the input signal. It adopts two-point touching switch.
The alligator clip cables are connected to the touching end and ground on the board, while
connected to the anode and cathode on the other end. When someone touches the anode
and cathode as a resistor, currents will flow through the power to ground on the board. Thus
the current value can be detected, then the touch.
Let your imagination go wild and turn anything into a keyboard!
SunFounder
