Logiblocs Super Inventor's, Руководство изобретателя

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18
LET'S GET CONNECTED
It is often very important that machines know where they are and what is going
on around them. They are continually checking to make sure that all is well.
For instance, a photocopier needs to know if there is any paper in the tray
before it tries to make a copy. An electric window in a car needs to know
when the window is fully open in order to stop the motor and avoid
damaging the mechanism that powers the window.
These machines often use microswitches which tell the machine when it has
reached a certain point. So when the switch is pushed the circuit is completed
which sends a signal to the controller to start or stop the next function.
This is exactly what the Logiblocs IN block can do. We don't bother with
switches but do the same thing by simply touching the two Jack Plug wires
together to complete the circuit. The IN block then tells the other Logiblocs
to get to work just as though a BUTTON had been pressed.
There are loads of ways that these two wires can be fixed up to act as
sensors. We have shown you some ideas in the following pages, but this is a
good time to experiment with designing your own sensors to make your own
gadgets using your own imagination!