27. Magnet, Switch & Press
Switch-controlled Fiber
Optic Tree Series Connection
Build the circuit, press the switch (62),
then hold the press switch (61). Move the
magnet (7) towards the reed switch (83).
The colorful LED (72) will turn on. The fiber
optic tree (40) will light up with the colors
of the LED. If you move the magnet (7)
away, the light will turn off.
28. Magnet, Switch & Press
Switch-controlled Bi-directional
LED Series Connection
Build the circuit, press the switch (62), then
press the press switch (61). Move the magnet
(7) towards the reed switch (83); you will see
the bi-directional LED (71) turn on with the blue
light. If you move the magnet (7) away, the bi-
directional LED (71) will turn off. Install the bi-
directional LED (71) in the reverse direction and
move the magnet (7) towards the reed switch
(83). The bi-directional LED (71) will turn red.
Red Light
Blue Light
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