Rocking Switch; Disco Ball Switch; Disco Ball Melody; Rocking Switch Leds - Elenco Electronics SC3DMEG Instruction Manual

Project 95
Project 96

Disco Ball Switch

Note: If the LED
assembly fit seems
loose add a 1-snap
wire between one of
the 3D snaps and a V1.
Project 97

Disco Ball Melody

Rocking Switch

Build the circuit, then place the magnet across the base grid
supports as shown. Turn on the slide switch (S1) and the red
LED (D11) starts blinking. Slowly rotate the reed switch (S9)
towards the magnet. When the reed switch is close enough to
the magnet the switch closes, the lamp (L4) lights, and the LED
turns off.
The magnetic field holding the switch closed decreases as the
switch moves past the magnet. The switch opens again, lamp
turns off, and the LED blinks.
Reed switches are used in
security systems to indicate if a
door or window is opened.
Project 98

Rocking Switch LEDs

Use project 95. Place the color2 LED (D12)
and the blue LED (D9) across base grid
locations F4 & F6 and G4 & G6 on level 1.
Connect the LEDs using 2-snaps across F4
& G4 and F6 & G6 on level 2. Place two blue
jumper wires (J4) across E4 & F4 and E6 &
F6. Now, all lights turn on when the reed
switch is closed.
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