User Manual

Project 16 Busy Circuit

Place one of the disco covers on the disco motor (DM) shaft. Note that both sides

of the support bar are “D-fit”. Turn on the slide switch (S1). An alarm sounds, the

disco motor spins & lights, the LEDs (D1, D2, & D10) light, and the programmable

fan spins and displays a message. Push the press switch (S2) several times to

display different messages. Place the circuit in a dimly lit room for best effects.

Variants:

1. Change the alarm sound by connecting the red jumper wire across points X

& Y, or X & Z.

2. Make the disco cover spin faster by shifting the 2-snap wire across points A &

B to points B & C or points B & D. The blue, orange, & black jumper wires

must stay connected to the 2-snap wire.

WARNING: Moving parts. Do not

touch the fan while it is spinning.

-18-

This circuit has a lot

going on.

Disco Cover

SUP

ORT B