User Manual

Project 44 Variable Disco Speed
Turn on the slide switch
(S1); the display on the LED-
MC (U29) shows “00”. Press
the A button on the selector
(S8) to increase the ones
digit on the display, and
press the C button on the
selector to increase the tens
digit on the display. When
the display shows “21”,
press the B button on the
selector to start.
The red/yellow LED (D10)
will be blinking at varying
speed, and the disco motor
(DM) will be spinning at
varying speed. For best
effects, view in a dark room.
Use the preceding circuit, but reverse
the red/yellow LED (D10), or replace
it with the red LED (D1, “+” on right),
green LED (D2, “+” on right), or the
speaker (SP2).
Project 46
Loud Click
Rate Changer
Use the project 44 circuit, but replace
the disco motor (DM), including the
blue jumper wires to it, with the
speaker (SP2).
Build the circuit as shown, place one of the disco covers on the disco
motor (DM), and turn the slide switch (S1). The disco cover rotates as the
LEDs in the disco motor light. You can change the speed by pushing the
press switch (S2). The speaker (SP2) is used here as a resistor to limit
the current and will not produce any sound.
Project 47
Two Speed Disco Ball
-30-
Project 45
Variable Disco
Speed Variants
Disco Cover
SUPPORT BAR
Disco Cover
SUPPORT BAR