User Manual

Turn on the slide switch (S1);
the display on the LED-MC
(U29) shows “00”. Press the A
button on the selector (S8)
three times to make the display
show “03”, then press the B
button on the selector to start.
Every half second the speaker
(SP2) randomly plays one of
three siren sounds, the U29
LED display shows a random
pattern, and the red LED (D1)
will be on, the green LED (D2)
will be on, or the display on
U29 will be blinking.
You can slow this circuit down
by selecting game “01” on the
display instead of game “02”.
Use the preceding circuit,
but remove either one of the
red & orange jumper wires.
Now only one digit of the
LED display blinks.
Modify the project 176 circuit to match this one, which adds the
red/yellow LED (D10). It works the same way, but has three LEDs and
only the left digit on the display will blink.
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Project 177
Blink One
Project 176 Arcade Blinking Display
Project 178
Triple Light Blink One