Four-way flashing light
Behind the 24th door you’ll find a resistor
with only 1 k
Ω
(brown, black, red). It is
used to achieve a larger LED current and
more brightness. The circuit uses all LEDs
together. All show a flashing flickering
light controlled by the RGB LED and
transistor. In addition, the photo transistor
is built in to switch off the flickering at
high brightness. With this, you can build
24
a Christmas LED lamp that only becomes
active in the dark. The lights look like
sparkling stars and flickering candles.
You have now completed so many
experiments that you can easily implement
your own ideas and requests for
modification.
You know how to make a flash or a sound,
how to change the LED brightness and
much more. Take all components and
continue experimenting with them. Maybe
someday you’ll invent new things.
