Instructions

29
Game and Knowledge in Electronics-Lab
Using the tricolour LED,
the potentiometer and
a wire connection C-G,
your micro-controller
turns into a disco light
controller. All colours
and mixed colours of the
colour LED are switched
on in succession. You
can adjust the speed
with the knob.
Turn the rotary knob all the way to the left, your film
runs very slowly. You’ll see a running LED light where
the LEDs are switched on successively from 1 to 6. Turn
the knob further to the right and the lights get faster.
Now you will only see one point of light that moves
quickly over the row. If you turn the knob all the way to
the right, the movement becomes so fast that you can
follow it with your eyes. It looks as though all six LEDs
light up at the same time. You can only see a flickering
clearly. Film works in the same way. Because the im-
ages are shown in very quick succession, they are no
longer distinguishable as individual images.
Do you remember the trick how to make really fast,
even faster in an easy way? Exactly! You only need to
remove the cable to the potentiometer. The succession
of images becomes so fast that it really looks like a
uniform light. But if you move everything
back and forth really quickly, you can
see individual points of light again.
26
Disco light show
Let the disco light run along to your
favourite music and set the speed
according to its rhythm. Darken the
room so that only your coloured light
can be seen. And then let’s dance!