Instructions

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15 Setting from green to red
In this experiment, we create an LED with adjustable colour.
It shines either red or green or in both colours. With the
potentiometer you can adjust the brightness of both LEDs.
If the green LED shines brighter when turning to the left, the
red LED will shine dimmer. And if you turn the potentiometer
more to the right, the red LED will shine brighter while the
green LED will be dimmer.
If you shine the LEDs on a piece of paper and align them so
that they create a single spot of light, the red and green light
will together shine yellow. You can adjust all colours using