1.Learn to control LED light.
2.Learn to control the buzzer tone.
1.RGB LED lights
The RGB LED light is a output light source
device. It can output light of any color through
the tri-color of the red, the green and the blue.
2.Buzzer
The buzzer is an audio device, but also
an output device. It can control the
dierent output frequencies so as to
give a dierent tone.
3.Button
The button is an input device.
It usually denes dierent functions depending on
the application scenario.
1.How to apply buzzer
2.How to apply RGB LED lights