The layout of the button circuit
We will use sound in this example, so you will also need speakers or headphones attached to the audio socket of the Raspberry Pi.
You will need to install a program called flite using the following command, which will let us make the Raspberry Pi talk:
sudo apt-get install flite
After it has been installed, you can test it with the following command:
sudo flite -t "hello I can talk"
If it is a little too quiet (or too loud), you can adjust the volume (0-100 percent) using the following command:
amixer set PCM 100%
