List of Raspberry Pi GPIOs used in the project

GPIO Number in BCM	Purpose
25	Assistant activity indicator for AIY Kits
23	Pushbutton to stop music/radio AIY and others
05 and 06	Google assistant listening and responding
22	Pushbutton trigger for gRPC API.
	Connect a pushbutton between GPIO 22 and GRND for manually triggering.
12,13,24	Voice control of devices connected to GPIO
27	Voice control of servo
17	IR Sensor for preset commands

Note

Some HATS may use GPIOs 18, 19, 20, 21 for I2S audio please refer to the manufacturer’s pinouts