I have used Google Voice Hat for motor control, But,you can use any other motor DC motor HAT (eg Adafruit DC Motor HAT). If in case you are using Google AIY voice HAT ensure you isolated power jumper from raspberry pi power, Read AIY manual. Also you need 2DW robotic base, GoPiGo based, I have build some additions to manage the Pan Tilt which I am planning to use it for this project upgrade.
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