Now that you can access your Raspberry Pi from a remote computer, you can SSH, just like you may have been doing with a wired connection, issue commands, and even control the biped using the remote computer. This introduces a number of different possibilities, one of which is to control your project with a joystick connected to the remote computer.

To add the game controller, you'll need to first find a game controller that can connect to your computer. If you are using Microsoft Windows as the OS on the host computer, pretty much any USB controller that can connect to a PC will work. The same type of controller also works if you are using Linux for the remote computer. In fact, you can use another Raspberry Pi as the remote computer.

Since the joystick will be connected to the remote computer, you'll need to run two programs: one on the remote computer and one on the Raspberry Pi on the biped robot. You'll also need a way to communicate between them. In the...