Intended for raspberry pi's.

Get Pi's IP with ifconfig. You will need it later.

To run, use sftp to transfer to Pi then cd into the directory, type npm install. When it finishes run the script by sudo node app.js (it requires sudo privileges because GPIO requires them. Feel free to mess around with the pin numbers).

When it is running, go to your desktop/mobile/any(device connected to the same wifi) and open the browser (Firefox/Chrome, IE will not work). enter the IP address of the Pi like so: 192.168.1.11:3000. The server runs on port 3000. Then you can press keys j, k, l, and i to move. To stop press o.