The AWS DeepRacer car has a manual mode which is quite fun however using a phone or tablet screen as a touch input device isn’t great.
Playstation 3 controllers however are cheap and wireless.
After a few hours of hacking I’ve come up with a basic interface using pygame to allow wireless remote control of a DeepRacer car. The video stream is provided so that you can (hopefully) see where you’re going.
It’s quick and dirty but it works… code is available at https://github.com/mattcamp/deepracer-ps3
EDIT: Since originally writing this people have discovered much better ways to achieve this same thing but interfacing the game pad directly with ROS. Check out Allison’s awesome solution at http://www.lyonthackston.com/articles/4_aws_deepracer_joy_onboard.html