How to Emulate an Xbox Controller with Arduino (XInput)

In my opinion, one of the more novel things you can do with an Arduino is put it to use as a custom game controller for your favorite games. Whether you’re retrofitting a Nerf gun, converting a rhythm controller to play an FPS game, or playing PUBG with a frying pan – using an Arduino makes it quick easy to build your own custom controller. In this tutorial, I’m going to show you how to program your own Arduino to emulate an Xbox controller using the ArduinoXInput library.

Arduino XInput Library

Recently I’ve been playing around with building various alternative controller projects for games, typically using an Arduino-compatible microcontroller acting as an HID input device of some sort. The Arduino ecosystem makes it easy to set up these projects to act as either a Keyboard, a Mouse, a DirectInput Joystick, or a composite device that’s a combination of the above. Unfortunately back in 2005 DirectInput was supplanted by XInput with the release of the Xbox 360 controllers, and modern games have been weaning off of it ever since. These days, many mainstream games barely support DirectInput at all. Games like Rocket…

Understanding the Xbox 360 Wired Controller’s USB Data

One of my recent projects has been trying to modify some microcontrollers to function as XInput devices, emulating an Xbox controller. The first step in this process is to fetch and then break down the device’s “USB descriptors”. These descriptors are a hierarchy of standardized reports that describe features of the device including who makes it, what version of USB it supports, how it’s powered, and more. By copying the Xbox controller’s descriptors onto my own device, I can convince the computer that my device is also an Xbox controller and will behave like one, and therefore use the Xbox…

Experiment: Wii Nunchuk Controller for CS:GO

Earlier this week I was browsing Reddit and came across this interesting post of someone playing a game of Counter-Strike: Global Offensive (CS:GO) using a Wii Nunchuk to aim. They used a cheap Chinese “Classic Controller to USB” adapter to connect the Nunchuk to their PC, then set up JoyToKey to convert the gamepad inputs into mouse movements. This was pretty interesting, but I thought I could do one better. You see, I’m currently working on my own project that uses two Nunchuks for a custom controller. So when I ran across that Reddit post, I already had a breadboard…

HID Buttons Library for Arduino

As I keep working on a number of custom controllers using Arduino boards, I noticed that I tended to build the same sort of data structures every time; things to make it easier to write my own code using the built-in Arduino libraries. One of these bits I kept rebuilding was a wrapper class for the keyboard and mouse libraries that kept track of the keys I was using and their associated output states so that I could set them with a single line of code. Now instead of building yet another version of the same thing for my next…

Playing Lucio with a DJ Hero Turntable

Earlier this year while I was hard at work on the Nintendo Extension Ctrl library, I challenged myself to try and support as many different types of controllers as possible. As a part of that I picked up a DJ Hero controller for the Nintendo Wii on Ebay for $10. And then it hit me: with a little bit of effort, I could write some code that would allow me to play the character of Lucio in Overwatch using this turntable! So that’s exactly what I did.

Nintendo Extension Ctrl Library

Late last year when I was putting the finishing touches on the McCree Hammershot project, I decided to use a Wii Nunchuk hooked up to an Arduino for the controller’s movement. Although I eventually got it working, I had to try a variety of libraries before I found one that would even read the data properly. Most of them were convoluted, bloated, or poorly documented. Even the library I eventually ended up using was designed for controlling motors with a Nunchuk, not for just reading control inputs. It’s now many months later, and once again I’m looking to build at least…