I made a new thing this weekend...
For folks who've followed my "homemade controller" thread, the design is somewhat similar in that digital potentiometers are used to send the analog signal to the 5200. Interfacing to the PS2 controller is fairly simple from a microcontroller, so it's a simple matter of a loop that repeatedly queries the thumbstick positions and fire button status from the PS2 controller, and then sets the digital pots accordingly.
So far just the video is up, blog post to follow later with schematics, github link, etc.
Edited by smbaker, Sat Sep 22, 2018 11:34 PM.