Adventures in newer (optical) pc steering wheel hacking
The Steering Wheel Optical Encoder of 60 Slot for G25 / G27 Old Version Driving Force GT Steering Wheels Systems Spare|Replacement Parts & Accessories| - AliExpress
60 Slot Steering Wheel Optical Encoder For Logitech G25 old G27(60 Slot) Driving Force GT (DFGT) Racing Car Game|Board Games| - AliExpress
30 Slot Steering Wheel Optical Encoder for New Logitech G27 / - Etsy
Spread the Word - G25/G27 optical encoder by TheAnimaster on DeviantArt