A DIY USB gear stick for PC racing games | Arduino Blog
Free STL file Open Sim Shifter H - DIY・3D printer model to download・Cults
Steam Community :: Guide :: DIY H-Shifter
Amazon.com: Obokidly DIY Sequential Shifter Knob mod Upgrade Modification Steering Wheels Accessories Parts Set for Logitech Shifter Gear Shift Knob for G29/G25/G27 for PXN A10 Compatible with PC for ATS & ETS2
DIY Gated H-Pattern 6-Speed Sim Shifter (Details, 3D printing files and donation link in comments) : r/simracing