For HackUMass XIII, we designed a custom machined pedal set featuring a clutch, brake, and accelerator. The design goals were being mountable to a racing rig and having our device show up as a Human Interface Device game controller for racing games to take in pedal input.
Most of our design time was spent in the M5 ECE Makerspace's Machine Shop building the pedal functionalilty. The pedals feature bearings that were set into aluminum blocks, allowing them to move up and down. The pedals are connected to a stationary rod that is clamped on either side to prevent spinning.