Simracing hydraulic handbrake

thingiverse

This design enables users to interface a hydraulic handbrake with a computer and utilize it as an analog input for most sim-racing games. The files are specifically designed for the [LZONE-RACING Aluminum Universal Hydraulic Handbrake Lever Drift E-Brake Racing NEW JR3654](https://www.aliexpress.com/item/LZONE-RACING-Aluminum-Universal-Hydraulic-Handbrake-Lever-Drift-E-Brake-Racing-NEW-JR3654/32789759941.html) handbrake, but the concept can likely be adapted to most hydraulic handbrakes. To print the files correctly, turn them upside-down. The mount requires support, whereas the other files do not. In addition to the handbrake and 3D-printed files, a standard 10Kohm potentiometer and an Arduino Pro Micro are required. I also printed a [case](https://www.thingiverse.com/thing:320421) to mount the Pro Micro. To program the Pro Micro as a game-input device, use the standard Arduino joystick.h library. Connect the potentiometer to the analog-input configured in the Arduino and assemble the parts as shown. When the handbrake is pulled, the potentiometer will rotate, and the Arduino sends the input to the computer. The handbrake may need to be calibrated in Windows before use. It works flawlessly, but I might add a stiffer spring or something to achieve a more realistic mechanical feel.