Simracing hydraulic handbrake

thingiverse

This design makes it possible to connect a hydraulic handbrake to a computer, and use it as an analog input to most sim-racing games. The files are designed specifically for [this](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 probably be adapted to most hydraulic handbrakes. Turn the files upside-down before printing. The mount needs support, the other files do not. In addition to the handbrake and 3d-printed files, you will need a standard 10Kohm potentiometer and an arduino pro micro. I also printed a [case](https://www.thingiverse.com/thing:320421) to mount the pro micro. Use the standard arduino joystick.h library to program the pro micro as a game-input device. Connect the potentiometer to the analog-input configured in the arduino and mount the parts as pictured. When the handbrake is pulled the potentiometer will turn, and the arduino sends the input to the computer. The handbrake probably needs to be calibrated in windows before use. It works perfectly, but i will probably add a stiffer spring or something to get a more realistic mechanical feeling.