Phanh tay Sim Racing – Load Cell

This project is a remix of the mentioned potentiometer-based sim racing handbrake, upgraded to use a load cell for force-based measurement instead of position-based input.

The result is a much more realistic handbrake feel, similar to real hydraulic handbrakes used in motorsport.

• Compatible with Arduino Uno using UnoJoy

• Adjustable stiffness depending on spring and preload

• Uses mostly 3D-printed parts

Hardware used:

• Load cell (typically 10–50 kg (https://www.sparkfun.com/load-cell-10kg-straight-bar-tal220.html#content-features))

• HX711 load cell amplifier

• Springs (user preference)

• 2xM4x18 bolts

• 6xM5x18 bolts + 4xM5 nut

• 3xM5x70 bolts + 3xM5 nut

• 3xM8x30 bolts + 3xM8 nut

• M8x70 bolt + M8 nut

• Arduino with USB cable

Firmware:

• Arduino Uno flashed with UnoJoy (see unojoy instructions: https://github.com/AlanChatham/UnoJoy)

Calibration:

• Windows Game Controller settings

• In-game control settings

• Tested with Assetto Corsa

Disclaimer:

This is a DIY project. Assembly and use are at your own risk. Ensure proper wiring and secure mounting before use.