Thrustmaster T3PA DIY Loadcell mod (T300, T500) < 10$

thingiverse

<iframe width="560" height="315" src="https://www.youtube.com/embed/7J9-i1W0CII" frameborder="0" allow="autoplay; encrypted-media" allowfullscreen></iframe> Introduction ==================== Here's how you can add a loadcell to your T3PA pedals and thus improve the brake feel in your favorite racing simulation. Requirements ==================== What you need: - Thrustmaster T3PA pedals - Arduino Pro Micro (~4$) (Arduino Micro, Due or Leonardo should also be possible) [link](https://de.aliexpress.com/item/Pro-Micro-ATmega32U4-5V-16MHz-Replace-ATmega328-For-Arduino-Pro-Mini-With-2-Row-Pin-Header/32808519179.html?spm=a2g0s.9042311.0.0.4aff4c4d47Hqr2) - Loadcell (~2$) [link](https://de.aliexpress.com/item/WAVGAT-Digital-Load-Cell-Weight-Sensor-20KG-Portable-Electronic-Kitchen-Scale-HX711-Weighing-Sensors-Ad-Module/32848782741.html?spm=a2g0s.9042311.0.0.27424c4dU5Wlor) - HX711 breadbord with adjustable framerate (~2$) [link](https://de.aliexpress.com/item/HX711-W-gesensoren-24-bit-A-D-Conversion-Adapter-W-gezelle-Verst-rkerplatine-Gewicht-Sensoren/32848866947.html?spm=a2g0s.9042311.0.0.4aff4c4d47Hqr2) - Loadcell rubber contraption (holder + rubber) Steps ==================== 1. Install the HX711_ADC library [link](https://github.com/olkal/HX711_ADC) and modfy it's "HX711_ADC.h", so that the value of "SAMPLES" is set to 4. 2. Flash the arduino with the attached file, depending on your microcontroller type (Arduino Pro Micro or Arduino Due). 3. Connect the arduino via native USB port. 4. Loadcell calibration * If you have an Arduino Pro Micro, open the Arduino IDE and connect the Arduino to the PC. Open "Serial monitor" and type "calibrate", hit send. * During the next 10 seconds, hit the pedal multiple times. The arduino will read the Loadcell and automatically adjust the Loadcell readings and map it correctly. 5. Install the Arduino joystick Library [link](https://github.com/MHeironimus/ArduinoJoystickLibrary) 6. Open your racing simulation and adjust your controller settings to use the value from the arduino instead of the brake signal from the T3PA. Edit 08.10.2018: Attached the "BrakerBumper1.stl" file, which you can use instead of the original rubber cone. It gives a much softer brake feel, similar to that in my private vehicle. Print with TPU with 4 perimeters, 15% infill, no top & bottom layer as seen in the images to achieve best possible braking feel. Note: I also attached files for a loadcell rubber contraption (holder + rubber). Tested the rubber printed it TPU, but it was not soft enough. In case somebody has softer filament, please tell me!