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Introduction
====================
This is how you can add a loadcell to your T3PA pedals and thus improve the brake fell in your favorite racing simulation.
Requirements
====================
What you need:
- Thrustmaster T3PA pedals
- Aruduino 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.9042311.0.0.27424c4duXF5Gx)
- some cables
- 2xM5x12 bolts
- 1xM5 nut
Instructions:
====================
0. Remove the conical brake mod from your T3PA pedals
1. Print the brakeMod_part2.stl (loadcell holder)
2. Mount the loadcell to the printed loadcell holder using the two M5 bolts
3. Insert the M5 nut into the loadcell holder
4. Mount the loadcell holder to your T3PA pedals using the original M5 bolt from the conical brake mod
5. Attach conical rubber to loadcell
_Option 1_:
Cut out a piece of aluminum/stell where you can mount the conical rubber on and screw it onto the loadcell, see images.
_Option 2_:
Drill a 8mm hole throuh the inner M4 hole and cut a M10 threat through that hole. Screw the conical rubber directly to the loadcell. You may also want to use the circlip, which you find as a stl file. To mount the circlip, screw out the conical rubber and slide the circlip onto the conical rubber thread.
6. mount the arduino to the T3PA pedals
7. Cut the circuit path like shown in one of the images. This will increase the readout rate from the loadcell from 10Hz to 80Hz
8. Connect the loadcell to the breadboard
9. Connect the breadboard vcc --> arduino vcc
10. Connect the breadboard gnd --> Arduino gnd
11. Connect the breadboard DAT:
_Option 1_: If you have an Arduino (Pro) Micro, breadboard DAT --> Arduino 2
_Option 2_: If you have an Arduino Due, breadboard DAT --> Arduino A7
11. Connect the breadboard CLK:
_Option 1_: If you have an Arduino (Pro) Micro, breadboard DAT --> Arduino 3
_Option 2_: If you have an Arduino Due, breadboard DAT --> Arduino A8
12. Open the attached arduino file
13. 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. This will decrease the low pass filter order and thus make it faster.
14. Connect the ardui
