DIY Driving Simulator

I found a commercial grade one in an old helicopter remote, but if you don't want to buy one, the next step tells you how to build your own one.
For the sake of people who are going to build their own one, I built my simulator sensor with one commercial sensor and one homemade sensor (you need 2 total)

This step shows you how to create a perfectly working gravity sensing potentiometer from household parts
Get a potentiometer
Get a heavy and small ball
File down one side of the ball
Glue the knob onto the potentiometer
Glue the flat side of the ball onto the knob-make sure it is directly in the center of the knob
Glue a nut to the ball to add weight

I found an old light up Frisbee but it did not have the ability to switch on and off the light, plus it came with pesky button cell batteries.
This step solves that problem by rewiring the Frisbee to have external battery power and a switch to turn the internal light on and off.
Connect wire to the positive and negative ends of the Frisbee circuit.
Wire up a switch and connect it between the battery and the circuit.
Glue everything down.

Bring out the legos!
12x8 box with 3x6 hole and 6x6 hole
these are used for up, down, left, and right sensor movement
The box should be 5 high
You can then fill in spaces so that the sensor is more compacted and directionally limited
Make sure to include holes for wires to come out

Attach longer wires to everything so that you can use the wheel from a distance
Glue the sensors to plates and pack them into the holes in the Lego casing
Then attach Velcro to the underside and to the back of the "wheel"

You can make your own "shield" using one of these two methods:
1: get some PCB and some pins and solder them to the board and solder on wires

2: get some pins and glue them or use silicon to fasten them to a plate. Make sure the pins line up with the diagram in the next step
Let the silicon dry for a day

I used cut safety pins and they worked well in the end 
I used hot glue, then super glue, then silicon to match the strength of soldering

Do NOT mess up on this diagram. Make sure everything is correct before proceeding and plugging in the arduino.
Potentiometer 1 right goes to GND
                              middle goes to Analog 5
                              left goes to pin 4
Potentiometer 2 right goes to GND
                              middle goes to Analog 0
                              left goes to pin 8

Arduino Code:


void setup(){
  Serial.begin(9600); 
  pinMode(4,OUTPUT);
  pinMode(8,OUTPUT);
}
void loop(){
  digitalWrite(4,HIGH);
  int d=analogRead(A5);
  digitalWrite(4,LOW);
  digitalWrite(8,HIGH);
  int r=analogRead(A0);
  digitalWrite(8,LOW);
  int minimum=400;
  int maximum=800;
 
  Serial.println(d);
  Serial.println(r);
 
  //foreward tilt
  if(d>maximum){
    Serial.println('0');
  }
  else{
    Serial.println('1');
  }
  delay(12.5);
 
 
  //backwards tilt
  if(d<minimum){
    Serial.println('2');
  }
  else{
    Serial.println('3');
  }
  delay(12.5);
 
  //left tilt
  if(r<minimum){
    Serial.println('4');
  }
  else{
    Serial.println('5');
  }
  delay(12.5);
 
  //right tilt
  if(r>maximum){
    Serial.println('6');
  }
  else{
    Serial.println('7');
  }
 
  delay(12.5);
 
 
 
}

Python Code:


import serial
import codecs
import ctypes
import time
from time import sleep

SendInput = ctypes.windll.user32.SendInput

PUL = ctypes.POINTER(ctypes.c_ulong)
class KeyBdInput(ctypes.Structure):
    _fields_ = [("wVk", ctypes.c_ushort),
                ("wScan", ctypes.c_ushort),
                ("dwFlags", ctypes.c_ulong),
                ("time", ctypes.c_ulong),
                ("dwExtraInfo", PUL)]

class HardwareInput(ctypes.Structure):
    _fields_ = [("uMsg", ctypes.c_ulong),
                ("wParamL", ctypes.c_short),
                ("wParamH", ctypes.c_ushort)]

class MouseInput(ctypes.Structure):
    _fields_ = [("dx", ctypes.c_long),
                ("dy", ctypes.c_long),
                ("mouseData", ctypes.c_ulong),
                ("dwFlags", ctypes.c_ulong),
                ("time",ctypes.c_ulong),
                ("dwExtraInfo", PUL)]

class Input_I(ctypes.Union):
    _fields_ = [("ki", KeyBdInput),
                 ("mi", MouseInput),
                 ("hi", HardwareInput)]

class Input(ctypes.Structure):
    _fields_ = [("type", ctypes.c_ulong),
                ("ii", Input_I)]

def PressKey(hexKeyCode):

    extra = ctypes.c_ulong(0)
    ii_ = Input_I()
    ii_.ki = KeyBdInput( hexKeyCode, 0x48, 0, 0, ctypes.pointer(extra) )
    x = Input( ctypes.c_ulong(1), ii_ )
    ctypes.windll.user32.SendInput(1, ctypes.pointer(x), ctypes.sizeof(x))

def ReleaseKey(hexKeyCode):

    extra = ctypes.c_ulong(0)
    ii_ = Input_I()
    ii_.ki = KeyBdInput( hexKeyCode, 0x48, 0x0002, 0, ctypes.pointer(extra) )
    x = Input( ctypes.c_ulong(1), ii_ )
    ctypes.windll.user32.SendInput(1, ctypes.pointer(x), ctypes.sizeof(x))


def PressW():
    PressKey(0x57) #W

def ReleaseW():
    ReleaseKey(0x57) #W

def PressA():
    PressKey(0x41) #A

def ReleaseA():
    ReleaseKey(0x41) #A

def PressS():
    PressKey(0x53) #S

def ReleaseS():
    ReleaseKey(0x53) #S

def PressD():
    PressKey(0x44) #D

def ReleaseD():
    ReleaseKey(0x44) #D


port = "COM6"
ser = serial.Serial(port, 9600, timeout=0)

while True:
    #data = ser.read(9999)
    line = ser.readline()
    if line:
        print( 'Got:', line)

    if line==b'0\r\n':
        print('W_UP')
        PressW()
    elif line==b'1\r\n':
        print('W_DOWN')
        ReleaseW()

       
    if line==b'2\r\n':
        print('S_UP')
        PressS()
    elif line==b'3\r\n':
        print('S_DOWN')
        ReleaseS()

       
    if line==b'4\r\n':
        print('A_UP')
        PressA()
    elif line==b'5\r\n':
        print('A_DOWN')
        ReleaseA()


    if line==b'6\r\n':
        print('D_UP')
        PressD()
    elif line==b'7\r\n':
        print('D_DOWN')
        ReleaseD()

       
    sleep(0.0125)
    print('0')

ser.close()

Now you can either download my game from here or you can modify the python code to work for any other game!
If you have any questions about modifying the code for another game, message me or ask in the comments!