DIY Rudder Pedals for Flight Simulator

1#include <SPI.h>  
2
3#define CS_RUDDER 10 
4#define CS_LEFT 8 
5#define  CS_RIGHT 9 
6#define SENSOR_LEFT_PEDAL A6
7#define SENSOR_RIGHT_PEDAL A5
8#define  SENSOR_RUDDER_LEFT A0
9#define SENSOR_RUDDER_RIGHT A1
10
11int val_left, val_right,  remap_left, remap_right, rudder,
12    val_brake_left, val_brake_right, remap_brake_left,  remap_brake_right;
13
14int tuning_rudder = 128;
15// int tuning_left_brake =  255;
16// int tuning_right_brake = 255;
17
18void setup() {
19  Serial.begin(9600);
20  SPI.begin();    
21  pinMode (CS_RUDDER, OUTPUT);   
22  pinMode (CS_LEFT, OUTPUT);   
23  pinMode (CS_RIGHT, OUTPUT);  
24}
25
26void loop() {
27 
28  // --------------------------------------------------------
29  // RUDDER PEDALS          -128 --- x --- 128
30  // --------------------------------------------------------
31
32  // Read and remap sensor RUDDER LEFT 
33  val_left = analogRead(SENSOR_RUDDER_LEFT);
34  if (val_left <= 950) { 
35    remap_left = map(val_left, 30, 870, -128, 0); //  -40
36  }
37  else remap_left = 0;
38  // Set limitations RUDDER LEFT 
39  if  (remap_left > 0) remap_left = 0;
40  if (remap_left <= -128) remap_left = -128;  
41
42  // Read and remap sensor RUDDER RIGHT   
43  val_right = analogRead(SENSOR_RUDDER_RIGHT);
44  if (val_right <= 950) {
45    remap_right = map(val_right, 0, 820, 132, 0); //  -50
46  }
47  else remap_right = 0;  
48  //Set limitations RUDDER RIGHT   
49  if (remap_right < 0) remap_right = 0;
50  if (remap_right >= 127) remap_right  = 127;  
51  
52  rudder = remap_left + remap_right;
53  
54
55   if (remap_left  == 0) {
56      tuning_rudder = tuning_rudder + 128;
57   }
58   else {
59      tuning_rudder  = abs(tuning_rudder - 128);
60   }
61
62  // --------------------------------------------------------
63  // BRAKING
64  // --------------------------------------------------------  
65
66  val_brake_left = analogRead(SENSOR_LEFT_PEDAL);
67
68  if (val_brake_left <=  328) {
69    remap_brake_left = map(val_brake_left, 200, 328, 0, 255);
70  }
71  else remap_brake_left = 255; 
72  if (remap_brake_left < 0) remap_brake_left  = 0;
73
74  val_brake_right = analogRead(SENSOR_RIGHT_PEDAL);  
75  if (val_brake_right  <= 328) {
76    remap_brake_right = map(val_brake_right, 200, 328, 0, 255);
77  }
78  else remap_brake_right = 255; 
79  if (remap_brake_right < 0) remap_brake_right  = 0;  
80
81/* 
82  // ARDUINO SETUP
83
84  // Neutral sensors setup
85  Serial.print(val_left);  
86  Serial.print(" | " );     
87  Serial.println(val_right);
88  delay(400);
89
90  // Output setup
91  Serial.print(remap_brake_left); 
92  Serial.print(" | "  ); 
93  Serial.println(remap_brake_right); 
94  Serial.print(" | " );   
95  Serial.print(rudder); 
96  Serial.print(" | " );     
97  Serial.println(tuning_rudder);
98  delay(400);
99*/
100
101  // --------------------------------------------------------
102  // SEND DATA TO digiPOTs
103  // --------------------------------------------------------  
104
105    digitalWrite(CS_RUDDER, LOW); 
106    SPI.transfer(0b00010001);   
107    SPI.transfer(tuning_rudder);          
108    digitalWrite(CS_RUDDER, HIGH);
109    delay(5); // Delay for data time smoothing
110    
111    digitalWrite(CS_LEFT,  LOW); 
112    SPI.transfer(0b00010001);   
113    SPI.transfer(remap_brake_left);          
114    digitalWrite(CS_LEFT, HIGH);
115    delay(5);
116
117    digitalWrite(CS_RIGHT,  LOW); 
118    SPI.transfer(0b00010001);   
119    SPI.transfer(remap_brake_right);          
120    digitalWrite(CS_RIGHT, HIGH);
121    delay(5);
122}