This is a gear shift indicator for vehicles using an arduino nano and seven segments led
you can improve these prototype and integrated on the dash board
[code]
int a=6;
int b= 7;
int c= 8;
int d=9;
int e=10;
int f=11;
int g=12;
#define gear1 A6
#define gear2 A7
#define gear3 5
#define gear4 4
#define gear5 2
#define rever 3
void setup() {
Serial.begin(9600);
pinMode(gear1,INPUT);
pinMode(gear2,INPUT);
pinMode(gear4,INPUT);
pinMode(gear4,INPUT);
pinMode(gear5,INPUT);
pinMode(rever,INPUT);
pinMode(a,OUTPUT);
pinMode(b,OUTPUT);
pinMode(c,OUTPUT);
pinMode(d,OUTPUT);
pinMode(e,OUTPUT);
pinMode(f,OUTPUT);
pinMode(g,OUTPUT);
}
void loop() {
int g1 =analogRead(gear1);
int g2 =analogRead(gear2);
int g3= digitalRead(gear3);
int g4= digitalRead(gear4);
int g5= digitalRead(gear5);
int r= digitalRead(rever);
if (g1<100)
{limpia();
primera();}
else if (g2<100)
{limpia();
segunda();}
else if (g3==LOW)
{limpia();
tercera();}
else if (g4==LOW)
{limpia();
cuarta();}
else if (g5==LOW)
{limpia();
quinta();}
else if (r==LOW)
{limpia();
reversa();}
else {limpia();
neutral();
}
//delay(10);
}
void neutral(){
digitalWrite(c,HIGH);
digitalWrite(e,HIGH);
digitalWrite(g,HIGH);
}
void reversa(){
digitalWrite(c,LOW);
digitalWrite(e,HIGH);
digitalWrite(g,HIGH);
}
void primera(){
digitalWrite(c,HIGH);
digitalWrite(b,HIGH);
}
void segunda(){
digitalWrite(a,HIGH);
digitalWrite(b,HIGH);
digitalWrite(d,HIGH);
digitalWrite(e,HIGH);
digitalWrite(g,HIGH);
}
void tercera(){
digitalWrite(a,HIGH);
digitalWrite(b,HIGH);
digitalWrite(c,HIGH);
digitalWrite(d,HIGH);
digitalWrite(g,HIGH);
}
void cuarta(){
digitalWrite(b,HIGH);
digitalWrite(c,HIGH);
digitalWrite(f,HIGH);
digitalWrite(g,HIGH);
}
void quinta(){
digitalWrite(a,HIGH);
digitalWrite(c,HIGH);
digitalWrite(d,HIGH);
digitalWrite(f,HIGH);
digitalWrite(g,HIGH);
}
void limpia(){
digitalWrite(a,LOW);
digitalWrite(b,LOW);
digitalWrite(c,LOW);
digitalWrite(d,LOW);
digitalWrite(e,LOW);
digitalWrite(f,LOW);
digitalWrite(g,LOW);
}
[/code]
