Floating City

receiver

int readValue;
const int buttonPin = 4;
const int buttonPin2 = 5;


void setup()
{
  pinMode(12, OUTPUT); 
  pinMode(9, OUTPUT); 

  digitalWrite(9,HIGH);

  pinMode(10, OUTPUT);

  pinMode(4,INPUT);
  pinMode(5,INPUT);
  Serial.begin(9600);
}       
void loop()
{
  readValue = Serial.read(); 
  if (Serial.available()>0)
  {
    Serial.println(readValue);

    //  ===================
    digitalWrite(12, LOW);
    digitalWrite(9, LOW);


    digitalWrite(13,LOW);
    digitalWrite(9, LOW);

    if(readValue == 'L')
    {
      analogWrite(11,255);
      analogWrite(3,0);

    }
    else if(readValue == 'R')
    {
      analogWrite(11,0);
      analogWrite(3,255);
    }

    else if(readValue == 'G')
    {
      analogWrite(11,255);
      analogWrite(3,255); 
    }
    else if(readValue =='S')
    {
      analogWrite(11,0);
      analogWrite(3,0); 
    }
    else
    {
      analogWrite(11,0);
      analogWrite(3,0); 
    }
  }
  else
  {
    Serial.println("no signal");
  }
}

send

const int buttonPin = 4;
const int buttonPin2 = 5;

int buttonState = 0;
int buttonState2 = 0;

void setup() { 
  pinMode(buttonPin,INPUT);
  Serial.begin (9600);
} 

void loop() { 
  buttonState = digitalRead(buttonPin);
  buttonState2 = digitalRead(buttonPin2);
  if (buttonState == 1)
  {
    if(buttonState2 == 1)
    {
      Serial.print('G');
    }
    else
    {
      Serial.print('L');
    }
  }
  else if(buttonState2 == 1)
  {
    if (buttonState == 1)
    {
      Serial.print('G');
    }
    else
    {
      Serial.print('R');
    }
  }
  else
  {
    Serial.print('S');
  }
}

target

#define PIN 6
#include <Adafruit_NeoPixel.h>
Adafruit_NeoPixel strip = Adafruit_NeoPixel(60, PIN, NEO_GRB + NEO_KHZ800);

const int pingPin = 7;
int ledPin = 6;
//-------denoise----------------
int denoise[10];
int temp = 0;
//========================denoise
void setup()
{
  Serial.begin(9600);
  strip.begin();
  strip.show();
}

void loop()
{
  //--------ping--------

  pinMode(ledPin, OUTPUT);
  long duration, distance;

  pinMode(pingPin, OUTPUT);
  digitalWrite(pingPin, LOW);
  delayMicroseconds(2);
  digitalWrite(pingPin, HIGH);
  delayMicroseconds(5);
  digitalWrite(pingPin, LOW);

  pinMode(pingPin, INPUT);
  duration = pulseIn(pingPin, HIGH);
  distance = microsecondsToCentimeters(duration);


  Serial.print(distance);
  Serial.print("cm");
  colorWipe(strip.Color(0, 0, 255), 10);
  //-----denoise  
  for(int i = 0; i < 10; i++)
  {
    denoise[i] = distance;
  }

  for(int i = 0; i < 10 ; i++)
  {
    for(int j = 0; j< 10 - i; j++)
    {
      if(denoise[i] > denoise[i+1])
      {
        temp = denoise[i];
        denoise[i] = denoise[i+1];
        denoise[i+1] = temp;
      }
    }
  }

  distance = (denoise[4] + denoise[5]) / 2;
  //============denoise




  if (distance<= 80)
  {
    rainbow(0);
  }
  else
  {
    digitalWrite(6, LOW);
  }
}  
void colorWipe(uint32_t c, uint8_t wait) {
  for(uint16_t i=0; i<strip.numPixels(); i++) {
    strip.setPixelColor(i, c);
    strip.show();
    delay(wait);
  }
}

void rainbow(uint8_t wait) {
  float i, j;

  for(j=0; j<256; j++) {
    for(i=0; i<strip.numPixels(); i += 0.5) {
      strip.setPixelColor(i, Wheel(i+j));
    }
    strip.show();
  }
}  

long microsecondsToCentimeters(long microseconds)
{
  return microseconds / 29 / 2;  
}

uint32_t Wheel(float WheelPos) {
  WheelPos = 255 - WheelPos;
  if(WheelPos < 85) {
    return strip.Color(255 - WheelPos * 3, 0, WheelPos * 3);
  } 
  else if(WheelPos < 170) {
    WheelPos -= 85;
    return strip.Color(0, WheelPos * 3, 255 - WheelPos * 3);
  } 
  else {
    WheelPos -= 170;
    return strip.Color(WheelPos * 3, 255 - WheelPos * 3, 0);
  }
}