arduino_brain_arm.ino

#include <Brain.h>
#include <Servo.h> 
#include <SimpleTimer.h> // Source code here: http://playground.arduino.cc/Code/SimpleTimer

Brain brain(Serial);

const int greenPin = 2;
const int yellowPin = 4;
const int redPin = 7;
long interval = 500; 
long previousMillis = 0;
int ledState = LOW; 
int attValue;

////////////////////////////////////////////
int servoPin = 10;
 
Servo servo;  

////////////////////////////////////////////
// the timer object
SimpleTimer timer;
 
int angle = 0;   // servo position in degrees 

bool movingArm = false;
bool positiveBrainSignal = false;

void checkAndMoveArm() {
   if (movingArm) return; 
   if (!positiveBrainSignal) return; 

   movingArm = true;
   // scan from 0 to 180 degrees
   for(angle = 0; angle < 180; angle++)  
   {                                  
      servo.write(angle);               
      delay(15);                   
   } 

   // now scan back from 180 to 0 degrees
   for(angle = 180; angle > 0; angle--)    
   {                                
      servo.write(angle);           
      delay(15);       
   } 
   movingArm = false;
}

void setup() {
   // Set up the LED pin.
   pinMode(greenPin, OUTPUT);
   pinMode(yellowPin, OUTPUT);
   pinMode(redPin, OUTPUT);

   // Start the hardware serial.
   Serial.begin(9600);

   // Init servo
   servo.attach(servoPin); 

   // Start arm timer (100 ms scan interval)
   timer.setInterval(100, checkAndMoveArm);
}

void loop() {
   // Expect packets about once per second.
   if (brain.update()) {
      Serial.println(brain.readCSV());

      // Attention runs from 0 to 100.
      attValue = brain.readAttention();
   }

   // Make sure we have a signal.
   if(brain.readSignalQuality() == 0) {

      // Light up the green LED
      if (attValue < 50) {
         digitalWrite( greenPin, HIGH);
         digitalWrite( yellowPin, LOW);
         digitalWrite( redPin, LOW);
         positiveBrainSignal = true;
      }
      //Light up the red LED
      else if (attValue >70)
      {
         digitalWrite( redPin, HIGH);
         digitalWrite( greenPin, LOW);
         digitalWrite( yellowPin, LOW);
         positiveBrainSignal = false;
      }
      //Light up the Yellow LED
      else if (attValue < 70 and attValue > 50)
      {
         digitalWrite( yellowPin, HIGH);
         digitalWrite( greenPin, LOW);
         digitalWrite( redPin, LOW);
         positiveBrainSignal = false;
      } 
   }
}