CEB Control Source Code v1.02

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// State Machine for CEB Press // Open Source Ecology / Factor-E Farm // Benjamin Gatti - 10-5-2009 // This code is provided free to use and modify under the GPL

// Constants Defined int State = 0; float TFactor = .6; boolean Run = 1; int BaseTime = 4000 ; // Defi	nition of base time scalar for all cylinder motion // End of Constants Defined

// Definition of Positions and Sequence Timing // Get rid of all times, just scale BaseTime // int TD = 3000; // int TL = 250; // int TC = 660; // int TP = 5000; // int TR = 120; // int TO = 2000; // int TU = 600; int TE = 500; // End of Definition of Positions and Sequence Timing
 * 1) define STATEMIN 1
 * 2) define STATEDOWN 1 //Drop the press all the way down
 * 1) define STATELOAD 2 //Wait/Jiggle for chamber to fill
 * 1) define STATECLOSE 3 //Move Drawer to closed position - (Move for TC millis)
 * 1) define STATEPRESS 4  //Raise the press
 * 1) define STATERELEASE 5  //Drop the Press slightly (TR millis)
 * 1) define STATEOUT 6  //Move Drawer to open position - fully Out
 * 1) define STATEUP 7  //Raise the press all the way Up - lifting the Brick above the eject trough
 * 1) define STATEEJECT 8  //Move Drawer - full In
 * 1) define STATEMAX STATEEJECT

// Definition of Output Pin Assignment on Arduino int solPressUp = 5; int solPressDown = 6; int solDrawerIn = 10; int solDrawerOut = 11; int Timer = 0; //clock for current state int ledPin = 13;               // LED connected to digital pin 13 // End of Definition of Output Pin Assignment on Arduino

// Setup void setup                   // run once, when the sketch starts { shutdown; pinMode(ledPin, OUTPUT);     // sets the digital pin as output // Definition of pins (5, 6 and 10, 11) in easy to read format: pinMode(solPressUp, OUTPUT);     // sets the digital pin as output pinMode(solPressDown, OUTPUT);     // sets the digital pin as output pinMode(solDrawerIn, OUTPUT);     // sets the digital pin as output pinMode(solDrawerOut, OUTPUT);     // sets the digital pin as output

Run = 1; Serial.begin (19200); Serial.println("Started"); State = STATEMIN; shutdown; Timer = 100; } // End Setup

// Shutdown void shutdown{ digitalWrite(solPressUp,LOW); digitalWrite(solPressDown,LOW); digitalWrite(solDrawerIn,LOW); // In defined as contraction of 14” cylinder digitalWrite(solDrawerOut,LOW); // Out defined as expansion of 14” cylinder } //End Shutdown

// Actual Pressing Steps void Transition { shutdown; // Serial.writeln (State,DEC) //Starting position is main cylinder up and drawer cylinder extended all the way. switch (State)   { case STATEDOWN: //Drop the press all the way down { //    Timer = TD * Tfactor; Timer = (BaseTime / 1.3) * Tfactor; digitalWrite(solPressDown,HIGH); Serial.println("Down"); break; } case STATELOAD: //Wait/Jiggle for chamber to fill {     //     Timer = TL * Tfactor; Timer = 0; // Chamber loadedduring STATEDOWN already Serial.println("Load"); break; } case STATECLOSE:  //Move Drawer to closed position - (Move for TC millis) {     // Timer = TC * Tfactor; Timer = (((BaseTime / 5.55)) / 2) / 3.6; // Close small cylinder 7 inches, at ½ flow digitalWrite(solDrawerIn,HIGH); // In is defined as contraction of drawer cylinder Serial.println("Close"); break; } case STATEPRESS: //Raise the press {     // Timer = TP * Tfactor; Timer = BaseTime * 0.55; // Extend half way plus a little digitalWrite(solPressUp,HIGH); Serial.println("Press"); break; } case STATERELEASE: //Drop the Press slightly (TR millis) {     // Timer = TR * Tfactor; Timer = BaseTime * 0.05; digitalWrite(solPressDown,HIGH); Serial.println("Release"); break; } case STATEOUT:   //Move Drawer to open position - fully Out (cylinder contracted) {     // Timer = TO * Tfactor; Timer = (((BaseTime / 5.55)) / 2) / 3.6) + (BaseTime * 0.01); // Close small cylinder fully      // digitalWrite(solDrawerOut,HIGH);       digitalWrite(solDrawerIn,HIGH); // Need to contract drawer cylinder      Serial.println("Out");      break;    }  case STATEUP:  //Raise the press all the way Up - lifting the Brick above the eject trough    {      // Timer = TU * Tfactor;      Timer = BaseTime * 0.55;      digitalWrite(solPressUp,HIGH);      Serial.println("Up");      break;    }  case STATEEJECT:   //Move Drawer - full extension    {      //Timer = TE * Tfactor;      Timer = BaseTime / 5.55      digitalWrite(solDrawerIn,HIGH);      Serial.println("Eject");      break;    }  default:    Run =0;    Serial.println("Error on State Case Shut Down");    break;  } } // End Actual Pressing Steps

void loop                    // run over and over again { if(Run==1) {   if (Timer>0){ delay(1); Timer--; }   else {     State++; if (State > STATEMAX) { State=STATEMIN; }     Transition; } }  else {   digitalWrite(solPressUp,LOW); digitalWrite(solPressDown,LOW); digitalWrite(solDrawerIn,LOW); digitalWrite(solDrawerOut,LOW); }

// digitalWrite(ledPin, HIGH);   // sets the LED on  //  digitalWrite(Chnl0, HIGH);   // sets the LED on  //  delay(500);                  // waits for a second // digitalWrite(ledPin, LOW);   // sets the LED on  //  digitalWrite(Chnl0, LOW);   // sets the LED on  //  delay(500);                  // waits for a second

}