ASRO_test_rocket_driver_codes.ino

//electric cycle engine for test in conjuction with gas generator.....pump to force kerosene through heat exchange......releies on good batteries...simplifies plumbing....
/*#define takeoff;//define a function to be called at takeoff
#define landing;//define a function to be called at landing*/
#include <NMEAGPS.h>//include neo gps library to guide rocket during landing
#include <Servo.h>
Servo  extractionvalve, refillingvalve, mainoxygenvalve, mainkerosenevalve, chamberoxygenvalve, chamberkerosenevalve, Xaxis, Yaxis, gas; //declare servo types
const int startermotorrelay2 = 14; //set startermotorrelay2 to pin 13(power starter motor with internal-on board battery power)
const int sparkplug2 = 15;//lights up combustion engine
const int parachuterelay = 16;//lights up explosive bolts to eject parachute
const int leglock = 16;
const int conelock = 18;

void setup() {

  //----------------------------------------------------------
  // set up relays,solenoid locks as outputs:
  pinMode(startermotorrelay2, OUTPUT);
  pinMode(sparkplug2, OUTPUT);
  pinMode(parachuterelay, OUTPUT);
  pinMode(leglock, OUTPUT);

  //------------------------------------------------------
  //lock up everything
  digitalWrite(conelock, LOW); //setting lock off closes it,setting it on opens it(two locks powered by one relay or transistor)
  digitalWrite(leglock, LOW); //Close leg clamps(three locks powered by one relay or transistor)
  //------------------------------------------------------


  //set up all valves
  //attach servo valves to PWM pins OF MEGA
  extractionvalve.attach(15);
  refillingvalve.attach(16);
  mainoxygenvalve.attach(17);
  mainkerosenevalve.attach(18);
  chamberoxygenvalve.attach(21);
  chamberkerosenevalve.attach(22);
  Xaxis.attach(26);
  Yaxis.attach(27);
  gas.attach(25);
  //--------------------------------------------------------------
  //close all valves for safety
  //-------------------------------------------------------
  refillingvalve.write(0);//close oxygen  refilling valve at the start before powering rocket
  mainoxygenvalve.write(0);//fully close main oxygen valve
  mainkerosenevalve.write(0);//fully close main kerosene valve
  chamberoxygenvalve.write(0);//fully close chamber oxygenvalve
  chamberkerosenevalve.write(0);//fully close chamber kerosene valve
  gas.write(0);//close leg gas cylinder
}

void loop() {
  if (Serial.available() > 0) {
    char data = Serial.read();
    switch (data) {
      case '1'://case for takeoff
        //turbine engine start
        //************************************************************************************************************************************************************
        extractionvalve.write(20);//open exraction valve a bit to replalce outgoing kerosene,enabling rocket to function efficiently
        mainoxygenvalve.write(90);//fully open main oxygen valve
        mainkerosenevalve.write(90);//fully open main kerosene valve

        digitalWrite(startermotorrelay2, HIGH); //turn on starter motor with relay that routes power from launch pad into the motor to spin turbine
        delay(5000);//delay 5 seconds for turbine to get up to full speed



        //main engine start
        //----------------------------------------------------------------
        chamberoxygenvalve.write(90);//fully open chamber oxygenvalve to allow oxygen in
        chamberkerosenevalve.write(90);//fully open chamber kerosene valve to allow fuel in
        //-----------and take off----------------------------------------
        break;

      //******************************************************************************************************************************************************************

      /*  case'2':
          //The rocket is in space.
          digitalWrite(solenoidlock, HIGH); //The solenoid locks in the cones open to unlock allowing steppers to do their work
          Serial.println("clockwise"); // step one revolution in the other direction:
          conestepper.step(stepsPerRevolution);//the stepper motor in the cone rotates clockwise to open cone
          delay(500);//Wait for full opening

          //deploy payload.

          // step one revolution in the other direction:
          Serial.println("counterclockwise");
          conestepper.step(-stepsPerRevolution);//the stepper motor in the cone rotates counterclockwise to close cone
          delay(500);//Wait for full closing
          digitalWrite(solenoidlock, LOW); //The solenoid locks in the cones close to lock allowing landing to occur


          break;

        //**************************************************************************************************************************************************
      */
      case '0':


        //----------------------------------------
        //tilt the craft to fire into the trajectory to slow down
        //get data from accelerometers
        //get data to cause cold thrusters to flip the craft
        //get the hypergolic stuf to react
        //open valves to let fuel and oxygen react to produce thrust and slow the craft
        //get data from gyro/acelerometer to bring the craft into vertical position for decent using cold thrusters
        //get drid fins to manipulate rocket position for a while.
        //get rocket to riignite using hypergolic stuff to slow it down
        //get a  combination of rocket burns to slow the rocket down a bit
        //at a sulitable altitude get the parachute to deploy.
        //use gps data to control the accuracy of the descent using vectored-thrust....enabled by using hydraulic or servo gimbals
        //we can let the descent be piloted
        //at 700 metres fire rockets to slow it down
        //at 350 metres unclamp the legs
        //since were using parrachutes...vectored thrust can take the rocket to very accurate points
        //this will need to be man guided using google maps in real time
        //--------------------wait for data on the I2C bus and execute data in cases//
        if (Serial.available() > 0) {
          char data = Serial.read();

          if (data == '1') {

            //if height is less than 2000 metres try to land and deploy legs
            //map deceleration to effective thrust such that increased deceleration speed leads to increesd thrust

            digitalWrite(startermotorrelay2, HIGH); //turn on starter motor with relay that routes power from battery into the motor to spin turbine
            digitalWrite(sparkplug2, HIGH); //turn on a spark to ignite reaction in combustion chamber

            extractionvalve.write(20);//open exraction valve a bit to replalce outgoing kerosene,eabling rocket to function efficiently
            mainoxygenvalve.write(90);//fully open main oxygen valve
            mainkerosenevalve.write(90);//fully open main kerosene valve
            chamberoxygenvalve.write(0);//fully OPEN chamber oxygenvalve
            chamberkerosenevalve.write(0);//fully OPEN chamber kerosene valve
          }



          if (data == '2') { //if height is less than one kilometer continue firing

            digitalWrite(startermotorrelay2, HIGH); //turn on starter motor with relay that routes power from battery into the motor to spin turbine
            digitalWrite(sparkplug2, HIGH); //turn on a spark to ignite reaction in combustion chamber

            extractionvalve.write(20);//open exraction valve a bit to replalce outgoing kerosene,eabling rocket to function efficiently
            mainoxygenvalve.write(90);//fully open main oxygen valve
            mainkerosenevalve.write(90);//fully open main kerosene valve
            chamberoxygenvalve.write(0);//fully OPEN chamber oxygenvalve
            chamberkerosenevalve.write(0);//fully OPEN chamber kerosene valve
            //unclamp the legs and allow them to extend.....the system is powered by high pressure gas..for quick leg deployment
            // unclamp legs
            Serial.println("unclamping legs");
            digitalWrite(leglock, HIGH); //turn on solenoid lock to unclamp the legs allowing them to extend(three locks powered by one relay or transistor)...powered by a cylinder of compressed gas..tubes feed the legs from one servo valve
            gas.write(180);//fully open gas cylinder for leg exttension
            delay(500);





          }
          if (data == '3') { //if height is less than 500 metre continue firing

            digitalWrite(startermotorrelay2, HIGH); //turn on starter motor with relay that routes power from battery into the motor to spin turbine
            digitalWrite(sparkplug2, HIGH); //turn on a spark to ignite reaction in combustion chamber

            extractionvalve.write(20);//open exraction valve a bit to replalce outgoing kerosene,eabling rocket to function efficiently
            mainoxygenvalve.write(90);//fully open main oxygen valve
            mainkerosenevalve.write(90);//fully open main kerosene valve
            chamberoxygenvalve.write(90);//fully OPEN chamber oxygenvalve
            chamberkerosenevalve.write(90);//fully OPEN chamber kerosene valve
            //rocket sholuld reener at less than 500kph...then let the parachute absorb much of that speed
            //get accelerometrers to read its orientation then flip the rocket to face opposite the trajectory using cold thrusters...fire rocket into trajectory to slow it down for landing
            //get gps to lead the rocket to a slow touch down
            // i have no freakin idea...lemme get gps library to guide the rocket down
            //also have to get mpu-6050 library to see how...the idea is to wait and see if the rocket starts decending...at the point of apogee..the first stage separates
            //....cold gas thrusters fire to change orientation of the fist stage into the opposite direction..engines light up and fire into the new direction...to slow down the space
            //craft....then grid fins deploy to guide the craft into desired trajectory.....then it fires engines to slow down a bit....grid fins continue guiding properly
            //at a desired altiude say 1km....engines fire to bring the space craft to a halt on the ground...
            //near the gound the mpu6050 maps changes in y acceleration/y gyro and slightly maps the readings to y servo to adjust orientation for one straight deceleration
          }

          if (data == '4') { //if height is less than one metre turn off every thing

            digitalWrite(startermotorrelay2, LOW); //turn on starter motor with relay that routes power from battery into the motor to spin turbine
            digitalWrite(sparkplug2, LOW); //turn on a spark to ignite reaction in combustion chamber

            extractionvalve.write(0);//open exraction valve a bit to replalce outgoing kerosene,eabling rocket to function efficiently
            mainoxygenvalve.write(0);//fully open main oxygen valve
            mainkerosenevalve.write(0);//fully open main kerosene valve
            chamberoxygenvalve.write(0);//fully OPEN chamber oxygenvalve
            chamberkerosenevalve.write(0);//fully OPEN chamber kerosene valve
          }
          break;
        }
    }
  }
}