master control 0_4_5 teensy multi-meter

/*this is controlling my powerbox, 3050, 3090 and fans W/PWM.takes the temp of 3050/3090 to enable auto fan speed.
 fan1 is a small computer fan, fan2 is the xbox fans.(no longer connected)remote cox universal aux 0820.
 monitors the voltage and current has a selector for high current and low current (changes the resistance to calculate with) ABSOLUTE MAX OF LESS THAN 21.5v ON ALL INPUTS!
 created by SuperBrainAK
 */
#include <IRremote.h>                                       //includes libraries.
//const pin assignments
const byte irin = 27;
const byte temp = 45;
const byte vlts = 38;
const byte ain = 39;
const byte aout = 40;
const byte pbox = 0;
const byte red = 17;
const byte green = 13;
const byte v5 = 21;
const byte v9 = 22;
const byte fan1 = 26;
//const byte fan2 = 25;
const byte Button1 = 1;
const byte Button2 = 2;
const byte Button3 = 3;
const byte Button4 = 4;
const byte Button5 = 5;
const byte Button6 = 7;
const byte Button7 = 8;


IRrecv irrecv(irin);                                        //ir recv stuff.
decode_results results;

void setup () {
  pinMode(pbox, OUTPUT);                                    //pin modes
  pinMode(red, OUTPUT);
  pinMode(green, OUTPUT);
  pinMode(v5, OUTPUT);
  pinMode(v9, OUTPUT);
  pinMode(fan1, OUTPUT);
  //pinMode(fan2, OUTPUT);
  pinMode(temp, INPUT);
  pinMode(vlts, INPUT);
  pinMode(ain, INPUT);
  pinMode(aout, INPUT);
  pinMode(Button1, INPUT);
  pinMode(Button2, INPUT);
  pinMode(Button3, INPUT);
  pinMode(Button4, INPUT);
  pinMode(Button5, INPUT);
  pinMode(Button6, INPUT);
  pinMode(Button7, INPUT);
  Serial.begin(9600);
  irrecv.enableIRIn();
}
unsigned long last = millis();                              //declares millis var?
byte startup = 0;                                           //runs startup sequence if=0.
byte power = 0;                                             //main power state.
byte p5v = 0;                                               //5V power state.
byte p9v = 0;                                               //9V power state.
byte start1 = 0;                                            //startup for fan1.
int speed1 = 0;                                             //speed of fan1.
//int speed2 = 0;                                             //speed of fan2.
int lspeed1 = 0;                                            //last speed of fan1.
//int lspeed2 = 0;                                            //last speed of fan2.
int tval = 0;                                               //temperature value.
int ltval = 0;                                              //last temperature value.
float volts = 0;                                            //voltage metering.
float vampin = 0;                                           //voltage before the current resistor.
float vampout = 0;                                          //voltage after the current resistor.
byte amp = 0;                                               //0=low current, 1=high current.
float amps = 0;                                             //calculated amps.

void loop() {
  if (startup == 0){                                        //sets the states of my sensitive outputs.
    digitalWrite(red, HIGH);
    digitalWrite(pbox, HIGH);
    digitalWrite(v5, LOW);
    digitalWrite(v9, LOW);
    startup = 1;
  }
  if (speed1 != lspeed1){                                   //writes the speed of fan1 if change.
    delay (100);
    lspeed1 = speed1;
    if (speed1 <= 14){                                      //puts start1 if fan1 gets to slow to run.
      start1 = 0;
    }
    if (start1 != 2){
      if (start1 == 0){                                     //notices when to startup the fan.
        if (37 > speed1 && speed1 > 14){
          start1 = 1;
        }
      }
    }
    if (start1 == 1){                                       //starts the fan to access low speeds.
      Serial.println("starting fan1");
      analogWrite(fan1, 70);
      start1 = 2;
      delay (100);
    }
    if (speed1 > 14){
      analogWrite(fan1, speed1);
      Serial.print("fan1 speed is:");                       //says the fan1 speed.
      Serial.println(speed1);
    }
    else {
      Serial.print("fan1 unable to sustain: ");
      Serial.println(speed1);
      analogWrite(fan1, 0);
    }
  }
  /*if (speed2 != lspeed2){                                   //writes the speed of fan2 if change.
   delay (100);
   lspeed2 = speed2;
   analogWrite(fan2, speed2);
   Serial.print("fan2 speed is:");                          //says the fan2 speed.
   Serial.println(speed2);
   }*/
  byte pbutton = 0;                                         //temporary power variable state.
  byte p5 = 0;                                              //temporary 5V variable state.
  byte p9 = 0;                                              //temporary 9V variable state.
  byte crnt = 0;                                            //temporary current variable state.
  if (millis() - last > 1000) {                             //only recieves an input every second.
    if (irrecv.decode(&results)) {                          //recieves the ir signal.
      if (results.value == 0xd87245ba) {                    //power button.
        Serial.println("power button");
        pbutton = !pbutton;
      }
      else if (results.value == 0xffc03f){
        Serial.println("display/setup");
      }
      else if (results.value == 0xff807f){
        Serial.println("zoom");
      }
      else if (results.value == 0xff609f){
        Serial.println("SUB");
      }
      else if (results.value == 0xff906f){
        Serial.println("back");
      }
      else if (results.value == 0xfff807){
        Serial.println("skip");
      }
      else if (results.value == 0xffb04f){
        Serial.println("A-B");
      }
      else if (results.value == 0xffa857){                  //changes the current ranges.
        Serial.println("1/all");
        crnt = !crnt;
      }
      else if (results.value == 0xd872748b){
        Serial.println("up");
        speed1 += 5;                                        //fan1 speed +5.
      }
      else if (results.value == 0xd872b44b){
        Serial.println("down");
        speed1 -= 5;                                        //fan1 speed -5.
      }
      else if (results.value == 0xd872f807){
        Serial.println("left");
        //speed2 -= 5;                                        //fan2 speed -5.
      }
      else if (results.value == 0xd87204fb){
        Serial.println("right");
        //speed2 += 5;                                        //fan2 speed +5.
      }
      else if (results.value == 0xd8720cf3){
        Serial.println("select");
      }
      else if (results.value == 0xffe817){
        Serial.println("play/pause");
      }
      else if (results.value == 0xff6897){
        Serial.println("stop");
      }
      else if (results.value == 0xffb24d){
        Serial.println("menu");
      }
      else if (results.value == 0xd872649b){
        Serial.println("input");
      }
      else if (results.value == 0xff58a7){
        Serial.println("angle");
      }
      else if (results.value == 0xff40bf){
        Serial.println("lcd mode");
      }
      else if (results.value == 0xffa05f){
        Serial.println("title");
      }
      else if (results.value == 0xd872d02f){
        Serial.println("1");
      }
      else if (results.value == 0xd872906f){
        Serial.println("2");
      }
      else if (results.value == 0xd872f00f){
        Serial.println("3");
      }
      else if (results.value == 0xd872b04f){
        Serial.println("4");
      }
      else if (results.value == 0xd87252ad){                  //5v power button.
        Serial.println("5");
        p5 = !p5;
      }
      else if (results.value == 0xd872d02f){
        Serial.println("6");
      }
      else if (results.value == 0xd872708f){
        Serial.println("7");
      }
      else if (results.value == 0xd872609f){
        Serial.println("8");
      }
      else if (results.value == 0xd872a05f){                  //9v power button.
        Serial.println("9");
        p9 = !p9;
      }
      else if (results.value == 0xd87240bf){
        Serial.println("0");
      }
      else {                                                  //tells you any unknown signal.
        if (results.decode_type == NEC) {
          Serial.print("Decoded NEC: ");
        }
        else if (results.decode_type == SONY) {
          Serial.print("Decoded SONY: ");
        }
        else if (results.decode_type == RC5) {
          Serial.print("Decoded RC5: ");
        }
        else if (results.decode_type == RC6) {
          Serial.print("Decoded RC6: ");
        }
        Serial.println(results.value, HEX);
      }
    }
    irrecv.resume();
    tval = analogRead(temp);                                  //updates the temperature.
    if (tval > 450){                                          //cold temperature turns fan off if not already off.
      if (speed1 != 0){
        speed1 = 0;
      }
    }
    if (450 >= tval && tval >= 300){                          //medium temperature auto equalize the fan.
      if (tval > ltval){                                      //if the temp. falls slow down the fan.
        speed1 --;
      }
      if (tval < ltval){
        speed1 ++;                                            //if the temp. rises speed up the fan.
      }
    }
    if (tval < 300){                                          //rather hot turns fan to max.
      speed1 = 70;
    }
    if (tval < 250){                                          //hot and hotter tells you so.
      Serial.println("heat sink is hot!");
      digitalWrite(red, HIGH);
      digitalWrite(green, HIGH);
    }
    Serial.print("temp value is:");                           //says the temp value.
    ltval = tval;                                             //updates the last temperature.
    Serial.println(tval);
    (((analogRead(vlts)/5120.0f)*5*42500)/9750) == volts;     //reads the voltage.
    Serial.print("voltage is");
    Serial.println(volts);                                    //tells you the voltage.
    (((analogRead(ain)/5120.0f)*5*42320)/9720) == vampin;     //reads the voltage in.
    (((analogRead(aout)/5120.0f)*5*42890)/9890) == vampout;   //reads the voltage out.
    Serial.print("voltage in is");
    Serial.println(vampin);                                   //tells you the voltage in.*
    Serial.print("voltage out is");
    Serial.println(vampout);                                  //tells you the voltage out.*i will comment hese out as they are just for debugging
    Serial.print("voltage drop is");
    Serial.println(vampin - vampout);                         //tells you the voltage drop.
    if (amp){                                                 //calculates for high current.
      ((vampin - vampout)/.22) == amps;
    }
    else {
      ((vampin - vampout)/.22) == amps;                       //calculates for low current.
    }
    Serial.print("amperage is ");
    if (amp){
      Serial.println("high:");
    }
    else {
      Serial.println("low:");
    }
    Serial.println(amps);                                     //tells you the amperage.
    if (digitalRead(Button1) == LOW){                         //reads the button1 state.
      Serial.println("button1");
      pbutton = !pbutton;
    }
    if (digitalRead(Button2) == LOW){                         //reads the button2 state.
      Serial.println("button2");
      p5 = !p5;
    }
    if (digitalRead(Button3) == LOW){                         //reads the button3 state.
      Serial.println("button3");
      p9 = !p9;
    }
    if (digitalRead(Button4) == LOW){                         //reads the button4 state.
      Serial.println("button4");
      crnt = !crnt;
    }
    if (pbutton == 1){                                        //toggles my power outputs.
      Serial.println("power");
      power = !power;
      if (power){
        Serial.println("on");
      }
      else {
        Serial.println("off");
      }
      digitalWrite(pbox, power ? LOW : HIGH);
      digitalWrite(green, power ? HIGH : LOW);
      digitalWrite(v5, power ? HIGH : LOW);
      digitalWrite(v9, power ? HIGH : LOW);
      digitalWrite(red, power ? LOW : HIGH);
    }
    if (p5 == 1){                                             //toggles my 5V output.
      Serial.println("5v power");
      p5v = !p5v;
      if (p5v){
        Serial.println("on");
      }
      else {
        Serial.println("off");
      }
      digitalWrite(v5, p5v ? HIGH : LOW);
    }
    if (p9 == 1){                                             //toggles my 9V output.
      Serial.println("9v power");
      p9v = !p9v;
      if (p9v){
        Serial.println("on");
      }
      else {
        Serial.println("off");
      }
      digitalWrite(v9, p9v ? HIGH : LOW);
    }
    if (crnt == 1){                                           //changes the resistance to use for current calculation.
      Serial.println("changed resistance");
      amp = !amp;
    }
    last = millis();
  }                                                           //end of every second things.
  /*if (digitalRead(Button4) == LOW){                           //change speeds of fans.
    speed1 -= 1;
    delay (100);
  }
  if (digitalRead(Button5) == LOW){
    speed1 += 1;
    delay (100);
  }*/
  /*if (digitalRead(Button6) == LOW){
   speed2 -= 1;
   delay (100);
   }
   if (digitalRead(Button7) == LOW){
   speed2 += 1;
   delay (100);
   }*/
  if (speed1 < 0){                                            //limits range of speeds.
    Serial.println("fan1 low");
    speed1 = 0;
  }
  if (speed1 > 70){
    Serial.println("fan1 high");
    speed1 = 70;
  }
  /*if (speed2 < 0){
   Serial.println("fan2 low");
   speed2 = 0;
   }
   if (speed2 > 100){
   Serial.println("fan2 high");
   speed2 = 100;
   }*/
}