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battery low voltage indicator with push button and led

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battery low voltage indicator with push button and led

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i made a circuit that management motor velocity and point out the motor velocity ranges with leds, the push button management the velocity degree and leds

enter image description here

//********************************************^************************************************
//  https://discussion board.arduino.cc/t/control-motor-speed-with-npn-and-push-button-no-driver/1184925
//
//
//
//  Model    YY/MM/DD    Feedback
//  =======    ========    ====================================================================
//  1.00       20/23/02    Working code
//  1.10       20/23/03    Added motor and LEDs OFF if change pressed for >= 3 sec.
//
//
//

#outline PRESSED            HIGH
#outline RELEASED           LOW

#outline ENABLED            true
#outline DISABLED           false

#outline LEDon              HIGH
#outline LEDoff             LOW

#outline MOTORoff           0

//GPIOs
const byte Button        = 2;
const byte ledpin        = 3;
const byte ledpin1       = 4;
const byte ledpin2       = 5;
const byte Motor         = 9;
const byte heartbeatLED  = 13;

//Variables
byte lastButton          = RELEASED;
byte currSwitch;

int Speed_Level;

bool bCheckingSwitch     = DISABLED;

//timing stuff
unsigned lengthy heartbeatTime;
unsigned lengthy switchesTime;
unsigned lengthy threeSecondTime;

//                                      s e t u p ( )
//********************************************^************************************************
void setup()
{
  pinMode(Button, INPUT);

  pinMode(ledpin, OUTPUT);
  pinMode(ledpin1, OUTPUT);
  pinMode(ledpin2, OUTPUT);
  pinMode(Motor, OUTPUT);
  pinMode(heartbeatLED, OUTPUT);

} //END of   setup()


//                                       l o o p ( )
//********************************************^************************************************
void loop()
{
  //************************************************              T I M E R  heartbeatLED
  //is it time to toggle the heartbeat LED ?
  if (millis() - heartbeatTime >= 500ul)
  {
    //restart this TIMER
    heartbeatTime = millis();

    //toggle the heartbeat LED
    if (digitalRead(heartbeatLED) == HIGH) digitalWrite(heartbeatLED, LOW);
    else digitalWrite(heartbeatLED, HIGH);
  }

  //************************************************              T I M E R  examine switches
  //is it time to examine our switches ?
  if (millis() - switchesTime >= 50ul)
  {
    //restart this TIMER
    switchesTime = millis();

    checkSwitches();
  }

  //************************************************              T I M E R  three seconds
  //if enabled, is it time to show issues OFF ?
  if (bCheckingSwitch == ENABLED && millis() - threeSecondTime >= 3000ul)
  {
    //we're completed with this TIMER
    bCheckingSwitch = DISABLED;

    //restart the sequence
    Speed_Level = -1;

    analogWrite(Motor, MOTORoff);
    digitalWrite(ledpin, LEDoff);
    digitalWrite(ledpin1, LEDoff);
    digitalWrite(ledpin2, LEDoff);
  }

} //END of   loop()


//                               c h e c okay S w i t c h e s ( )
//********************************************^************************************************
void checkSwitches()
{
  byte state;

  //************************************************              Button
  state = digitalRead(Button);

  //has there been a state change within the change ?
  if (lastButton != state)
  {
    //replace to the brand new state
    lastButton = state;

    //*******************************
    if (state == PRESSED)
    {
      //allow the TIMER
      bCheckingSwitch = ENABLED;

      //begin the TIMER
      threeSecondTime = millis();
    }

    //*******************
    //the change was launched
    else
    {
      //disable the TIMER
      bCheckingSwitch = DISABLED;

      Speed_Level++;
      //do not go over 3
      if (Speed_Level >= 4)
      {
        Speed_Level = 0;
      }

      //*******************
      if (Speed_Level == 1)
      {
        analogWrite(Motor, 50);
        digitalWrite(ledpin, LEDon);
        digitalWrite(ledpin1, LEDoff);
        digitalWrite(ledpin2, LEDoff);
      }

      //*******************
      else if (Speed_Level == 2)
      {
        analogWrite(Motor, 75);
        digitalWrite(ledpin, LEDoff);
        digitalWrite(ledpin1, LEDon);
        digitalWrite(ledpin2, LEDoff);
      }

      //*******************
      else if (Speed_Level == 3)
      {
        analogWrite(Motor, 100);
        digitalWrite(ledpin, LEDoff);
        digitalWrite(ledpin1, LEDoff);
        digitalWrite(ledpin2, LEDon);
      }

      //*******************
      else
      {
        analogWrite(Motor, MOTORoff);
        digitalWrite(ledpin, LEDoff);
        digitalWrite(ledpin1, LEDoff);
        digitalWrite(ledpin2, LEDoff);
      }
    }
  }

}//END of   checkSwitches()

//********************************************^************************************************

now i wish to make battery low voltage indicator so the battery led blinking in crimson when the battery decrease than 680

and this battery led flip on and off with the degrees leds so if

motor and leds are working = the battery led blinking
motor and leds cease = the leds stops

enter image description here

i attempted this code however it not working in any respect simply blinking the battery led and no motor management

//********************************************^************************************************
//  https://discussion board.arduino.cc/t/control-motor-speed-with-npn-and-push-button-no-driver/1184925
//
//
//
//  Model    YY/MM/DD    Feedback
//  =======    ========    ====================================================================
//  1.00       20/23/02    Working code
//  1.10       20/23/03    Added motor and LEDs OFF if change pressed for >= 3 sec.
//
//
//

#outline PRESSED            HIGH
#outline RELEASED           LOW

#outline ENABLED            true
#outline DISABLED           false

#outline LEDon              HIGH
#outline LEDoff             LOW

#outline MOTORoff           0

#outline Purple                6
#outline lipo  A0

float lipoV = 0;

//GPIOs
const byte Button        = 2;
const byte ledpin        = 3;
const byte ledpin1       = 4;
const byte ledpin2       = 5;
const byte Motor         = 9;
const byte heartbeatLED  = 13;

//Variables
byte lastButton          = RELEASED;
byte currSwitch;

int Speed_Level;

bool bCheckingSwitch     = DISABLED;

//timing stuff
unsigned lengthy heartbeatTime;
unsigned lengthy switchesTime;
unsigned lengthy threeSecondTime;

//                                      s e t u p ( )
//********************************************^************************************************
void setup()
{
  pinMode(Button, INPUT);

  pinMode(ledpin, OUTPUT);
  pinMode(ledpin1, OUTPUT);
  pinMode(ledpin2, OUTPUT);
  pinMode(Motor, OUTPUT);
  pinMode(heartbeatLED, OUTPUT);
  pinMode(Purple,OUTPUT);
  pinMode(lipo,INPUT);

} //END of   setup()


//                                       l o o p ( )
//********************************************^************************************************
void loop()
{
  //************************************************              T I M E R  heartbeatLED
  
   lipoV = analogRead(lipo);
  Serial.println(lipoV);

     digitalWrite(Purple, HIGH); // flip the LED on (HIGH is the voltage degree)
     delay(1000); // look ahead to a second
     digitalWrite(Purple, LOW); // flip the LED off by making the voltage LOW
     delay(1000);

  //is it time to toggle the heartbeat LED ?
  if (millis() - heartbeatTime >= 500ul)
  {

    //restart this TIMER
    heartbeatTime = millis();

    //toggle the heartbeat LED
    if (digitalRead(heartbeatLED) == HIGH) digitalWrite(heartbeatLED, LOW);
    else digitalWrite(heartbeatLED, HIGH);
  }

  //************************************************              T I M E R  examine switches
  //is it time to examine our switches ?
  if (millis() - switchesTime >= 50ul)
  {
    //restart this TIMER
    switchesTime = millis();

    checkSwitches();
  }

  //************************************************              T I M E R  three seconds
  //if enabled, is it time to show issues OFF ?
  if (bCheckingSwitch == ENABLED && millis() - threeSecondTime >= 2000ul)
  {
    //we're completed with this TIMER
    bCheckingSwitch = DISABLED;

    //restart the sequence
    Speed_Level = -1;

    analogWrite(Motor, MOTORoff);
    digitalWrite(ledpin, LEDoff);
    digitalWrite(ledpin1, LEDoff);
    digitalWrite(ledpin2, LEDoff);
  }

} //END of   loop()


//                               c h e c okay S w i t c h e s ( )
//********************************************^************************************************
void checkSwitches()
{
  byte state;

  //************************************************              Button
  state = digitalRead(Button);

  //has there been a state change within the change ?
  if (lastButton != state)
  {
    //replace to the brand new state
    lastButton = state;

    //*******************************
    if (state == PRESSED)
    {
      //allow the TIMER
      bCheckingSwitch = ENABLED;

      //begin the TIMER
      threeSecondTime = millis();
    }

    //*******************
    //the change was launched
    else
    {
      //disable the TIMER
      bCheckingSwitch = DISABLED;

      Speed_Level++;
      //do not go over 3
      if (Speed_Level >= 4)
      {
        Speed_Level = 0;
      }

      //*******************
      if (Speed_Level == 1)
      {
        analogWrite(Motor, 50);
        digitalWrite(ledpin, LEDon);
        digitalWrite(ledpin1, LEDoff);
        digitalWrite(ledpin2, LEDoff);
      }

      //*******************
      else if (Speed_Level == 2)
      {
        analogWrite(Motor, 75);
        digitalWrite(ledpin, LEDoff);
        digitalWrite(ledpin1, LEDon);
        digitalWrite(ledpin2, LEDoff);
      }

      //*******************
      else if (Speed_Level == 3)
      {
        analogWrite(Motor, 100);
        digitalWrite(ledpin, LEDoff);
        digitalWrite(ledpin1, LEDoff);
        digitalWrite(ledpin2, LEDon);
      }

      //*******************
      else
      {
        analogWrite(Motor, MOTORoff);
        digitalWrite(ledpin, LEDoff);
        digitalWrite(ledpin1, LEDoff);
        digitalWrite(ledpin2, LEDoff);
        digitalWrite(Purple,LOW);
      }

      if(lipoV < 680){
        digitalWrite(Purple,HIGH);
      }

       else
       {
        digitalWrite(Purple,LOW);
    
       }

  }

}
}//END of   checkSwitches()

//********************************************^************************************************

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