Arduino İle Batarya Seviye Testi

#include "U8glib.h"
#define MOSFET_Pin 2
#define Bat_Pin A0
#define Res_Pin A1
#define Buzzer_Pin 9
U8GLIB_SH1106_128X64 u8g(U8G_I2C_OPT_NONE); // I2C / TWI 
float Capacity = 0.0; // Capacity in mAh
float Res_Value = 10.0; // Resistor Value in Ohm
float Vcc = 4.64; // Voltage of Arduino 5V pin ( Mesured by Multimeter )
float Current = 0.0; // Current in Amp
float mA=0; // Current in mA
float Bat_Volt = 0.0; // Battery Voltage 
float Res_Volt = 0.0; // Voltage at lower end of the Resistor 
float Bat_High = 4.3; // Battery High Voltage
float Bat_Low = 2.9; // Discharge Cut Off Voltage
unsigned long previousMillis = 0; // Previous time in ms
unsigned long millisPassed = 0; // Current time in ms
float sample1 =0;
float sample2= 0;
int x = 0;
int row = 0;
//************************ OLED Display Draw Function *******************************************************
void draw(void) {
u8g.setFont(u8g_font_fub14r); // select font
if ( Bat_Volt < 1){
u8g.setPrintPos(10,40); // set position
u8g.println("No Battery!"); 
}
else if ( Bat_Volt > Bat_High){
u8g.setPrintPos(25,40); // set position
u8g.println("High-V!"); 
}
else if(Bat_Volt < Bat_Low){
u8g.setPrintPos(25,40); // set position
u8g.println("Low-V!"); 
}
else if(Bat_Volt >= Bat_Low && Bat_Volt < Bat_High ){
u8g.drawStr(0, 20, "Volt: "); // put string of display at position X, Y
u8g.drawStr(0, 40, "Curr: ");
u8g.drawStr(0, 60, "mAh: ");
u8g.setPrintPos(58,20); // set position
u8g.print( Bat_Volt,2); // display Battery Voltage in Volt
u8g.println("V"); 
u8g.setPrintPos(58,40); // set position
u8g.print( mA,0); // display current in mA
u8g.println("mA"); 
u8g.setPrintPos(58, 60); // set position
u8g.print( Capacity ,1); // display capacity in mAh
}
}
//******************************Buzzer Beep Function *********************************************************
void beep(unsigned char delay_time){
analogWrite(9, 20); // PWM signal to generate beep tone
delay(delay_time); // wait for a delayms ms
analogWrite(Buzzer_Pin, 0); // 0 turns it off
delay(delay_time); // wait for a delayms ms
}
//*******************************Setup Function ***************************************************************
void setup() {
Serial.begin(9600);
pinMode(MOSFET_Pin, OUTPUT);
pinMode(Buzzer_Pin, OUTPUT);
digitalWrite(MOSFET_Pin, LOW); // MOSFET is off during the start
Serial.println("CLEARDATA");
Serial.println("LABEL,Time,Bat_Volt,capacity");
//Serial.println("Arduino Battery Capacity Tester v1.0");
//Serial.println("BattVolt Current mAh");
}
//********************************Main Loop Function***********************************************************
void loop() {
// Vcc = readVcc()/1000.0; // Conevrrt mV to Volt
// Voltage devider Out = Bat_Volt * R2/(R1+R2 ) // R1 =10K and R2 =10K 
//************ Measuring Battery Voltage ***********
for(int i=0;i< 100;i++)
{
sample1=sample1+analogRead(Bat_Pin); //read the voltage from the divider circuit
delay (2);
}
sample1=sample1/100; 
Bat_Volt = 2* sample1 *Vcc/ 1024.0;
// ********* Measuring Resistor Voltage ***********
for(int i=0;i< 100;i++)
{
sample2=sample2+analogRead(Res_Pin); //read the voltage from the divider circuit
delay (2);
}
sample2=sample2/100;
Res_Volt = 2* sample2 * Vcc/ 1024.0;
//********************* Checking the different conditions *************
if ( Bat_Volt > Bat_High){
digitalWrite(MOSFET_Pin, LOW); // Turned Off the MOSFET // No discharge 
beep(200);
Serial.println( "Warning High-V! ");
delay(1000);
}
else if(Bat_Volt < Bat_Low){
digitalWrite(MOSFET_Pin, LOW);
beep(200);
Serial.println( "Warning Low-V! ");
delay(1000);
}
else if(Bat_Volt > Bat_Low && Bat_Volt < Bat_High ) { // Check if the battery voltage is within the safe limit
digitalWrite(MOSFET_Pin, HIGH);
millisPassed = millis() - previousMillis;
Current = (Bat_Volt - Res_Volt) / Res_Value;
mA = Current * 1000.0 ;
Capacity = Capacity + mA * (millisPassed / 3600000.0); // 1 Hour = 3600000ms
previousMillis = millis();
Serial.print("DATA,TIME,"); Serial.print(Bat_Volt); Serial.print(","); Serial.println(Capacity);
row++;
x++;
delay(4000); 
}
//**************************************************
u8g.firstPage(); 
do {
draw();
} while( u8g.nextPage() );
//*************************************************
}