float getPanel(){
  float value = mapfloat(average(PANEL), 409, 819, 0, 100); 
  if (value>0) {
    return value;  // %
  } 
  else { 
    return 0;  // %
  }
}

float getBattery() {
  
  float temp = average(BAT);
  Serial.print("Battery mV: ");
  Serial.println(temp*5000/1023);
  Serial.println("*******************");

  temp = mapfloat(temp, 613, 825, 0, 100);
  if (temp>100) temp=100;
  if (temp<0) temp=0;
  return temp; 
}