Fluctuating voltage value in print console

Projects Programming
11

I have tried for a while now, and i just understand how i can smooth out the voltage readings. I have tried different codes with no luck.

Here is an screenshot of readings:

Skjermbilde
Skjermbilde612×766 27.8 KB

And here is a code i found on Youtube. What am i doing wrong here?

int voltPin = A0;

void setup() {
  Serial.begin(9600);
  pinMode(voltPin, INPUT);

}

void loop() {

  int numReads = 100;
  int senseSum = 0;

  for (int k = 0; k < numReads; k++) {
    senseSum += analogRead(voltPin);
  }

  int senseAve = senseSum / numReads;
  float voltage = senseAve * (17.0 / 1023.0);
  Serial.print("Battery Voltage: ");
  Serial.print(voltage);
  Serial.println("V");
  delay(2000);
}