Sine Wave Analyzer

Solving Approach:

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Code

/*Paste your code here*/
#define ANALOG_PIN A0	
void setup() {
  Serial.begin(9600);  
}

void loop() {
  int peakValue = 0;    // To store the peak value
  int minValue = 1023;  // Initialize with max value to find the minimum

  unsigned long sampling_start_time= millis();

  // take sample for 1 second
  while(millis() - sampling_start_time < 1000){
    int sensorValue = analogRead(ANALOG_PIN);  // Read the analog value

    // Track the peak value (highest value)
    if (sensorValue > peakValue) {
      peakValue = sensorValue;
    }

    // Track the minimum value (lowest point of the wave)
    if (sensorValue < minValue) {
      minValue = sensorValue;
    }
  }

  double peakVoltage = (peakValue - minValue) / 2.0; // peak Value calculation
  peakVoltage = (peakVoltage / 1023.0) * 5.0;  // Convert to voltage

  // calculate RMS volatge
  double rmsVoltage = peakVoltage / sqrt(2);

  // calculate average voltage
  double avgVoltage = 0.637 * peakVoltage;

  // Print the results on the Serial Monitor
  Serial.print("Peak Voltage: ");
  Serial.print(peakVoltage, 3);
 
  Serial.print("\tRMS Voltage: ");
  Serial.print(rmsVoltage, 3);
 
  Serial.print("\tAverage Voltage: ");
  Serial.println(avgVoltage, 3);

  delay(100);
}




 

Output

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