Yf-s201 Proteus Library Page

Now for the main event: simulating a water flow monitoring system. We will use an Arduino Uno (available in Proteus’s default library) and the newly installed YF-S201.

Once you have validated your code using the YF-S201 Proteus library, you must transition to real hardware. Here are pro tips: yf-s201 proteus library

For this example, assume the signal pin of the YF-S201 is connected to Digital Pin 2 of your Arduino. Now for the main event: simulating a water

const int flowPin = 2;  // Digital pin for the flow sensor
volatile int pulseCount = 0;  // Counts the number of pulses
void setup() 
  pinMode(flowPin, INPUT);
  attachInterrupt(digitalPinToInterrupt(flowPin), pulseCounter, RISING);
  Serial.begin(9600);
void loop() 
  static unsigned long lastTime = 0;
  static float flowRate = 0;
if (millis() - lastTime >= 1000) 
    lastTime = millis();
    // The YF-S201 gives 450 pulses per liter
    flowRate = (pulseCount / 450.0) * 60; // Calculate flow rate in liters per minute
    pulseCount = 0; // Reset pulse count
Serial.print("Flow Rate: ");
    Serial.print(flowRate);
    Serial.println(" liters per minute");
void pulseCounter() 
  pulseCount++;

The applications of the YF-S201 Proteus library span across various domains: For this example, assume the signal pin of