I tried to monitor fuel usage using three sensors, namely an ultrasonic sensor to measure tank volume, a flowmeter sensor to measure the flow of fuel coming out of the tank, and a proximity sensor to measure engine speed, but when reading in LabView using Visa, the readings did not stay in place. Sometimes the readings from the flowmeter sensor are displayed in the ultrasonic sensor readings or sometimes vice versa this is my Arduinno coding // Pin untuk sensor flowmeter const double flowMeterPin = 2; // Ganti dengan pin yang sesuai // Pin untuk sensor ultrasonik HC-SR04 const double trigPin = 9; const double echoPin = 10; long durasi, jarak; // Pin untuk sensor infrared proximity const double irProximityPin = 4; // Ganti dengan pin yang sesuai // Variabel untuk menghitung liter yang telah mengalir volatile double pulseCount = 0; float flowRate = 0.0; unsigned int flowMilliLitres = 0; unsigned long totalMilliLitres = 0; unsigned long oldTime = 0; void setup() { Serial.begin(9600); pinMode(flowMeterPin, INPUT); pinMode(trigPin, OUTPUT); pinMode(echoPin, INPUT); pinMode(irProximityPin, INPUT); // Attach interrupt untuk sensor flowmeterq } void loop() { // Membaca data dari sensor flowmeter dan menghitung laju alir unsigned long currentTime = millis(); if (currentTime - oldTime > 1000) { detachInterrupt(digitalPinToInterrupt(flowMeterPin)); flowRate = (1000.0 / (currentTime - oldTime)) * pulseCount; oldTime = currentTime; flowMilliLitres = (flowRate / 60) * 1000; totalMilliLitres += flowMilliLitres; pulseCount = 0; Serial.print(flowRate); Serial.print(totalMilliLitres); Serial.println(" ml"); attachInterrupt(digitalPinToInterrupt(flowMeterPin), pulseCounter, FALLING); } // Membaca data dari sensor ultrasonik digitalWrite(trigPin, LOW); delayMicroseconds(10); digitalWrite(trigPin, HIGH); delayMicroseconds(10); digitalWrite(trigPin, LOW); delayMicroseconds (10); durasi = pulseIn(echoPin, HIGH); jarak = (durasi / 2) / 29.1; Serial.print( jarak ); Serial.println(" cm"); // Membaca data dari sensor infrared proximity int irProximityValue = analogRead(irProximityPin); int rpm = map(irProximityValue, 0, 1023, 0, 1000); // Misalnya, 0-1023 analog input menjadi 0-1000 rpm Serial.println(rpm); delay(1000); // Delay satu detik (sesuaikan sesuai kebutuhan) } // Fungsi untuk menghitung pulsa dari sensor flowmeter void pulseCounter() { pulseCount++; }

LabVIEW

As has been mentioned before, we cannot analyze pictures of code. If you want us to comment, attach the actual VI.

We cannot tell anything about all the blue express VIs and how they are configured
There are still terminals without labels (really bad idea!)
If you would show the digital display of the charts, you could eliminate many indicators.
Your series of multiplications can be simplified.
Way too many wire bends.
Weird diagram background color.
Mix of terminal styles (icon or not).
What's in the FALSE case?
Using plain comma delimited files using low-level primitives would be so much more efficient, open the file before the loop and write the headers, the append rows inside the loop, then closing the file after the loop is very simple and since the file is kept open there is little OS overhead.

LabVIEW Champion.