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/ Define the pin connections const int trigPin = 2; // Trig pin of the ultrasonic sensor const int echoPin = 3; // Echo pin of the ultrasonic sensor // Constants for tank levels const int EMPTY_DISTANCE = 7; // Distance in cm when the tank is empty const int FULL_DISTANCE = 1; // Distance in cm when the tank is full // Define the LED pins const int ledPins[] = {4, 5, 6, 7, 8, 9, 10, 11}; void setup() { // Initialize the serial communication Serial.begin(9600); // Configure the ultrasonic sensor pins pinMode(trigPin, OUTPUT); pinMode(echoPin, INPUT); // Configure LED pins for (int i = 0; i < sizeof(ledPins) / sizeof(ledPins[0]); i++) { pinMode(ledPins[i], OUTPUT); } } void loop() { // Send a pulse to the ultrasonic sensor digitalWrite(trigPin, LOW); delayMicroseconds(2); digitalWrite(trigPin, HIGH); delayMicroseconds(10); digitalWrite(trigPin, LOW); // Measure the duration of the echo signal long duration = pulseIn(echoPin, HIGH); // Calculate the distance based on the speed of sound float distance = duration * 0.034 / 2; // Print the water level to the serial monitor Serial.print("Water level: "); Serial.print(distance); Serial.println(" cm"); // Calculate and display the tank level on the LEDs int tankLevel = map(distance, EMPTY_DISTANCE, FULL_DISTANCE, 0, sizeof(ledPins) / sizeof(ledPins[0])); if (tankLevel > sizeof(ledPins) / sizeof(ledPins[0])) { tankLevel = sizeof(ledPins) / sizeof(ledPins[0]); } else if (tankLevel < 0) { tankLevel = 0; } // Turn on LEDs based on the tank level for (int i = 0; i < sizeof(ledPins) / sizeof(ledPins[0]); i++) { if (i < tankLevel) { digitalWrite(ledPins[i], HIGH); } else { digitalWrite(ledPins[i], LOW); } } // Delay before taking the next measurement delay(1000); }
Bhai mene Aisa jugaad bhanaya hun ki sirf esp32 ka 1 pin se fan ka speed kam ya jyada karskthe . o bi sirf rs 150 me ho jayega..vo ithna compact he ki sirf 2cm chowda 4 cm lamaba he😊
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@@Chems7308 ok mene already isse accha banaya hun poore prosses ko eak video banake kal mere aur eak dusra channel me upload karke tuje channel ka I'd yaha pe comment karunga
