Importance and Utility of Water Pump Control

Water pump control is a crucial aspect in various applications, such as irrigation systems, water supply systems, and industrial processes. By using an Arduino microcontroller, we can automate the operation of water pumps, ensuring efficient and reliable water management. This article will guide you through a project that demonstrates the control of a water pump using Arduino, providing you with the necessary knowledge and examples to implement similar systems.

Projeto: Water Pump Control System

The objective of this project is to create a water pump control system that can be used in applications such as garden irrigation. The system will monitor the water level in a reservoir and automatically turn the pump on or off based on the water level. Additionally, it will include a manual control mode, allowing the user to manually control the pump operation.

Functionalities:

1. Automatic mode: The system will continuously monitor the water level using a water level sensor. When the water level falls below a certain threshold, the pump will be turned on. Once the water level reaches a predefined maximum level, the pump will be turned off.
2. Manual mode: The user can switch to manual mode, where they can manually control the pump using a push-button switch. Pressing the switch will turn the pump on, and pressing it again will turn it off.

List of Components:

1. Arduino Uno - 1x
2. Water level sensor - 1x
3. Relay module - 1x
4. Push-button switch - 1x
5. Water pump - 1x
6. Jumper wires - as required

Examples:

Example 1: Automatic Mode

// Water Pump Control System - Automatic Mode

const int waterLevelSensorPin = A0; // Analog pin for water level sensor
const int pumpRelayPin = 2; // Digital pin for pump relay

int waterLevelThreshold = 500; // Threshold value for water level
int pumpStatus = LOW; // Variable to store pump status

void setup() {
  pinMode(pumpRelayPin, OUTPUT); // Set pump relay pin as output
  Serial.begin(9600); // Initialize serial communication
}

void loop() {
  int waterLevel = analogRead(waterLevelSensorPin); // Read water level from sensor

  if (waterLevel < waterLevelThreshold && pumpStatus == LOW) {
    digitalWrite(pumpRelayPin, HIGH); // Turn on the pump
    pumpStatus = HIGH; // Update pump status
    Serial.println("Pump turned on");
  }
  else if (waterLevel >= waterLevelThreshold && pumpStatus == HIGH) {
    digitalWrite(pumpRelayPin, LOW); // Turn off the pump
    pumpStatus = LOW; // Update pump status
    Serial.println("Pump turned off");
  }
  delay(1000); // Delay for stability
}

Example 2: Manual Mode

// Water Pump Control System - Manual Mode

const int pumpRelayPin = 2; // Digital pin for pump relay
const int manualSwitchPin = 3; // Digital pin for manual switch

int pumpStatus = LOW; // Variable to store pump status

void setup() {
  pinMode(pumpRelayPin, OUTPUT); // Set pump relay pin as output
  pinMode(manualSwitchPin, INPUT_PULLUP); // Set manual switch pin as input with internal pull-up resistor
  Serial.begin(9600); // Initialize serial communication
}

void loop() {
  if (digitalRead(manualSwitchPin) == LOW && pumpStatus == LOW) {
    digitalWrite(pumpRelayPin, HIGH); // Turn on the pump
    pumpStatus = HIGH; // Update pump status
    Serial.println("Pump turned on (manual mode)");
    delay(500); // Debounce delay
  }
  else if (digitalRead(manualSwitchPin) == LOW && pumpStatus == HIGH) {
    digitalWrite(pumpRelayPin, LOW); // Turn off the pump
    pumpStatus = LOW; // Update pump status
    Serial.println("Pump turned off (manual mode)");
    delay(500); // Debounce delay
  }
}