Water Saver with Grove Beginner Kit

Nowadays, many people waste water. So I made a Water Saver. When people waste water, it will warn you with a cry face.

BeginnerFull instructions provided1 hour112

Things used in this project

Hardware components

Seeed Studio Grove Beginner Kit for Arduino

Seeed Studio Grove - RGB LED Matrix w/Driver

Seeed Studio Grove-LCD-RGB-Backlight

Software apps and online services

Arduino IDE

PlatformIO IDE

Hand tools and fabrication machines

Hot glue gun (generic)

Paper Box

Story

As we can see, the world population is growing quickly day by day. So enough fresh water is needed to feed such a big population. What's more, with the development of industry, most factories produce waste gas. which results in the pollution of water. Though fresh, a good amount of it can no longer be used. Only quite limited fresh water resource is available to human beings. So it's high time for us human beings to take quick action to protect water resource. Stop wasting water and save water, otherwise, we cannot survive on the earth.

So I made a Water Saver.

You can cut down the Buzzer and the Sound Sensor from your Beginner Kit, or you can just use the whole Beginner Kit board.

If you want to use Arduino IDE to upload your code, please Add the zip library in Arduino IDE.

The Library:

seeed-studio/Grove - LCD RGB Backlight@^1.0.0

seeed-studio/Seeed_RGB_LED_Matrix@^1.0.0

You can connect the components wiht Grove Connector.

Sound Sensor -> A2 Connector

LED -> D4 Connector

Buzzer -> D5 Connector

LED Matrix -> I2C Connector

1602 Display -> I2C Connector

WaterSaverforArduino

#include <Arduino.h>
#include <Wire.h>
#include "rgb_lcd.h"
#include "grove_two_rgb_led_matrix.h"

rgb_lcd lcd;

GroveTwoRGBLedMatrixClass matrix;

const int wasteColorR = 255;
const int wasteColorG = 0;
const int wasteColorB = 0;
const int restColorR = 255;
const int restColorG = 255;
const int restColorB = 255;


const int pinSound = A2;
const int pinLed   = 4;
const int speakerPin = 5;

int thresholdValue = 450;  // determines loudness for sound sensor
const unsigned long waterUseAllowedDuration = 3000;  // how long you want to use water for before warning

bool monitoring = false;

void playTone(int tone, int duration) {
    for (long i = 0; i < duration * 1000L; i += tone * 2) {
        digitalWrite(speakerPin, HIGH);
        delayMicroseconds(tone);
        digitalWrite(speakerPin, LOW);
        delayMicroseconds(tone);
    }
}

uint64_t smile[] = {
 
  0xffff5e5e5e5effff,
  0xff5effffffff5eff,
  0x5eff5effff5eff5e,
  0x5effffffffffff5e,
  0x5eff5effff5eff5e,
  0x5effff5e5effff5e,
  0xff5effffffff5eff,
  0xffff5e5e5e5effff
};

uint64_t cry[] = {
 
  0xffff00000000ffff,
  0xff00ffffffff00ff,
  0x00ff00ffff00ff00,
  0x00ffffffffffff00,
  0x00ffff0000ffff00,
  0x00ff00ffff00ff00,
  0xff00ffffffff00ff,
  0xffff00000000ffff
};

uint64_t idle[] = {
 
  0xffff29292929ffff,
  0xff29ffffffff29ff,
  0x29ff29ffff29ff29,
  0x29ffffffffffff29,
  0x29ff29292929ff29,
  0x29ffffffffffff29,
  0xff29ffffffff29ff,
  0xffff29292929ffff
};

void setup() 
{
    pinMode(pinLed, OUTPUT);

    Wire.begin();
    // set up the LCD's number of columns and rows:
    lcd.begin(16, 2);
    
    lcd.setRGB(restColorR, restColorG, restColorB);
    lcd.setCursor(0, 0);
    lcd.print("Water conserved     ");
    delay(1000);
}

void loop() 
{
    int sensorValue = analogRead(pinSound);
    if (sensorValue > thresholdValue) {
      lcd.setCursor(0, 0);
      lcd.setRGB(255, 251, 140);
      lcd.print("Monitoring use  ");
      int i=0;
      matrix.displayFrames(smile+i*8, 200, false, 1);
      delay(waterUseAllowedDuration);
      if (analogRead(pinSound) > thresholdValue - 200) {
        lcd.setRGB(wasteColorR, wasteColorG, wasteColorB);
        lcd.setCursor(0, 0);
        lcd.print("Excess water use");
        lcd.setCursor(0, 1);
        lcd.print("Try to conserve water");
        playTone(1700, 1000);
        int i=0;
        matrix.displayFrames(cry+i*8, 200, false, 1);
        delay(5000);
        lcd.clear();
      }
    } else {
      lcd.setRGB(restColorR, restColorG, restColorB);
      lcd.setCursor(0, 0);
      lcd.print("Water conserved");
      int i=0;
      matrix.displayFrames(smile+i*8, 200, false, 1);
    //   delay(3000);
    }
}