Published November 18, 2018

Smart Water

Imagine a water bottle that records how much water you drink in a day! Created by Megan Weber and Marlena Meyer.

IntermediateFull instructions provided746

Things used in this project

Hardware components

Particle Photon

Solderless Breadboard Half Size

Ultrasonic Sensor - HC-SR04 (Generic)

Built 30 oz Water bottle

5 mm LED: Green

Software apps and online services

ThingSpeak API

Story

STORYANDBACKGROUND

Drinking water is one of the easiest ways to stay healthy. It's recommended that the average person drinks 2 liters (or a half gallon) of water everyday. There are numerous benefits to drinking more water including: increasing brain power and energy, promotes weight loss, flushes out toxins, improves the quality of your skin, boosts your immune system, prevents headaches and cramps, and improves heart health.

Most people don't keep track of how much water they drink each day, but with healthier lifestyles becoming more popular it's a safe assumption that more people are going to want to know how much water they're drinking. We thought instead of counting the number of 8 oz glasses you drink or carrying around a half gallon water jug with you it would be so much better to have a water bottle that keeps track of your water intake for you.

SENSORS

The water bottle has a HC-SR04 ultrasonic distance sensor placed at the top of the bottle. It's used to measure and record the distance from the top of the bottle to the top of the water. This value is recorded and converted into volume. When the recommended amount of water drank has been achieved, an LED will be switched on.

HC-SR04 Ultrasonic Distance Sensor

SETUP

Here is a picture of the inside of the lid with the sensor attached.

Smart Water Lid

Here is a picture of the bottle with both photons and battery packs.

Smart Water Full Set Up

GRAPH

This graph shows the change in distance measured by the HC-SR04 over time.

Distance vs Time for Water Level

VIDEO

Here is an amazing Home Shopping Network Infommercial for Smart Water. Given the time of year, it's the Halloween Special!

Smart Water Infommercial

Code

void setup() {
    
    pinMode(D0,OUTPUT); 
    digitalWrite(D0,LOW);

    Particle.subscribe("volume", myHandler);
    
}

void myHandler(const char *event, const char *data) {

    if (strcmp(data,"lightOn")) {//Code recieves message from photon one, indicating that the lid is OPENED, and to turn the lights ON
      digitalWrite(D0,HIGH);
      
}

    else if (strcmp(data,"lightOff")) {//Code recieves message from photon one, indicating that the lid is CLOSED, and to turn the lights OFF
          digitalWrite(D0,LOW);

  }
}

const int triggerPin = D1;
const int echoPin = D0;
int light = D7;
int waterlevel;

unsigned long duration;
int mydistance;

void setup() {

  pinMode(triggerPin, OUTPUT);

  pinMode(echoPin, INPUT);
  
  pinMode(light,OUTPUT);
  
Particle.subscribe("waterlevel", myGoal);
  
}

void myGoal(const char *event, const char *data) {

//first to make sure that the trigger pin is off, we'll make it 
//low for 2 microseconds:

digitalWrite(triggerPin, LOW);
delayMicroseconds(2);

//next we'll send the signal for 10 microseconds and then turn 
//it off (this is the ultrasonic wave)

digitalWrite(triggerPin, HIGH);
delayMicroseconds(10);
digitalWrite(triggerPin, LOW);

//this gets the time (duration) which the HIGH pulse was 
//recieved and then converts it to distance

duration = pulseIn(echoPin, HIGH);

// once duration is aquired, it is converted into both a string and an integer using the following formula

waterlevel = duration*.035/2;

String mydistance = String(duration*.035/2);

//this just publishes the distance to Thingspeak

Particle.publish("mydistance", mydistance, PRIVATE);

float volume;

volume=(3.14*10.5625*waterlevel);

delay(3000);

if (volume > 30 ) {

Particle.publish("volume", "lightOn", 20);
digitalWrite(light, HIGH);
delay(5000);
digitalWrite(light, LOW);
}

// this is the situation where the other photon indicates the water needs to be filled, but this photon does not

else if (volume < 30 ) {

Particle.publish("volume", "lightOff", 20);
digitalWrite(light, HIGH);
delay(5000);
digitalWrite(light, LOW);

}
}

Credits

Megan Weber

1 project • 0 followers

Thanks to Marlena Meyer.

Smart Water

Things used in this project

Hardware components

Software apps and online services

Story

GRAPH

VIDEO

Schematics

HC-SR04 Schematic

LED Schematic

Code

LED Code

Ultrasonic Sensor Code

Credits

Megan Weber

Comments

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Smart Water

Smart Water

Things used in this project

Hardware components

Software apps and online services

Story

GRAPH

VIDEO

Schematics

HC-SR04 Schematic

LED Schematic

Code

LED Code

Ultrasonic Sensor Code

Credits

Megan Weber

Comments

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