Created April 13, 2017

Brew with Light

Ever wish a cup of coffee was there for you as soon as you woke up? Wait no more, we have solved your problem with our Brew with Light.

Beginner6 hours13

Things used in this project

Hardware components

Jumper wires (generic)

USB-A to Micro-USB Cable

Photo resistor

Resistor 221 ohm

Keurig Coffee maker

Servos (Tower Pro MG996R)

Particle Photon

Software apps and online services

Particle

Story

Story:

As every college student knows, the only thing keeping us going after a few hours of sleep is sweet caffeine. The problem arises when you have an 8am class yet you’ve only slept for 3 hours, and you need every bit of extra sleep as possible. You wake up and you immediately must rush to class but without coffee. How can you function? You have to make the choice of choosing your sweet coffee of life or being late to class. Well, not anymore. We developed a solution to save you some extra zzzz’s and still make it to class on time with your coffee. With our new invention you would never have to worry about having enough time to get your coffee. As soon as you wake up and turn on your lights your coffee will automatically start brewing. You won’t have to choose between extra sleep and coffee. Once you turn on your lights to get ready, your coffee will start brewing.

Solution:

To solve the problem we used two particle photons to communicate through Wi-Fi. With the help of a photon resistor to sense the bedroom light it will trigger one photon to tell the second photon in the kitchen to start brewing your coffee.

Determining Starting Values for Photo resistor

We calculated the average light captured by the photo resistor in the room chosen. The average value determined was 64 so we used a value of 60 in the code to make sure the sensor was triggered as seen in the graph below.

Below is a photo of the servo motor connected to one of the particle photons

Completed setup of two photons, coffee maker, motor and photo resistor working together

Below is a photo of the 221 ohm resistor and photo resistor connected to one of the particle photons

Code

int led = D0; 

int photoresistor = A0; 

int power = A5; 

int analogvalue; 


void setup() {

    
    pinMode(led,OUTPUT);
    pinMode(photoresistor,INPUT);  
    pinMode(power,OUTPUT); 
   
    digitalWrite(power,HIGH);

    
    Particle.variable("analogvalue", &analogvalue, INT);
    

}




void loop() {

    
    analogvalue = analogRead(photoresistor);
    
    if (analogvalue>=64){
        Particle.publish("800853132_lights_on", "coffee_time", 1001);
    delay(100);
}
}

Servo myservo;  // create servo object to control a servo
                // a maximum of eight servo objects can be created
int led2 = D7;
int pos = 0;    // variable to store the servo position
int servo = D0;
void setup()
{
  myservo.attach(D0);  // attaches the servo on the D0 pin to the servo object
  // Only supported on pins that have PWM
  Particle.function("Coffee",servo1);
  pinMode(led2, OUTPUT);    
  Particle.subscribe("800853132_lights_on",loop, "270035001847343338333633");
}

void loop(const char *event, const char *data)
{
 
 
                                 
          myservo.write(pos = -1);              
          delay(2000);                       
        
              
          myservo.write(pos = 80);
          
          Particle.publish("800854853_Coffee_Is_Ready", "Brew_Started_Light/Alarm");
          delay(600000);
        
     Particle.publish("800854853_Coffee_Is_Ready", "Brew_Executed_Light/Alarm");
    
     
         
          
}     

int servo1(String command) {

    if (command=="on") {
        myservo.write(pos = -1);
        delay(2000);                       
        myservo.write(pos = 80);
        Particle.publish("800854853_Coffee_Is_Ready", "Brew_Started_Phone");
        return 1;
    }
    else if (command=="off") {
        myservo.write(pos = -1);              
        delay(2000);                       
        myservo.write(pos = 80);
        Particle.publish("800854853_Coffee_Is_Ready", "Coffee_Off_Phone");
        return 0;
    }
    else {
        return -1;
    }
    
    delay(600000);
        
     Particle.publish("800854853_Coffee_Is_Ready", "Brew_Executed_Phone");

}

Credits

Vincent Robertson

1 project • 0 followers

Courtney Holland

1 project • 0 followers

Thanks to Let them Brew.

Brew with Light

Things used in this project

Hardware components

Software apps and online services

Story

Schematics

Photoresistor

Servo Motor

Code

Photoresistor

Motor

Credits

Vincent Robertson

Courtney Holland

Comments

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Brew with Light

Brew with Light

Things used in this project

Hardware components

Software apps and online services

Story

Schematics

Photoresistor

Servo Motor

Code

Photoresistor

Motor

Credits

Vincent Robertson

Courtney Holland

Comments