Discussion

Critique 1: "It’s fun to have those decorations. It is clear and useful, very direct to its proposal. seems dangerously wobbly"

Critique 2: "This project is dope. Its seems super useful and definetly fits the project requirements of it wouldn’t necessary help everyone, as not everyone drinks coffee, but for an avid coffee drinker like yourself it seems incredibly useful."

In response to Critique 1: It was dangerously wobbly! It seems from the final critique, Mr. Coffee is indeed prone to falling over. I attempted to account for this with counterweights, explaining the belt of marbles that he has. This has helped cases but could be a better fix. A better fix would be to have a more extensive base to go over the ceramic ground bean holder; however, that could introduce new problems. A perfect solution would be to have the ground beans and filter in one system with the hardware.

In response to Critique 2: I agree that the functionality is limited to coffee, mainly because it was hard-engineered to that specific drip coffee mug thingy. In theory, though, as a mechanism that pours water after it gets hot enough, you could use this for different uses like tea or instant ramen. While the functionality may be questioned, you could use it for other things, but it is best to use it for what it was intended to do.

As for what I think about the project, I am happy with what I pulled off. I delayed the hardware portion because it seemed daunting at first, but in the end, I enjoyed how digestible everything was when I did it in parts. I am also happy that I could debug the code to have a working product. Honestly, with much more premeditated effort, this project could have had a cleaner implementation, but there is also the argument that his charm comes from the very apparent impulsive and rash decisions. Overall though, I feel like this project fine tuned my physical computing abilities in various areas, such as hardwiring, coding, fabricating, and debugging. 

I wouldn't expect myself to build any further implementations of this project. I am happy with how it works, but as one of the in-class critiquers warned: The maintenance would be deadly.  

Code

//CITATIONS

//https://www.instructables.com/How-to-use-a-Push-Button-Arduino-Tutorial/

//https://docs.arduino.cc/learn/electronics/servo-motors

//

//SMALL BLURB

//This code is the core of Mr. Coffee! It controls a water pump and a temperature sensor for brewing. The pump circulates water through custom-fit acrylic tubemed 

//in the loop. The temperature sensor ensures water heats to the ideal temperature for brewing. Activation is via a tactile button, and a servo motor manages the pouring, rotating

//180 degrees in both directions for even distribution. The code uses the OneWire and DallasTemperature libraries for sensor readings and the Servo library for motor operations.

//A potentiometer adjusts brewing time.  Enjoy Mr. Coffee!

//

// PIN MAPPING

// ONE_WIRE_BUS: Digital Pin 4 - Dallas Temperature sensor

// signalA: Digital Pin 3 - Water pump control

// signalB: Digital Pin 6 - Water pump control

// buttPin: Digital Pin 2 - Tactile button

// potPin: Analog Pin A0 - Potentiometer

// Servo Control: Digital Pin 9 - Servo motor

#include <OneWire.h>

#include <DallasTemperature.h>

#include <Servo.h>

#define ONE_WIRE_BUS 4

OneWire oneWire(ONE_WIRE_BUS);

DallasTemperature sensors(&oneWire);

//initialze global variables

Servo myservo;

int pos = 0;

const int signalA = 3;

const int signalB = 6;

const int potPin = A0;

const int buttPin = 2;

int startTime;

void setup(void) {

  Serial.begin(9600);

  sensors.begin();

  myservo.attach(9);

  pinMode(signalA, OUTPUT);

  pinMode(signalB, OUTPUT);

  pinMode(potPin, INPUT);

  pinMode(buttPin, INPUT);

}

void loop(void) {

//get temperatures first

    sensors.requestTemperatures();

    Serial.print("Celsius temperature: ");

    Serial.print(sensors.getTempCByIndex(0));

    Serial.print(" - Fahrenheit temperature: ");

    Serial.println(sensors.getTempFByIndex(0));

    int potVal = analogRead(potPin);

    int buttState = digitalRead(buttPin);

    static int turnOn = 0;

    Serial.println(buttState);

    Serial.println(potVal);

    if (buttState == 1 && turnOn == 0) {

        turnOn = 1;

    }

    if (turnOn == 1) {

        while (sensors.getTempCByIndex(0) < 95 || sensors.getTempFByIndex(0) < 200) {

            sensors.requestTemperatures();

            delay(1000);

            Serial.print("Waiting - Celsius temperature: ");

            Serial.print(sensors.getTempCByIndex(0));

            Serial.print(" - Fahrenheit temperature: ");

            Serial.println(sensors.getTempFByIndex(0));

        }

        int duration = potVal * 60;  // Up to 1 minute

        startTime = millis();

        while ((millis() - startTime) < duration) {

            analogWrite(signalA, 255);

            analogWrite(signalB, 0);  // turn water pump on

            // rotating motions

            for (pos = 0; pos <= 180; pos += 1) {

                myservo.write(pos);

                delay(15);

            }

            for (pos = 180; pos >= 0; pos -= 1) {

                myservo.write(pos);

                delay(15);

            }

        }

        turnOn = 0;  // Reset turnOn for next cycle

    }

    analogWrite(signalA, 0);

    analogWrite(signalB, 0);  // turn pump off

}