https:\/\/courses.ideate.cmu.edu\/60-223\/f2022\/work\/wp-content\/uploads\/2022\/10\/use-of-the-thing-1.mp4<\/a><\/video><\/div>\nProcess<\/h3>\n
I wouldn\u2019t say that there were significant milestones within the project, as from the beginning I had a good idea of the steps I needed to take. I would say that I broke the project down into smaller parts, however.\u00a0<\/span><\/p>\nFirst, I got the LCD display to count down values according to a Pomodoro timer. This, in my opinion, was the most challenging part, as my software skills aren\u2019t particularly strong, and I had to manipulate some event timers to get it to work. I combined that with a potentiometer, and I had a changeable Pomodoro display.\u00a0<\/span><\/p>\nThen, I did some wrestling with the IR sensor, and after the hardware challenges I had to figure out with the resistors, and non-functional IR sensors, I included the distance value to my LCD display.\u00a0<\/span><\/p>\nThe final step was adding a buzzer, which wasn\u2019t particularly challenging hardware nor software wise, and incorporating my electronics with my laser cut phone stand, which I had completed beforehand.\u00a0<\/span><\/p>\nProcess Images<\/h3>\n![\"\"](\"https:\/\/courses.ideate.cmu.edu\/60-223\/f2022\/work\/wp-content\/uploads\/2022\/10\/35ecf0d9418e408db97482f6a1db21ea-0001-scaled-e1666839843318.jpg\")
Ideation sketches for the laser cutting component of the phone stand.<\/p><\/div>\n
![\"\"](\"https:\/\/courses.ideate.cmu.edu\/60-223\/f2022\/work\/wp-content\/uploads\/2022\/10\/process_1-scaled.jpg\")
Trying (unsuccessfully) to get potentiometer + IR sensor + LCD all working in conjunction<\/p><\/div>\n
![\"\"](\"https:\/\/courses.ideate.cmu.edu\/60-223\/f2022\/work\/wp-content\/uploads\/2022\/10\/process_2-scaled.jpg\")
Functioning electronics of the IR sensor.<\/p><\/div>\n
Discussion<\/h3>\n
I would say that overall, I think my project went about as well as I expected it to go.\u00a0<\/span><\/p>\nOne critique I received was that the phone stand might be improved if \u201cthe wires and electronics\u00a0 were hidden in some type of enclosure\u201d, and I would say that I definitely agree with that comment, as the back of the phone stand worked, but didn\u2019t look very nice. When I was designing my device, the aesthetics were one of my last considerations, and I simply thought that by hiding all the wires behind the phone stand, to the user, the wiring wouldn\u2019t be too obvious and not that much of a concern. While I think that held true, looking back, when I laser cut my phone stand, I could have easily incorporated some sort of box to store my electronics. Though I don\u2019t expect to make another iteration of this project, if I were to make another phone stand, I would probably include some sort of box to store the electronics behind the phone stand, and I would also recut my cutouts for the LCD display\/potentiometer to the correct measurements. Most of my focus in this project focused on the technical elements of the project, as I thought that my limitations in coding and hardware would make the project a bit challenging for me. With the help of Zach, I learned how to laser cut, and the coding wasn\u2019t as challenging as I thought it would be, as using the event loops and different conditions, I managed to make a semi-working phone stand. Though my code did have bugs, it was mostly functional, so I was quite pleasantly surprised with my skills.\u00a0<\/span><\/p>\nAnother comment I received during the critique stated \u201cThe distance sensor was very accurate and the design as simple yet effective\u201d, which I appreciated. Lots of comments commented on the simplicity and cleanliness of my design, and I would also agree with those comments. All in all, I think I learned a lot from this project, as it allowed me to build my skills with software as well as prototyping, and laser cutting. I think the idea I had from the beginning was pretty straightforward, and I had a good vision for what I needed to accomplish and reasonable expectations for myself, which contributed to the successes of my project. <\/span><\/p>\nSchematic Diagram<\/h3>\n
![\"\"](\"https:\/\/courses.ideate.cmu.edu\/60-223\/f2022\/work\/wp-content\/uploads\/2022\/10\/Electronic-Schematic-Proj-2.jpg\")
<\/p>\n
Block Diagram<\/h3>\n![\"\"](\"https:\/\/courses.ideate.cmu.edu\/60-223\/f2022\/work\/wp-content\/uploads\/2022\/10\/Proj-2-Block.jpg\")
<\/h3>\nCode<\/h3>\n\/*\r\n * Pomodoro Productivity Phone Stand\r\n * Frances Adiwijaya\r\n * \r\n * Description: \r\n * \r\n * This code controls the arduino behind a pomodoro phone stand. \r\n * It will display, on an LCD, the work\/break time left in varying\r\n * pomodoro intervals, changeable by a potentiometer. \r\n * It will also use a speaker to beep when the phone is far from an \r\n * IR sensor, and the LCD will display a message to tell the user\r\n * to return the phone to the phone stand\r\n * \r\n * Pin Mapping: \r\n * \r\n * Arduino Pin | Description\r\n * ------------------------------\r\n * A0 | Potentiometer \r\n * A3 | Infrared Sensor\r\n * 6 | Buzzer\r\n * SDA | SDA pin on LCD\r\n * SCL | SCL pin on LCD \r\n * \r\n * Sources: \r\n * \r\n * LCD Code: \r\n * https:\/\/courses.ideate.cmu.edu\/60-223\/f2022\/tutorials\/I2C-lcd\r\n * IR Code: \r\n * https:\/\/courses.ideate.cmu.edu\/60-223\/f2022\/tutorials\/IR-proximity-sensor\r\n * Event Timer Code: \r\n * https:\/\/courses.ideate.cmu.edu\/60-223\/f2022\/tutorials\/code-bites#blink-without-blocking\r\n * Buzzer Code:\r\n * https:\/\/create.arduino.cc\/projecthub\/SURYATEJA\/use-a-buzzer-module-piezo-speaker-using-arduino-uno-89df45\r\n * \r\n *\/\r\n\r\n\/\/import necessary libraries\r\n#include <Wire.h>\r\n#include <LiquidCrystal_I2C.h>\r\n\r\nLiquidCrystal_I2C screen(0x27, 16, 2);\r\n\r\n\/\/ set up the (constant) variables\r\n\/\/ for the mode: work = 0, break = 1, longbreak = 2\r\nint mode = 0;\r\nint breakcount = 0;\r\nunsigned long workTimer = 0;\r\nunsigned long breakTimer = 0;\r\nunsigned long longbreakTimer = 0;\r\nunsigned long updateTimer = 0;\r\nlong UPDATEWAIT = 1000;\r\nconst int POTPIN = A0;\r\nconst int IRPIN = A3;\r\nlong interval = 1000;\r\nlong BREAKWAIT = 0;\r\nlong WORKWAIT = 0;\r\nlong LONGBREAKWAIT = 0;\r\nint breakcounter = BREAKWAIT \/ 1000;\r\nint workcounter = WORKWAIT \/ 1000;\r\nint longbreakcounter = LONGBREAKWAIT \/ 1000;\r\nconst int BUZZERPIN = 6;\r\n\r\n\r\n\/\/ initialize screen and pins\r\nvoid setup() {\r\n \/\/ put your setup code here, to run once:\r\n pinMode(POTPIN, INPUT);\r\n pinMode(IRPIN, INPUT);\r\n Serial.begin(9600);\r\n Serial.println(\"starting...\");\r\n screen.init();\r\n screen.backlight();\r\n pinMode(BUZZERPIN, OUTPUT);\r\n\r\n}\r\n\r\nvoid loop() {\r\n \/\/ check the value of the potentiometer and map it to the time intervals\r\n unsigned long potVal;\r\n potVal = analogRead(POTPIN);\r\n potVal = map(potVal, 0, 1023, 1000, 30000);\r\n unsigned long breaktime = potVal \/ 5;\r\n\r\n int distanceVal = analogRead(IRPIN);\r\n Serial.println(distanceVal);\r\n\r\n \/\/ create the pomodoro intervals\r\n BREAKWAIT = breaktime;\r\n WORKWAIT = potVal;\r\n LONGBREAKWAIT = breaktime * 4;\r\n\r\n\r\n\r\n \/\/ put your main code here, to run repeatedly:\r\n \/\/ if we're in break mode:\r\n if (mode == 1) {\r\n \/\/ if the break timer is up enter the statement\r\n if ((millis() - breakTimer >= BREAKWAIT)) {\r\n Serial.println(\"switching to work\");\r\n \/\/ increment the short break count\r\n breakcount += 1;\r\n \/\/ reset all timers\r\n longbreakTimer = millis();\r\n workTimer = millis();\r\n breakTimer = millis();\r\n \/\/ recheck the intervals\r\n breakcounter = BREAKWAIT \/ 1000;\r\n workcounter = WORKWAIT \/ 1000;\r\n longbreakcounter = LONGBREAKWAIT \/ 1000;\r\n \/\/ switch to work mode\r\n mode = 0;\r\n }\r\n \/\/ update the LCD display every second, and count down\r\n if ((millis() - updateTimer >= UPDATEWAIT)) {\r\n screen.clear();\r\n screen.setCursor(0, 0);\r\n screen.print(\"break: \");\r\n breakcounter = breakcounter - 1;\r\n Serial.println(breakcounter);\r\n screen.print(breakcounter+1);\r\n updateTimer = millis();\r\n }\r\n }\r\n \/\/ if we're in work mode:\r\n if (mode == 0) {\r\n \/\/ if the work timer is up\r\n if ((millis() - workTimer >= WORKWAIT)) {\r\n \/\/check if we're on a break or a long break\r\n \/\/if next is a longbreak, enter the statement\r\n if (breakcount > 3) {\r\n Serial.println(\"switching to longbreak\");\r\n \/\/ reset all timers\r\n longbreakTimer = millis();\r\n workTimer = millis();\r\n breakTimer = millis();\r\n breakcounter = BREAKWAIT \/ 1000;\r\n workcounter = WORKWAIT \/ 1000;\r\n longbreakcounter = LONGBREAKWAIT \/ 1000;\r\n \/\/ switch to longbreak mode\r\n mode = 2;\r\n }\r\n \/\/if next is a regular break, enter the statement\r\n else {\r\n Serial.println(\"switching to break\");\r\n \/\/ reset all timers\r\n longbreakTimer = millis();\r\n workTimer = millis();\r\n breakTimer = millis();\r\n breakcounter = BREAKWAIT \/ 1000;\r\n workcounter = WORKWAIT \/ 1000;\r\n longbreakcounter = LONGBREAKWAIT \/ 1000;\r\n \/\/ switch to break mode\r\n mode = 1;\r\n }\r\n }\r\n \/\/ if the IR distance sensor registers a value too large, enter the loop\r\n if ((distanceVal < 200)) {\r\n \/\/ display a message on the LCD\r\n screen.clear();\r\n screen.setCursor(0, 0);\r\n screen.print(\"Put Phone Back!\");\r\n Serial.println(\"IR Val\");\r\n Serial.println(distanceVal);\r\n \/\/ beep the buzzer\r\n delay(200);\r\n tone(BUZZERPIN, 1000); \/\/ Send 1KHz sound signal...\r\n delay(1000); \/\/ ...for 1 sec\r\n noTone(BUZZERPIN); \/\/ Stop sound...\r\n delay(1000); \/\/ ...for 1sec\r\n }\r\n \/\/ update LCD to count down every second\r\n if ((millis() - updateTimer >= UPDATEWAIT)) {\r\n screen.clear();\r\n screen.setCursor(0, 0);\r\n screen.print(\"work: \");\r\n workcounter = workcounter - 1;\r\n Serial.println(workcounter);\r\n screen.print(workcounter);\r\n updateTimer = millis();\r\n }\r\n }\r\n \/\/ if we're in longbreak mode\r\n if (mode == 2) {\r\n \/\/ if the timer is over, enter the statement\r\n if (millis() - longbreakTimer >= LONGBREAKWAIT) {\r\n Serial.println(\"switching to work\");\r\n \/\/ reset the breakcount\r\n breakcount = 0;\r\n \/\/ reset all timers\r\n longbreakTimer = millis();\r\n workTimer = millis();\r\n breakTimer = millis();\r\n breakcounter = BREAKWAIT \/ 1000;\r\n workcounter = WORKWAIT \/ 1000;\r\n longbreakcounter = LONGBREAKWAIT \/ 1000;\r\n \/\/ switch to work mode\r\n mode = 0;\r\n }\r\n \/\/ count down on LCD\r\n if ((millis() - updateTimer >= UPDATEWAIT)) {\r\n screen.clear();\r\n screen.setCursor(0, 0);\r\n screen.print(\"long break: \");\r\n longbreakcounter = longbreakcounter - 1;\r\n Serial.println(longbreakcounter);\r\n screen.print(longbreakcounter+1);\r\n updateTimer = millis();\r\n }\r\n }\r\n}<\/pre>\n <\/p>\n","protected":false},"excerpt":{"rendered":"
I created a phone stand that helps me stay focused when I should be working, making sure I’m not using my phone by emitting an annoying beep when…<\/p>\n","protected":false},"author":227,"featured_media":16416,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[89],"tags":[],"_links":{"self":[{"href":"https:\/\/courses.ideate.cmu.edu\/60-223\/f2022\/work\/wp-json\/wp\/v2\/posts\/16378"}],"collection":[{"href":"https:\/\/courses.ideate.cmu.edu\/60-223\/f2022\/work\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/courses.ideate.cmu.edu\/60-223\/f2022\/work\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/courses.ideate.cmu.edu\/60-223\/f2022\/work\/wp-json\/wp\/v2\/users\/227"}],"replies":[{"embeddable":true,"href":"https:\/\/courses.ideate.cmu.edu\/60-223\/f2022\/work\/wp-json\/wp\/v2\/comments?post=16378"}],"version-history":[{"count":13,"href":"https:\/\/courses.ideate.cmu.edu\/60-223\/f2022\/work\/wp-json\/wp\/v2\/posts\/16378\/revisions"}],"predecessor-version":[{"id":16534,"href":"https:\/\/courses.ideate.cmu.edu\/60-223\/f2022\/work\/wp-json\/wp\/v2\/posts\/16378\/revisions\/16534"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/courses.ideate.cmu.edu\/60-223\/f2022\/work\/wp-json\/wp\/v2\/media\/16416"}],"wp:attachment":[{"href":"https:\/\/courses.ideate.cmu.edu\/60-223\/f2022\/work\/wp-json\/wp\/v2\/media?parent=16378"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/courses.ideate.cmu.edu\/60-223\/f2022\/work\/wp-json\/wp\/v2\/categories?post=16378"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/courses.ideate.cmu.edu\/60-223\/f2022\/work\/wp-json\/wp\/v2\/tags?post=16378"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}