Discussion<\/strong><\/h3>\nOverall, I was proud of the final product of this project, as the core functionality from the ideation was fully implemented, and the desired aesthetic design was achieved.<\/p>\n
I was pleasantly surprised at how well the appearance turned out. Compared to physical fabrication, I was a lot more confident in the software implementation and electrical wiring. As someone with no experience with fabrication ever, I was dreading making the outer box for the project, and I was prepared for some degree of failure. But after warming up and experimenting with the laser cutting machine for a while, the process of fabrication went much smoother and quicker than I anticipated, and I really enjoyed it. I would definitely use this newly acquired skill in fabrication in the final project and some personal projects as well.<\/p>\n
Regarding the in-class review and criticism, I totally agree with the following one: “It seems a bit bulky for something sitting on your desk.” <\/span>This was my thought as well after assembling the box. I overestimated the space that the wiring would take up and made the box bigger than needed. Although it does not affect the appearance too much, it does cause some nuisance if I were to use this product daily, since it takes up a big chunk of space on my already crowded desk. In the future, I should definitely measure out the space the creation requires in detail, instead of just “eyeballing” how much space it might need.<\/p>\nI also appreciated the comments addressing the aesthetic design, such as “Really nice box and layout of components on the outside. Ah! A face! Cute” and “Looks elegant for your problem and would be a useful incentive to stop working since the lights are so bright.” One of the invited guests from that lecture also stared at the box for quite a while and told me that he “loves the little face”. The fact that the aesthetic design drew a lot of attention actually inspired me to improve the appearance a little bit more before documentation, adding a touch of yellow eyes and red cheeks to “humanize” the box even more.\u00a0 (<\/span>Special thanks to Nathan for the suggestion of adding the pink cheeks. Absolutely phenomenal. )<\/p>\nI might build a more compact version of this product in the future, with more compact wiring, a smaller Arduino board, and a reduced-sized outer box. This would be a lot more practical to be used more often. In addition, this time I would actually model the disposed “King Arthur”, just to experiment with 3D printing a little bit.<\/p>\n
Functional Block Diagram<\/strong><\/h3>\n![\"\"](\"https:\/\/courses.ideate.cmu.edu\/60-223\/f2021\/work\/wp-content\/uploads\/2021\/11\/Schematic-Graph.jpg\")
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Schematic Diagram<\/strong><\/h3>\n![\"\"](\"https:\/\/courses.ideate.cmu.edu\/60-223\/f2021\/work\/wp-content\/uploads\/2021\/11\/block.jpg\")
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Code<\/strong><\/h3>\n\/*\r\n * Mooonster Timer Box\r\n * \r\n * Creator: Bella Liu\r\n * \r\n * Description:\r\n * The project functions as a timer.\r\n * The user can adjust the input time using the potentiometer.\r\n * Once the time is adjusted, the user can press the start button to enter \"timing session\"\r\n * The timer would then start, with the remaining time displayed on LCD screen.\r\n * The ring of lights would light up, showing how much time has passed since the timer started.\r\n * Once the count down is finished, the ring of lights would flash intense red lights,\r\n * and the LCD screen would warn the user to put down the pen.\r\n * The user must push the pen down the little hole on top to trigger the FSR, thus resetting the timer.\r\n *\r\n * Pin Mapping Table:\r\n * \r\n * Arduino pin | description\r\n * ------------|-------------\r\n * A0 FSR (output)\r\n * A2 Potentiometer (input)\r\n * 2 Tactile Button Switch (input)\r\n * 6 NeoPixel Ring (input)\r\n * SDA SDA pin - LCD display (input)\r\n * SCL SCL pin - LCD display (input)\r\n *\r\n *\/\r\n\r\n\r\n#include <Adafruit_NeoPixel.h>\r\n#include <LiquidCrystal_I2C.h>\r\n\r\n\/\/ Initializations for pins\r\nconst int FSR_PIN = A0;\r\nconst int POT_PIN = A2;\r\nconst int BUTTON_PIN = 2;\r\nconst int NEO_PIN = 6;\r\n\r\nconst int NUMPIXELS = 24; \/\/ Popular NeoPixel ring size\r\n\r\n\/\/ The state of the tactile button\r\nbool buttoned = LOW;\r\n\/\/ Indicates whether the timer is in session\r\nbool activated = LOW;\r\n\/\/ The potentiometer value\r\nint potVal = 0;\r\n\/\/ The number of lights lit up in the ring\r\nint lighted = 0;\r\n\r\n\/\/ Variables\r\nunsigned long lightTimer = 0;\r\nconst int lightWait = 500;\r\n\r\nunsigned long LCDtimer = 0;\r\nconst int LCDwait = 500;\r\nbool LCDstate = LOW;\r\n\r\nunsigned long warningTimer = 0;\r\nconst int warningWait = 500;\r\nbool warningState = LOW;\r\n\r\n\/\/ Initialization of LCD and NeoPixel\r\nLiquidCrystal_I2C screen(0x27, 16, 2);\r\nAdafruit_NeoPixel pixels(NUMPIXELS, NEO_PIN, NEO_GRB + NEO_KHZ800);\r\n\r\nvoid setup() {\r\n\r\n pixels.begin();\r\n pinMode(POT_PIN, INPUT);\r\n pinMode(BUTTON_PIN, INPUT);\r\n pinMode(FSR_PIN, OUTPUT); \r\n Serial.begin(9600);\r\n screen.init();\r\n screen.backlight();\r\n\r\n \/\/welcome smiley face\r\n screen.setCursor(7,1);\r\n screen.print(\"vv\"); \r\n delay(5000);\r\n\r\n screen.home();\r\n}\r\n\r\nvoid loop() {\r\n \r\n buttoned = digitalRead(BUTTON_PIN);\r\n if (buttoned == HIGH) activated = HIGH;\r\n int minuteMin = 1;\r\n int minuteMax = 60;\r\n long interMin = 2500;\r\n long interMax = 150000;\r\n\r\n \/\/ Mapping the potentiometer value to 1-60 minutes\r\n int minute = map(potVal, 0, 1023, minuteMin, minuteMax);\r\n \/\/ Mapping 1-60 minutes to appropriate intervals for each light to light up\r\n unsigned int interval = map(minute, minuteMin, minuteMax, interMin, interMax); \r\n \r\n \/\/User is adjusting timer input\r\n if (activated == LOW)\r\n {\r\n pixels.clear();\r\n pixels.show(); \r\n lighted = 0;\r\n \r\n potVal = analogRead(A2);\r\n \r\n \/\/ Display the chosen time\r\n if ( (millis() - LCDtimer) >= LCDwait ) {\r\n screen.clear();\r\n screen.print(\"timer for:\");\r\n screen.setCursor(0,1);\r\n screen.print(minute); \r\n LCDtimer = millis();\r\n }\r\n \r\n }\r\n \r\n \/\/The button has been pressed, enter \"timing session\"\r\n else\r\n { \r\n pixels.clear(); \/\/ Set all pixel colors to 'off'\r\n\r\n unsigned long current = millis();\r\n\r\n \/\/If time is up, stay in warning state\r\n if (lighted >= NUMPIXELS){\r\n\r\n \/\/ If FSR is triggered, exit warning state and return to user time adjustment phase\r\n if (analogRead(FSR_PIN) > 5) activated = LOW;\r\n \r\n if ( (millis() - warningTimer) >= warningWait ) {\r\n warningState = !warningState;\r\n warningTimer = millis();\r\n } \r\n \r\n \/\/ Flash red light\r\n if (warningState == HIGH) { \r\n for (int i = 0; i < NUMPIXELS; i++){\r\n pixels.setPixelColor(i, pixels.Color(255, 0, 0));\r\n }\r\n }\r\n pixels.show();\r\n\r\n \/\/ Display warning messages\r\n if ( (millis() - LCDtimer) >= LCDwait ) {\r\n screen.clear();\r\n screen.print(\"STOP! PEN DOWN!\"); \r\n LCDtimer = millis();\r\n }\r\n \r\n }\r\n \r\n \/\/ For RGB values\r\n int green = 240;\r\n int blue = 0; \r\n int red = 0;\r\n\r\n \/\/If time is not up, light up the lights accordingly\r\n while (lighted < NUMPIXELS){\r\n \r\n if ( (millis() - lightTimer) >= interval) {\r\n\r\n \/\/ Change the color of the each light\r\n blue += 10;\r\n green -= 10;\r\n red += 5;\r\n=\r\n pixels.setPixelColor(lighted, pixels.Color(red, green, blue));\r\n lighted ++;\r\n lightTimer = millis();\r\n }\r\n pixels.show();\r\n\r\n \/\/ Calculate the times\r\n int passedSec = ((millis()-current)\/1000);\r\n int displaySec = passedSec % 60;\r\n int passedMin = passedSec \/ 60;\r\n\r\n \/\/ Display the timez on LCD screen\r\n if ( (millis() - LCDtimer) >= LCDwait ) {\r\n screen.clear();\r\n screen.print(\"Total\");\r\n screen.setCursor(0,1);\r\n screen.print(minute); \r\n screen.setCursor(6,0);\r\n screen.print(\"Counting\"); \r\n screen.setCursor(6,1);\r\n screen.print(passedMin);\r\n screen.setCursor(8,1);\r\n screen.print(\":\"); \r\n screen.setCursor(9,1);\r\n screen.print(displaySec); \r\n LCDtimer = millis();\r\n } \r\n } \r\n } \r\n}<\/pre>\n <\/p>\n","protected":false},"excerpt":{"rendered":"
The “Mooonster Timer Box” functions as a timer for a quick sketch\/timed exam session. Images Video Demonstration of the Usage * Timer has been sped up for demo…<\/p>\n","protected":false},"author":200,"featured_media":14365,"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\/f2021\/work\/wp-json\/wp\/v2\/posts\/14339"}],"collection":[{"href":"https:\/\/courses.ideate.cmu.edu\/60-223\/f2021\/work\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/courses.ideate.cmu.edu\/60-223\/f2021\/work\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/courses.ideate.cmu.edu\/60-223\/f2021\/work\/wp-json\/wp\/v2\/users\/200"}],"replies":[{"embeddable":true,"href":"https:\/\/courses.ideate.cmu.edu\/60-223\/f2021\/work\/wp-json\/wp\/v2\/comments?post=14339"}],"version-history":[{"count":22,"href":"https:\/\/courses.ideate.cmu.edu\/60-223\/f2021\/work\/wp-json\/wp\/v2\/posts\/14339\/revisions"}],"predecessor-version":[{"id":14428,"href":"https:\/\/courses.ideate.cmu.edu\/60-223\/f2021\/work\/wp-json\/wp\/v2\/posts\/14339\/revisions\/14428"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/courses.ideate.cmu.edu\/60-223\/f2021\/work\/wp-json\/wp\/v2\/media\/14365"}],"wp:attachment":[{"href":"https:\/\/courses.ideate.cmu.edu\/60-223\/f2021\/work\/wp-json\/wp\/v2\/media?parent=14339"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/courses.ideate.cmu.edu\/60-223\/f2021\/work\/wp-json\/wp\/v2\/categories?post=14339"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/courses.ideate.cmu.edu\/60-223\/f2021\/work\/wp-json\/wp\/v2\/tags?post=14339"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
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