Code<\/h2>\n\/*\r\nMorning Insurance: Assistive Device for Yourself, Project 2\r\nBy: Andres Montemayor\r\n\r\nDescription: The code below does five seperate things.\r\nThe first would be to set the alarm. By reading two seperate potentiometer inputs, it maps their values\r\nonto a 24 hour time schedule and displays that alarm time on an I2C LCD module\r\nThe second is it reads the current time from an RTC module and also displays that on the I2C Module,\r\nThe third is it only turns on the backlight of a LCD screen for a predescribed length of time when button 1\r\nis pressed.\r\nThe fourth is it unlocks a solenoid for a predetermined length of time when button 2 is pressed.\r\nThe fifth is when the current hour and minute on the clock is equal to the hour and minute set in the alarm\r\nit triggers a speaker to make noise until that is no longer true. IE when the alarm changes or the minute\r\nchanges.\r\n\r\nPin Map:\r\npin | mode | description\r\n\r\nPOT1_PIN | input | potentiometer: sets alarm hour\r\nPOT2_PIN | input | potentiometer: sets alarm minute\r\nbuttonPin | input | reads when arcade button pressed, triggers backlight on LCD screen\r\nlockButton | input | reads when arcade button pressed, unlocks solenoid\r\nSPEAKER_PIN1 | output | outputs sound at 400 Hz while alarm is triggered\r\nSOLE_PIN | output | unlocks door, high or low to control if open or closed\r\nSQL | OUTPUT\/INPUT | lcd and rtc go in here\r\nSDA | OUTPUT\/INPUT | lcd and rtc go in here\r\n\r\nCredit:\r\nUsed chatGPT to assist in writing code for controlling wheather or not the backlight should be on\r\nIE lines 99 through 111.\r\nUsed example code from course website for I2C lcd displays available at\r\nthis website:https:\/\/courses.ideate.cmu.edu\/60-223\/s2023\/tutorials\/I2C-lcd,\r\nand example code from RTC, ds3231, to help write relevent sections\r\nUsed library from adafruit on RTC_DS3231 available at this website:https:\/\/github.com\/adafruit\/RTClib\r\n*\/\r\n\r\n\r\n\/\/modules to control different subsystems\r\n#include <Wire.h>\r\n#include <LiquidCrystal_I2C.h>\r\n#include <RTClib.h>\r\n\r\n\/\/Initialize the LCD library with the I2C address, number of columns and rows. call it lcd\r\nLiquidCrystal_I2C lcd(0x27, 16, 2);\r\n\r\n\/\/ Initialize the RTC module object and call it rtc to control from now on\r\nRTC_DS3231 rtc; \r\n\r\n\/\/ Initialize the pins for the potentiometers, buttons, speaker, and solenoid\r\nconst int POT1_PIN = A0;\r\nconst int POT2_PIN = A1;\r\nconst int SPEAKER_PIN1 = 9;\r\nconst int buttonPin = 2;\r\nconst int lockButton = 5;\r\nconst int SOLE_PIN =11;\r\n\r\n\/\/Initialize variables used throughout code for time, timers, and bools\r\nbool isButtonPressed = false;\r\nbool isLightOn = false;\r\nbool isDoorOpen = false;\r\n\r\nint alarm_hour = 0;\r\nint alarm_minute = 0;\r\n\r\nunsigned long lastOnTime = 0;\r\nunsigned long lastUnlockTime = 0;\r\n\r\nvoid setup() {\r\n \/\/ Initialize the LCD display\r\n lcd.init();\r\n\r\n \/\/ Initialize the RTC module\r\n Wire.begin();\r\n rtc.begin();\r\n\r\n \/\/ Set the current time, only do if need to replace battery in RTC module.\r\n \/\/rtc.adjust(DateTime(2023, 2, 27, 9, 50, 00)); \/\/year,month,day,hour,min,sec\r\n\r\n \/\/ Set the pins for the potentiometers, vibrator, speaker and solenoid\r\n pinMode(buttonPin, INPUT);\r\n pinMode(POT1_PIN, INPUT);\r\n pinMode(POT2_PIN, INPUT);\r\n pinMode(SPEAKER_PIN1, OUTPUT);\r\n pinMode(lockButton,INPUT);\r\n pinMode(SOLE_PIN,OUTPUT);\r\n}\r\n\r\nvoid loop() {\r\n \/\/if button pressed open solenoid and start a timer\r\n if (digitalRead(lockButton) == LOW) {\r\n lastUnlockTime = millis();\r\n isDoorOpen = true;\r\n digitalWrite(SOLE_PIN,HIGH);\r\n }\r\n \/\/if 15 seconds have passed close solenoid\r\n if (millis()-lastUnlockTime >= 15000) {\r\n digitalWrite(SOLE_PIN,LOW);\r\n }\r\n \/\/if button pressed and backlight off, turn it on and start a timer\r\n if (digitalRead(buttonPin) == LOW && !isLightOn) {\r\n isButtonPressed = true;\r\n lastOnTime = millis();\r\n lcd.backlight();\r\n isLightOn = true;\r\n }\r\n\r\n \/\/ Check if the LCD screen is on and the timer is off\r\n if (isButtonPressed && (millis() - lastOnTime) >= 20000) {\r\n lcd.noBacklight();\r\n isButtonPressed = false;\r\n isLightOn = false;\r\n }\r\n\r\n \/\/ Print the current time to the LCD display\r\n DateTime now = rtc.now();\r\n lcd.setCursor(0, 0);\r\n lcd.print(now.hour(), DEC);\r\n lcd.print(\":\");\r\n if (now.minute() < 10) {\r\n lcd.print(\"0\");\r\n }\r\n lcd.print(now.minute(), DEC);\r\n lcd.print(\":\");\r\n if (now.second() < 10) {\r\n lcd.print(\"0\");\r\n }\r\n lcd.print(now.second(), DEC);\r\n\r\n \/\/ Read the values of the potentiometers to set the alarm\r\n int pot1_value = analogRead(POT1_PIN);\r\n int pot2_value = analogRead(POT2_PIN);\r\n alarm_hour = map(pot1_value, 0, 1023, 0, 23);\r\n alarm_minute = map(pot2_value, 0, 1023, 0, 59);\r\n\r\n \/\/ Print the alarm time to the LCD display\r\n lcd.setCursor(0, 1);\r\n lcd.print(\"Alarm: \");\r\n if (alarm_hour < 10) {\r\n lcd.print(\"0\");\r\n }\r\n lcd.print(alarm_hour);\r\n lcd.print(\":\");\r\n if (alarm_minute < 10) {\r\n lcd.print(\"0\");\r\n }\r\n lcd.print(alarm_minute);\r\n\r\n \/\/ Check if the current time matches the alarm time\r\n if (now.hour() == alarm_hour && now.minute() == alarm_minute) {\r\n \/\/ Activate the speaker\r\n tone(SPEAKER_PIN1, 440, 0);\r\n }\r\n else {\r\n \/\/otherwise turn off speaker\r\n noTone(SPEAKER_PIN1);\r\n }\r\n}\r\n<\/pre>\n <\/p>\n","protected":false},"excerpt":{"rendered":"
By Andres Montemayor A non-destructive attachment to a campus bed that includes a clock, alarm, shelf, and lockable compartment to prevent use of phone in bed. Demonstration of…<\/p>\n","protected":false},"author":37,"featured_media":17586,"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\/s2023\/work\/wp-json\/wp\/v2\/posts\/17583"}],"collection":[{"href":"https:\/\/courses.ideate.cmu.edu\/60-223\/s2023\/work\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/courses.ideate.cmu.edu\/60-223\/s2023\/work\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/courses.ideate.cmu.edu\/60-223\/s2023\/work\/wp-json\/wp\/v2\/users\/37"}],"replies":[{"embeddable":true,"href":"https:\/\/courses.ideate.cmu.edu\/60-223\/s2023\/work\/wp-json\/wp\/v2\/comments?post=17583"}],"version-history":[{"count":18,"href":"https:\/\/courses.ideate.cmu.edu\/60-223\/s2023\/work\/wp-json\/wp\/v2\/posts\/17583\/revisions"}],"predecessor-version":[{"id":17616,"href":"https:\/\/courses.ideate.cmu.edu\/60-223\/s2023\/work\/wp-json\/wp\/v2\/posts\/17583\/revisions\/17616"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/courses.ideate.cmu.edu\/60-223\/s2023\/work\/wp-json\/wp\/v2\/media\/17586"}],"wp:attachment":[{"href":"https:\/\/courses.ideate.cmu.edu\/60-223\/s2023\/work\/wp-json\/wp\/v2\/media?parent=17583"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/courses.ideate.cmu.edu\/60-223\/s2023\/work\/wp-json\/wp\/v2\/categories?post=17583"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/courses.ideate.cmu.edu\/60-223\/s2023\/work\/wp-json\/wp\/v2\/tags?post=17583"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}