![\"\"](\"https:\/\/courses.ideate.cmu.edu\/60-223\/s2022\/work\/wp-content\/uploads\/2022\/03\/Screen-Shot-2022-03-16-at-1.45.15-AM.png\")
<\/a>schematic diagram<\/p><\/div>\n
\/* \"Don't Forget Your Things!\" \r\n * \r\n* Catherine Liu\r\n* \r\n* This code is for a device that reminds you to take your things with you in the morning. Each switch is \r\n* wired to an LED and a servo motor rotates when all switches are flipped\r\n* \r\n* Pin Mapping:\r\n* pin | mode | description\r\n* ----|--------|-------------\r\n* 2 . output . servo motor\r\n* 3 . output . LED 1\r\n* 4 . output . LED 2\r\n* 5 . output . LED 3\r\n* 6 . output . LED 4\r\n* 7 . input . ultrasonic ranger trigger pin\r\n* 8 . input . switch 1\r\n* 9 . input . switch 2\r\n* 10 . input . switch 3\r\n* 11 . input . switch 4\r\n* 12 . input . ultrasonic ranger echo pin\r\n* 13 . output . buzzer\r\n* re\r\n* Code Used:\r\n* Robert Zacharias: Displaying data on an I\u00b2C LCD screen (https:\/\/courses.ideate.cmu.edu\/60-223\/s2022\/tutorials\/I2C-lcd)\r\n*\/\r\n\r\n#include <NewPing.h>\r\n#include <Servo.h>\r\n#include <LiquidCrystal_I2C.h> \/\/LCD Display Module library\r\nLiquidCrystal_I2C screen(0x27, 16, 2); \/\/initiate screen\r\n\r\n\r\n\/\/LED pins\r\nconst int LEDPIN1 = 3;\r\nconst int LEDPIN2 = 4;\r\nconst int LEDPIN3 = 5;\r\nconst int LEDPIN4 = 6;\r\n\r\n\/\/switch pins\r\nconst int SWITCHPIN1 = 8;\r\nconst int SWITCHPIN2 = 9;\r\nconst int SWITCHPIN3 = 10;\r\nconst int SWITCHPIN4 = 11;\r\nint switchCount = 0; \/\/\r\n\r\n\/\/buzzer pin\r\nconst int BUZZERPIN = 13;\r\nbool buzzerSound = false;\r\nint buzzerCount = 0;\r\n\r\n\/\/servo pin\r\nServo lidMotor;\r\nconst int MOTORPIN = 2;\r\n\r\n\/\/distance sensor pin\r\n#define TRIGGERPIN 7\r\n#define ECHOPIN 12\r\n#define MAXDISTANCE 200\r\n\r\nNewPing sonar(TRIGGERPIN, ECHOPIN, MAXDISTANCE); \/\/ NewPing setup of pins and maximum distance.\r\n\r\n\/\/boolean for resetting the device\r\nbool switchReset = false;\r\n\r\nvoid setup() {\r\n Serial.begin(115200);\r\n\r\n pinMode(LEDPIN1, OUTPUT);\r\n pinMode(LEDPIN2, OUTPUT);\r\n pinMode(LEDPIN3, OUTPUT);\r\n pinMode(LEDPIN4, OUTPUT);\r\n\r\n pinMode(SWITCHPIN1, INPUT);\r\n pinMode(SWITCHPIN2, INPUT);\r\n pinMode(SWITCHPIN3, INPUT);\r\n pinMode(SWITCHPIN4, INPUT);\r\n\r\n pinMode(BUZZERPIN, OUTPUT);\r\n\r\n lidMotor.attach(MOTORPIN);\r\n lidMotor.write(5);\r\n\r\n screen.init();\r\n screen.backlight();\r\n screen.home();\r\n screen.print(\"Hi!Make sure you\");\r\n screen.setCursor(0,1);\r\n screen.print(\"have everything\");\r\n}\r\n\r\nvoid loop() {\r\n int buttonState1;\r\n int buttonState2;\r\n int buttonState3;\r\n int buttonState4;\r\n\r\n buttonState1 = digitalRead(SWITCHPIN1);\r\n buttonState2 = digitalRead(SWITCHPIN2);\r\n buttonState3 = digitalRead(SWITCHPIN3);\r\n buttonState4 = digitalRead(SWITCHPIN4);\r\n\r\n \/\/checking distance\r\n delay(50);\r\n int distVal = sonar.ping_cm();\r\n Serial.println(distVal);\r\n\r\n \/\/buzzer sounds 3 times max if object is detected\r\n if ((distVal < 30) && (buzzerSound == false)) {\r\n digitalWrite(BUZZERPIN, HIGH);\r\n delay(100);\r\n digitalWrite(BUZZERPIN, LOW);\r\n buzzerCount = buzzerCount + 1;\r\n }\r\n \r\n if (buzzerCount == 3) {\r\n buzzerSound = true;\r\n }\r\n\r\n \/\/switch 1\r\n if (buttonState1 == LOW) {\r\n switchCount = switchCount + 1;\r\n digitalWrite(LEDPIN1, HIGH);\r\n }\r\n if (buttonState1 == HIGH) {\r\n digitalWrite(LEDPIN1, LOW);\r\n }\r\n\r\n \/\/switch 2\r\n if (buttonState2 == LOW) {\r\n digitalWrite(LEDPIN2, HIGH);\r\n }\r\n if (buttonState2 == HIGH) {\r\n digitalWrite(LEDPIN2, LOW);\r\n }\r\n\r\n \/\/switch 3\r\n if (buttonState3 == LOW) {\r\n digitalWrite(LEDPIN3, HIGH);\r\n }\r\n if (buttonState3 == HIGH) {\r\n digitalWrite(LEDPIN3, LOW);\r\n }\r\n\r\n \/\/switch 4\r\n if (buttonState4 == LOW) {\r\n digitalWrite(LEDPIN4, HIGH);\r\n }\r\n if (buttonState4 == HIGH) {\r\n digitalWrite(LEDPIN4, LOW);\r\n }\r\n\r\n \/\/rotate motor, and change LCD text after all switches are flipped\r\n if ((buttonState1 == LOW) && (buttonState2 == LOW) && (buttonState3 == LOW) && (buttonState4 == LOW)) {\r\n screen.clear();\r\n screen.home();\r\n screen.print(\"Goodbye!\");\r\n lidMotor.write(170);\r\n switchReset = true;\r\n\r\n }\r\n \r\n \/\/motor returns to relatch lid\r\n else {\r\n lidMotor.write(70);\r\n }\r\n \r\n \/\/reset buzzer when switches are flipped back\r\n if ((buttonState1 == HIGH) && (buttonState2 == HIGH) && (buttonState3 == HIGH) && (buttonState4 == HIGH) && (switchReset == true)) {\r\n screen.home();\r\n screen.print(\"Hi!Make sure you\");\r\n screen.setCursor(0,1);\r\n screen.print(\"have everything\");\r\n buzzerSound = false;\r\n switchReset = false;\r\n buzzerCount = 0;\r\n }\r\n}<\/pre>\n","protected":false},"excerpt":{"rendered":"This device reminds me to bring my things with me in the morning. If I have everything listed with me, a latch opens and my ID falls out…<\/p>\n","protected":false},"author":213,"featured_media":15506,"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\/s2022\/work\/wp-json\/wp\/v2\/posts\/15474"}],"collection":[{"href":"https:\/\/courses.ideate.cmu.edu\/60-223\/s2022\/work\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/courses.ideate.cmu.edu\/60-223\/s2022\/work\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/courses.ideate.cmu.edu\/60-223\/s2022\/work\/wp-json\/wp\/v2\/users\/213"}],"replies":[{"embeddable":true,"href":"https:\/\/courses.ideate.cmu.edu\/60-223\/s2022\/work\/wp-json\/wp\/v2\/comments?post=15474"}],"version-history":[{"count":5,"href":"https:\/\/courses.ideate.cmu.edu\/60-223\/s2022\/work\/wp-json\/wp\/v2\/posts\/15474\/revisions"}],"predecessor-version":[{"id":15621,"href":"https:\/\/courses.ideate.cmu.edu\/60-223\/s2022\/work\/wp-json\/wp\/v2\/posts\/15474\/revisions\/15621"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/courses.ideate.cmu.edu\/60-223\/s2022\/work\/wp-json\/wp\/v2\/media\/15506"}],"wp:attachment":[{"href":"https:\/\/courses.ideate.cmu.edu\/60-223\/s2022\/work\/wp-json\/wp\/v2\/media?parent=15474"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/courses.ideate.cmu.edu\/60-223\/s2022\/work\/wp-json\/wp\/v2\/categories?post=15474"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/courses.ideate.cmu.edu\/60-223\/s2022\/work\/wp-json\/wp\/v2\/tags?post=15474"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}