/* LiquidCrystal Library - Hello World Demonstrates the use a 16x2 LCD display. The LiquidCrystal library works with all LCD displays that are compatible with the Hitachi HD44780 driver. There are many of them out there, and you can usually tell them by the 16-pin interface. This sketch prints "Hello World!" to the LCD and shows the time. The circuit: * LCD RS pin to digital pin 12 * LCD Enable pin to digital pin 11 * LCD D4 pin to digital pin 5 * LCD D5 pin to digital pin 4 * LCD D6 pin to digital pin 3 * LCD D7 pin to digital pin 2 * LCD R/W pin to ground * LCD VSS pin to ground * LCD VCC pin to 5V * 10K resistor: * ends to +5V and ground * wiper to LCD VO pin (pin 3) Library originally added 18 Apr 2008 by David A. Mellis library modified 5 Jul 2009 by Limor Fried (http://www.ladyada.net) example added 9 Jul 2009 by Tom Igoe modified 22 Nov 2010 by Tom Igoe This example code is in the public domain. http://www.arduino.cc/en/Tutorial/LiquidCrystal */ // include library code: #include #include // initialize the library with the numbers of the interface pins LiquidCrystal lcd(12, 11, 5, 4, 3, 2); // set POT & button pins int potPin = 1; int buttonPin = 7; int buttonState = 0; // intialize variables int approvalRate; // create list of judges, determine its length, and index variable to cycle through them char* judgeList[] = {"Boss", "Colleagues", "Professors", "Grandmother", "Parent/Guardian", "Sibling", "Religious Deity", "Stranger", "Friends", "Classmates", "Landlord"}; int listSize = (sizeof(judgeList)/2) - 1; int judgeIndex; // set variable with just blanks to overwrite characters leftover by long strings String blank = " "; // create Servo Servo myservo; // create servo object to control a servo int servoAngle; // variable to store the servo position void setup() { Serial.begin(9600); // set up the LCD's number of columns and rows: lcd.begin(16, 2); pinMode(buttonPin, INPUT); myservo.attach(9); // attaches the servo on pin 9 to the servo object judgeIndex = 0; } void loop() { // cycle thorugh judges buttonState = digitalRead(buttonPin); if (buttonState == HIGH){ if (judgeIndex < listSize){ judgeIndex = judgeIndex + 1; Serial.print(sizeof(judgeList)); } else{ judgeIndex = 0; } delay(500); } // read potentiometer value (for level of approval buy judge) int potRaw = analogRead(potPin); // convert pot value to human-friendly 0 - 100% range approvalRate = map(potRaw, 2, 1020, 100, 0); // convert approval rate to servo angle servoAngle = map(approvalRate, 0, 100, 5, 90); myservo.write(servoAngle); // print to LCD screen lcd.setCursor(0, 0); lcd.print(judgeList[judgeIndex]); lcd.print(blank); lcd.setCursor(0, 1); lcd.print(approvalRate); lcd.print("% approval "); }