Finalized code

Here's the finalized code that contains an LCD screen, 2 potentiometers, and a button.



 

	// Code create by mark aruda for Mecanical Design Lab 1 at Umass Lowell
	// Code moves 2 servos, the first moves based on the potentiometer value,
	//the second servo moves between horizontal and vertical based on a pushbutton
	//button attatched to 1
	//potentiometer attatched to A3
	//Servo 1 attatched to 9
	//Servo 2 attatched to 10
	//LCD attatched to 12, 11, 5, 4, 3, 2 http://www.arduino.cc/en/Tutorial/LiquidCrystal
	//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
	#include <Servo.h> //includes servo library
	#include <LiquidCrystal.h>// include LCD display
	Servo servo1; //servo control object
	Servo servo2;
	LiquidCrystal lcd(12,11,5,4,3,2);//sets up the LCD display array to those pins
	const int buttonPin = 7; //labels button pin
	const int potpin = A3; //labels analog read pin for potentiometer
	int potposition; //creates value for potientiometer value
	int servo1position; //creates variable for servo position
	int servo1clockwiseSpeed = 100; //the speed to make the continuous servo go up
	int servo1counterclockwiseSpeed = 80; //the speed to make the continuous servo go down
	int servo1stop=90; //the adjusted servo position to make the servo stop
	boolean currentState = LOW; //used for debounce code
	boolean lastState = LOW;
	boolean stateChange = false;
	int currentButton = 0;// used for button count
	int lastButton = 1;
	// setup
	void setup() {
	lcd.begin(16,2); //to set the LCD to start with 16 coloums and 2 rows
	servo1.attach(9); //servo1 attached pin 9
	servo2.attach(10); //servo2 attached pin 10
	pinMode(buttonPin, INPUT); //makes the button pin an input
	lcd.clear();
	}
	// main loop
	void loop(){
	potposition= analogRead(potpin); //reads the potentiometer value and gives a value between 0-1023
	servo1position= map(potposition,0,1023,0,180); //maps the value from the potentiometer so it can work for a servo range
	//if the potentiometer is between 80 or 100 the servo will not move and it will print stopped on the LCD
	if ( servo1position >= 80 && servo1position <=100)
	{
	servo1.write(servo1stop);
	lcd.setCursor(0,0);
	lcd.print("Stopped ");
	}
	//if the potentiometer is greater than 100 it will move in the positive direction and write that on the screen
	if (servo1position > 100)
	{
	servo1.write(servo1clockwiseSpeed);
	lcd.setCursor(0,0);
	lcd.print("Going up ");
	}
	//if the potentiometer is less than 100 it will go down and write that on the LCD screen
	if (servo1position <80){
	servo1.write(servo1counterclockwiseSpeed);
	lcd.setCursor(0,0);
	lcd.print("Going down");
	}
	//look at various function descriptions
	currentState = debounceButton();
	stateChange = checkForChange(currentState, lastState);
	currentButton = getButtonNumber(lastButton, currentState, stateChange);
	indicatorLight(currentButton);
	lastState = currentState;
	lastButton = currentButton;
	}
	// function debounceButton to make sure the button is only pushed once
	boolean debounceButton()
	{
	boolean firstCheck = LOW;
	boolean secondCheck = LOW;
	boolean current = LOW;
	firstCheck = digitalRead(buttonPin);
	delay(50);
	if (firstCheck == secondCheck){
	current = firstCheck;
	}
	return current;
	}
	// function checkForChange this function makes sure there is a change in whether the button is pushed or not
	boolean checkForChange(boolean current, boolean last)
	{
	boolean change;
	if (current != last){
	change = true;
	}
	else {
	change = false;
	}
	return change;
	}
	// function getButtonNumber means that if there is a change then the button count goes up by 1 untill it reaches 1
	// then it goes back to 0
	int getButtonNumber(int button, boolean state, boolean change)
	{
	if (change == true && state == LOW){
	button++;
	if (button > 1){
	button = 0;
	}
	}
	return button;
	}
	// function indicatorLight this function will set the servo to 90 degrees or 0 degrees according to what button it is on
	void indicatorLight(int button) //function that acts according to the button number that the get button number function gives out
	{
	if (button==0) //if the button is 0 it makes the servo go to 90 degrees
	{
	servo2.write(20);
	lcd.setCursor(0,1);
	lcd.print("Lever up ");
	}
	if (button ==1) // if the button number is 1 it makes the servo go to 180 degrees
	{ // if the button number is 1 it makes the servo go to 180 degrees
	servo2.write(90);
	lcd.setCursor(0,1);
	lcd.print("Lever Down");
	}
	}

view raw gistfile1.txt hosted with ❤ by GitHub

The LCD screen is having some problems but it should be fine by tomorrows presentation.

Here's the wire diagram setup.

This was created using the Fritzing program.