Here is my weekend project.
CODE:
/*
Small Office Message Board
By: Matthew Eccles
Created 18 OCT 2013
www.matteccles.me
Many times you are on the phone and someone walks up behind you and starts talking to you.
So with this sign you can avoid this by displaying a small message on your desk.
It also works as an AFK status message for your co-workers.
Supplies:
* 1ea Arduino Uno
* 1ea Seeed Prototype board
* 1ea 16x2 LCD
* 1ea Potentiometer
* 1ea Pushbutton
* 1ea 10K resistor
* 3ea 460 resistor
* 2ea LED 5mm
* 1ea LED 3mm
* 1ea 2.54mm header 1x40
* 1ea Solder board 2"x4"
* 1ea Project Enclosure 6"x4"x2"
Other Items:
* Solder Iron
* Hot Glue Gun
* Wires
Wired Up:
* Arduino Pin 2 to LCD Pin 14
* Arduino Pin 3 to LCD Pin 13
* Arduino Pin 4 to LCD Pin 12
* Arduino Pin 5 to LCD Pin 11
* Arduino Pin 8 to Pushbutton
* Arduino Pin 9 to LED (460 Ω Resistor)
* Arduino Pin 10 to LCD Pin 6
* Arduino Pin 11 to LCD Pin 5
* Arduino Pin 12 to LCD Pin 4
* Arduino Pin 13 to LCD Pin 2
* LCD Pin 1 to Ground
* LCD Pin 2 to Arduino Pin 13 -OR- 5V
* LCD Pin 3 to Potentiometer
* LCD Pin 4 Arduino Pin 12
* LCD Pin 5 Arduino Pin 11
* LCD Pin 6 Arduino Pin 10
* LCD Pin 7 N/A
* LCD Pin 8 N/A
* LCD Pin 9 N/A
* LCD Pin 10 N/A
* LCD Pin 11 Arduino Pin 5
* LCD Pin 12 Arduino Pin 4
* LCD Pin 13 Arduino Pin 3
* LCD Pin 14 Arduino Pin 2
* LCD Pin 15 5V
* LCD Pin 16 to Ground
*/
#include <LiquidCrystal.h>
LiquidCrystal lcd(12, 11, 10, 5, 4, 3, 2);
int backLight = 13; // Arduino pin 13 will control the backlight connected to pin 15 on the LCD
// Please note that I am not using the "backLight" as I have the LCD Pin 15 wired to 5V.
int buttonPin = 8; // Arduino pin 8 will sence the pushbutton being pressed
int led9Pin = 9; // Arduino Pin 9 will control the LED that tells you when the LCD is on an Even display count
int buttonPushCounter = 0; // This is the counter that counts the number of button presses
int buttonState = 0; // This is the current state of the button
int lastButtonState = 0; // This is the previous state of the button
boolean lastButton = LOW;
boolean currentButton = LOW;
boolean lcdChange = false;
long previousMillis9 = 0; // Part of the Clock for the LED9Pin
long randInterval9 = 0; // Part of the Clock for the LED9Pin
int led9State = LOW; //Sets the state of teh LED9Pin to Low (off)
void setup() {
pinMode(backLight, OUTPUT); // initialize the LCD backlight as an output
pinMode(buttonPin, INPUT); // initialize the button pin as a input
pinMode(led9Pin, OUTPUT); // initialize the LED as an output
Serial.begin(9600); // initialize serial communication
lcd.begin(16,2); // columns, rows. use 16,2 for a 16x2 LCD (if you have 16x4, change it to refect it)
Serial.begin(9600); // initialize serial communication:
}
void loop() {
unsigned long currentMillis = millis();
buttonState = digitalRead(buttonPin); // reads the pushbutton input pin
if (buttonState != lastButtonState) { // compares the buttonState to its previous state
if (buttonState == HIGH) { // if the state has changed, increment the counter
// if the current state is HIGH then the button went from off to on:
buttonPushCounter++;
Serial.println("on");
Serial.print("number of button pushes: ");
Serial.println(buttonPushCounter);
}
else {
// if the current state is LOW then the button went from on to off:
Serial.println("off");
}
}
if (buttonPushCounter == 0) {
digitalWrite(backLight, HIGH); // turn backlight on. Replace 'HIGH' with 'LOW' to turn it off.
digitalWrite(led9Pin, LOW);
lcd.clear(); // Start by clearing the screen of the last text.
lcd.setCursor(0,0); // sets the cursor to column 0, row 0 (the first row)
lcd.print("Matthew Eccles"); // change this text to whatever you like by replacing everything within the quotes.
lcd.setCursor(0,1); // set the cursor to (16,1):
lcd.print(">RACHpoint Admin"); // change this text to whatever you like by replacing everything within the quotes.
// if you have a 4 row LCD, uncomment these lines to write to the bottom rows and change the "lcd.begin()" statement above.
//lcd.setCursor(0,2); // sets the cursor to column 0, row 2
//lcd.print("Text for Row 3");
//lcd.setCursor(0,3); // sets the cursor to column 0, row 3
//lcd.print("Text for Row 3");
}
if (buttonPushCounter == 1) {
digitalWrite(backLight, HIGH); // turn backlight on. Replace 'HIGH' with 'LOW' to turn it off.
digitalWrite(led9Pin, LOW);
lcd.clear(); // Start by clearing the screen of the last text.
lcd.setCursor(0,0); // sets the cursor to column 0, row 0 (the first row)
lcd.print("PITTSBURGH"); // change this text to whatever you like by replacing everything within the quotes.
lcd.setCursor(0,1); // sets the cursor to column 0, row 1
lcd.print(" STEELERS");
}
if (buttonPushCounter == 2) {
digitalWrite(backLight, HIGH); // turn backlight on. Replace 'HIGH' with 'LOW' to turn it off.
lcd.clear(); // Start by clearing the screen of the last text.
lcd.setCursor(0,0); // sets the cursor to column 0, row 0 (the first row)
lcd.print("ON THE PHONE"); // change this text to whatever you like by replacing everything within the quotes.
lcd.setCursor(0,1); // sets the cursor to column 0, row 1
lcd.print(" PLEASE WAIT");
//This next Section can be removed if you don't need it. This serves as a reminder that you have a status that you either busy or AFK.
if(currentMillis - previousMillis9 > randInterval9) {
randInterval9 = random (100, 1000);
previousMillis9 = currentMillis;
if (led9State == LOW)
led9State = HIGH;
else
led9State = LOW;
digitalWrite(led9Pin, led9State);}
}
if (buttonPushCounter == 3) {
digitalWrite(backLight, HIGH); // turn backlight on. Replace 'HIGH' with 'LOW' to turn it off.
lcd.clear(); // Start by clearing the screen of the last text.
lcd.setCursor(0,0); // sets the cursor to column 0, row 0 (the first row)
lcd.print("ON THE PHONE, BE"); // change this text to whatever you like by replacing everything within the quotes.
lcd.setCursor(0,1); // sets the cursor to column 0, row 1
lcd.print("A FEW MINUTES");
//This next Section can be removed if you don't need it. This serves as a reminder that you have a status that you either busy or AFK.
if(currentMillis - previousMillis9 > randInterval9) {
randInterval9 = random (100, 1000);
previousMillis9 = currentMillis;
if (led9State == LOW)
led9State = HIGH;
else
led9State = LOW;
digitalWrite(led9Pin, led9State);}
}
if (buttonPushCounter == 4) {
digitalWrite(backLight, HIGH); // turn backlight on. Replace 'HIGH' with 'LOW' to turn it off.
lcd.clear(); // Start by clearing the screen of the last text.
lcd.setCursor(0,0); // sets the cursor to column 0, row 0 (the first row)
lcd.print(" GONE TO LUNCH"); // change this text to whatever you like by replacing everything within the quotes.
lcd.setCursor(0,1); // sets the cursor to column 0, row 1
lcd.print("BE BACK AT 11:30");
//This next Section can be removed if you don't need it. This serves as a reminder that you have a status that you either busy or AFK.
if(currentMillis - previousMillis9 > randInterval9) {
randInterval9 = random (100, 1000);
previousMillis9 = currentMillis;
if (led9State == LOW)
led9State = HIGH;
else
led9State = LOW;
digitalWrite(led9Pin, led9State);}
}
if (buttonPushCounter == 5) {
digitalWrite(backLight, HIGH); // turn backlight on. Replace 'HIGH' with 'LOW' to turn it off.
lcd.clear(); // Start by clearing the screen of the last text.
lcd.setCursor(0,0); // sets the cursor to column 0, row 0 (the first row)
lcd.print("Away From Desk"); // change this text to whatever you like by replacing everything within the quotes.
lcd.setCursor(0,1); // sets the cursor to column 0, row 1
lcd.print("Be Back Shortly");
//This next Section can be removed if you don't need it. This serves as a reminder that you have a status that you either busy or AFK.
if(currentMillis - previousMillis9 > randInterval9) {
randInterval9 = random (100, 1000);
previousMillis9 = currentMillis;
if (led9State == LOW)
led9State = HIGH;
else
led9State = LOW;
digitalWrite(led9Pin, led9State);}
}
if (buttonPushCounter == 6) {
digitalWrite(backLight, HIGH); // turn backlight on. Replace 'HIGH' with 'LOW' to turn it off.
lcd.clear(); // Start by clearing the screen of the last text.
lcd.setCursor(0,0); // sets the cursor to column 0, row 0 (the first row)
lcd.print("Away From Desk"); // change this text to whatever you like by replacing everything within the quotes.
lcd.setCursor(0,1); // sets the cursor to column 0, row 1
lcd.print("Send Me An Email");
//This next Section can be removed if you don't need it. This serves as a reminder that you have a status that you either busy or AFK.
if(currentMillis - previousMillis9 > randInterval9) {
randInterval9 = random (100, 1000);
previousMillis9 = currentMillis;
if (led9State == LOW)
led9State = HIGH;
else
led9State = LOW;
digitalWrite(led9Pin, led9State);}
}
if (buttonPushCounter == 7) {
digitalWrite(backLight, HIGH); // turn backlight on. Replace 'HIGH' with 'LOW' to turn it off.
lcd.clear(); // Start by clearing the screen of the last text.
lcd.setCursor(0,0); // sets the cursor to column 0, row 0 (the first row)
lcd.print("In Training"); // change this text to whatever you like by replacing everything within the quotes.
lcd.setCursor(0,1); // sets the cursor to column 0, row 1
lcd.print("Send Me An Email");
//This next Section can be removed if you don't need it. This serves as a reminder that you have a status that you either busy or AFK.
if(currentMillis - previousMillis9 > randInterval9) {
randInterval9 = random (100, 1000);
previousMillis9 = currentMillis;
if (led9State == LOW)
led9State = HIGH;
else
led9State = LOW;
digitalWrite(led9Pin, led9State);}
}
if (buttonPushCounter == 8) {
digitalWrite(backLight, HIGH); // turn backlight on. Replace 'HIGH' with 'LOW' to turn it off.
lcd.clear(); // Start by clearing the screen of the last text.
lcd.setCursor(0,0); // sets the cursor to column 0, row 0 (the first row)
lcd.print("Gov't Shutdown"); // change this text to whatever you like by replacing everything within the quotes.
lcd.setCursor(0,1); // sets the cursor to column 0, row 1
lcd.print("Furlough Friday!");
//This next Section can be removed if you don't need it. This serves as a reminder that you have a status that you either busy or AFK.
if(currentMillis - previousMillis9 > randInterval9) {
randInterval9 = random (10, 100);
previousMillis9 = currentMillis;
if (led9State == LOW)
led9State = HIGH;
else
led9State = LOW;
digitalWrite(led9Pin, led9State);}
}
if (buttonPushCounter >= 9) {
buttonPushCounter = 0;
}
lastButtonState = buttonState; // this saves the current state as the last state, for next time through the loop
// This delay can be made higher, but the high the number the more time you have to wait to press the button
// If there is no delay, you will see scree flicker as it clears the screen and loads to the text.
delay(120);
}
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