hello
Need Help in programming Arduino Mega with 10 Bush buttons numbered from 1 to 10 and Screen LCD 2x16
When you press any push button appears its number on the screen with a beep sound
When you press on the more than bush button appears there numbers on the screen according to the sequence of pressed
There another bush button when pressed clears the screen and stop the beep sound
I want code to do that
thanks
assuming you have run out of pins to connect single buttons to you want to look at multiple buttons attached to a single pin..
look here for ideas 5 buttons on 1 pin
Mohammed_Azeez:
helloNeed Help in programming Arduino Mega with 10 Bush buttons numbered from 1 to 10 and Screen LCD 2x16
When you press any push button appears its number on the screen with a beep sound
When you press on the more than bush button appears there numbers on the screen according to the sequence of pressed
There another bush button when pressed clears the screen and stop the beep sound
I want code to do that
thanks
It would be easier for us to do your homework for you if you provided us with the original assignment sheet rather than a paraphrased version.
Don
filk thank you for help.
floresta This is not homework, but is part of a project in the hospital (the nurse call device)..thanks
Sorry about that but we get a lot of requests to do homework here.
The system proposed in the previous link (reply #1) will not be satisfactory since it cannot deal with simultaneous button presses.
Are you modifying/enhancing an existing call button system or are you creating an entirely new system?
What are the distances involved?
From my hospital experience I don't think a beep will attract any attention. You need a device that is quiet and annoying, perhaps something along the lines of a seat cushion that can deliver a shock.
I assume that you have read the disclaimer about using an Arduino in safety-critical applications.
Don
The program code is completed and remained one issue where I need your help,
It is when you press any push button switch more than once will be repeated appearance switch number on the screen.
I want to show switch number Once even that was compressed more than once.
Thanks
this sample of the
code:
#include <LiquidCrystal.h>
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
const int Buzerpin = 13; //buzzer
const int buttonPin = 6;
const int buttonPin2 = 7;
const int buttonPin3 = 8;
const int buttonPin4 = 9;
int buttonState = 0;
int buttonState2 = 0;
int buttonState3 = 0;
int buttonState4 = 0;
int lastButtonState = 0;
int lastButtonState2 = 0;
int lastButtonState3 = 0;
int lastButtonState4 = 0;
void setup() {
// set up the LCD's number of columns and rows:
lcd.begin(20, 4);
lcd.print("SAMAWA HOSPITAL");
delay(5000);
lcd.clear();
pinMode(buttonPin, INPUT);
pinMode(buttonPin2, INPUT);
pinMode(buttonPin3, INPUT);
pinMode(buttonPin4, INPUT);
pinMode(Buzerpin, OUTPUT);
Serial.begin(9600);
}
void loop() {
lcd.noDisplay();
delay(500);
// Turn on the display:
lcd.display();
delay(500);
buttonState = digitalRead(buttonPin);
if (buttonState != lastButtonState) {
if (buttonState == HIGH) {
digitalWrite(Buzerpin, HIGH);
lcd.print("R1");
}
}
lastButtonState = buttonState;
buttonState2 = digitalRead(buttonPin2);
if (buttonState2 != lastButtonState2) {
if (buttonState2 == HIGH) {
digitalWrite(Buzerpin, HIGH);
// Print a message to the LCD.
lcd.print("R2");
lcd.display();
}
}
lastButtonState2 = buttonState2;
buttonState3 = digitalRead(buttonPin3);
if (buttonState3 != lastButtonState3) {
if (buttonState3 == HIGH) {
digitalWrite(Buzerpin, HIGH);
lcd.print("R3");
lcd.display();
}
}
lastButtonState3 = buttonState3;
buttonState4 = digitalRead(buttonPin4);
if (buttonState4 != lastButtonState4) {
if (buttonState4 == HIGH) {
digitalWrite(Buzerpin, LOW);
lcd.clear();
}
}
}
Hi.
Please use code tags when posting code.
You can learn how to do that by reading the instructions on how to use the forum, which is available on top of any forum here.
It's not real difficult to have a number appearing only once.
If the number is displayed the first time, set a flag telling that it is already there.
If you are going to display the number, check that flag to see if it isn't already displayed.
The reset button could reset any flags, but you need to figure out if that is what you want.
Do you want to reset 3 calls, when handling the first call ?