Published July 2, 2020 © MIT

DIGITAL TOSSER (Using Arduino UNO)

Toss the coin digitally using digital tosser.

BeginnerFull instructions provided1 hour1,060

Things used in this project

Hardware components

Arduino UNO

Adafruit RGB Backlight LCD - 16x2

SparkFun Pushbutton switch 12mm

Jumper wires (generic)

Software apps and online services

Arduino IDE

Story

Now toss the coin digitally using digital tosser. Its built using Arduino UNO, LCD(2x16) and push button. When you like to choose heads the key should be pressed, for tails don't press the key.

HARDWARE SETUP

You can setup the circuit given in schematics.

Circuit done by me

SOFTWARE SETUP

It is necessary to include LiquidCrystal.h library in the arduino code. In the program I have called a random function which chooses 1 or 2. 1 for heads and 2 for tails. First condition is that when key is pressed and r=1, user has won, second condition is key not pressed and r=2, user has won. In the else part loosing condition is added that is user chooses heads and gets tails or user chooses tails and gets heads.

Code

Arduno code

#include <LiquidCrystal.h>
int contrast=75;//Set LCD contrast
const int buttonpin=8;
// initialize the library with the numbers of the interface pins
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);

void setup() {
  analogWrite(9, contrast);
  lcd.begin(16, 2);
  pinMode(buttonpin,INPUT);//Button pin as input
  lcd.setCursor(0,0);//Set cursor to column 0, line 0
  lcd.print("Lets start toss");
  delay(1000); 
}

void loop() {
  
int  buttonState=digitalRead(buttonpin);
  int r=random(1,3);//Random nuber generation between 1-3
  lcd.setCursor(0,0);// set the cursor to column 0, line 0
  lcd.print("For H press Key");//For Heads press key
  lcd.setCursor(0,1);
  lcd.print("Dont press for L");//For Tails don't press key
  delay(3000);
  lcd.clear();
  
  lcd.setCursor(0,1);
  if ((buttonState==HIGH)&&(r==1))//Button High and random number=1
  lcd.print("Heads,You won");
  else if((buttonState==LOW)&&(r==2))//Button Low and random number =2
  lcd.print("Tails,You won");
  else
  lcd.print("You lost");//Can be button High ,random number=2 or LOw and r=1
  delay(10000); 
  lcd.clear();
}