Variable-Sided Digital Dice

1#include <Wire.h> 
2#include <LiquidCrystal_I2C.h>
3
4LiquidCrystal_I2C   LCD(0x27,20,4); 
5
6int button = A0; //A0 connected to push button
7int powerOut   = A2; //A0 set to a constant power output for pullup resistor
8int pot = A1; //A1   connected to potentiometer
9long randomNum = 0; //initialize random number to   0
10int generating = 0; //state for generating the random number
11int upperLimit   = 0; //upperlimit for die
12int potVal = 0; //initialize input from potentiometer
13int   state = 0;
14
15void setup()  
16{
17  Serial.begin(9600);  //set baude rate   to 9600 [standard communication rate for LCD screens]
18  pinMode(button, INPUT_PULLUP);   //use internal pullup resistor on button input pin
19  pinMode(powerOut, OUTPUT);   //set A2 to be a power output
20  pinMode(pot, INPUT); //set A1 to be input for   potentiometer
21  LCD.begin();//Initializing display
22  LCD.backlight();//To   Power ON the back light
23  delay(100); //pause for 100ms
24  LCD.clear(); //clear   screen
25  delay(200); //pause for 200ms
26  digitalWrite(powerOut, HIGH); //set   A2 to constantly output 5V
27}
28 
29void loop() // run over and over
30{
31   digitalWrite(powerOut, LOW); //set A2 to constantly output 0V
32  LCD.setCursor(0,0);
33   LCD.print("  DM BLAISE'S DIE  ");
34  state = digitalRead(button);
35  potVal   = analogRead(pot);
36  delay(10);
37  if (potVal < 25){ //if potentiometer value   is less than 25..
38    upperLimit = 3;  //set upper limit to 3 (random function   is upper limit exclusive so this correlates to a D2)
39  }
40  else if (potVal   < 50){
41    upperLimit = 5; //D4
42  }
43    else if (potVal < 75){
44    upperLimit   = 7; //D6
45  }
46    else if (potVal < 100){
47    upperLimit = 9; //D8
48   }
49    else if (potVal < 125){
50    upperLimit = 11; //D10
51  }
52      else   if (potVal < 150){
53    upperLimit = 13; //D12
54  }
55      else if (potVal   > 150){
56    upperLimit = 21; //D20
57  }
58  LCD.setCursor(9,1); //column 9,   second row down
59  LCD.print("D"); //print D
60  LCD.setCursor(10,1); //column   10, second row down
61  LCD.print(upperLimit-1); //subtract 1 to reveal actual   value
62  LCD.print("     "); //space to overright old data printed on screen
63   if (state == LOW){ //if the button has been pressed (0V connected to A0)
64    LCD.setCursor(0,0);   //set curser at first pixel
65    LCD.print("  DM BLAISE'S DIE  "); //center   text on top row
66    generating = 1; //state of loop is 1 
67    randomNum =   random(1, upperLimit); //generate a number between 1 and set value (upper value   EXCLUSIVE)
68    LCD.clear(); //clear screen
69    LCD.setCursor(9,1); //column   9, second row down
70    LCD.print("D"); //print "D" for Dice
71    LCD.setCursor(10,1);   //Column 10, second row down
72    LCD.print(upperLimit-1); //subtract one from   upperLimit to reveal the die number
73    LCD.print("     "); //space
74    LCD.setCursor(9,2);   //column 9, third row down
75    LCD.print(randomNum); //print the random number
76     delay(100); //delay 100ms to debounce the button
77    while (generating ==   1){ //stay in a loop until the button is released
78       if (digitalRead(button)   == HIGH) { //if button state returns to high
79       generating = 0; //set state   variable to 0
80       delay(100); //delay 100ms
81    }
82  }
83}
84}

1#include <Wire.h> 
2#include <LiquidCrystal_I2C.h>
3
4LiquidCrystal_I2C  LCD(0x27,20,4); 
5
6int button = A0; //A0 connected to push button
7int powerOut  = A2; //A0 set to a constant power output for pullup resistor
8int pot = A1; //A1  connected to potentiometer
9long randomNum = 0; //initialize random number to  0
10int generating = 0; //state for generating the random number
11int upperLimit  = 0; //upperlimit for die
12int potVal = 0; //initialize input from potentiometer
13int  state = 0;
14
15void setup()  
16{
17  Serial.begin(9600);  //set baude rate  to 9600 [standard communication rate for LCD screens]
18  pinMode(button, INPUT_PULLUP);  //use internal pullup resistor on button input pin
19  pinMode(powerOut, OUTPUT);  //set A2 to be a power output
20  pinMode(pot, INPUT); //set A1 to be input for  potentiometer
21  LCD.begin();//Initializing display
22  LCD.backlight();//To  Power ON the back light
23  delay(100); //pause for 100ms
24  LCD.clear(); //clear  screen
25  delay(200); //pause for 200ms
26  digitalWrite(powerOut, HIGH); //set  A2 to constantly output 5V
27}
28 
29void loop() // run over and over
30{
31  digitalWrite(powerOut, LOW); //set A2 to constantly output 0V
32  LCD.setCursor(0,0);
33  LCD.print("  DM BLAISE'S DIE  ");
34  state = digitalRead(button);
35  potVal  = analogRead(pot);
36  delay(10);
37  if (potVal < 25){ //if potentiometer value  is less than 25..
38    upperLimit = 3;  //set upper limit to 3 (random function  is upper limit exclusive so this correlates to a D2)
39  }
40  else if (potVal  < 50){
41    upperLimit = 5; //D4
42  }
43    else if (potVal < 75){
44    upperLimit  = 7; //D6
45  }
46    else if (potVal < 100){
47    upperLimit = 9; //D8
48  }
49    else if (potVal < 125){
50    upperLimit = 11; //D10
51  }
52      else  if (potVal < 150){
53    upperLimit = 13; //D12
54  }
55      else if (potVal  > 150){
56    upperLimit = 21; //D20
57  }
58  LCD.setCursor(9,1); //column 9,  second row down
59  LCD.print("D"); //print D
60  LCD.setCursor(10,1); //column  10, second row down
61  LCD.print(upperLimit-1); //subtract 1 to reveal actual  value
62  LCD.print("     "); //space to overright old data printed on screen
63  if (state == LOW){ //if the button has been pressed (0V connected to A0)
64    LCD.setCursor(0,0);  //set curser at first pixel
65    LCD.print("  DM BLAISE'S DIE  "); //center  text on top row
66    generating = 1; //state of loop is 1 
67    randomNum =  random(1, upperLimit); //generate a number between 1 and set value (upper value  EXCLUSIVE)
68    LCD.clear(); //clear screen
69    LCD.setCursor(9,1); //column  9, second row down
70    LCD.print("D"); //print "D" for Dice
71    LCD.setCursor(10,1);  //Column 10, second row down
72    LCD.print(upperLimit-1); //subtract one from  upperLimit to reveal the die number
73    LCD.print("     "); //space
74    LCD.setCursor(9,2);  //column 9, third row down
75    LCD.print(randomNum); //print the random number
76    delay(100); //delay 100ms to debounce the button
77    while (generating ==  1){ //stay in a loop until the button is released
78       if (digitalRead(button)  == HIGH) { //if button state returns to high
79       generating = 0; //set state  variable to 0
80       delay(100); //delay 100ms
81    }
82  }
83}
84}