Counts 0-99 automatically with adjustable speed using a potentiometer.
int count = 0; // counter
int speedPin = A5; // potentiometer
int speedValue = 0; // void setup() {
//The individual segments of a 2 digit seven-segment display.
// 1 being the first digit 2 being the second digit
pinMode(2, OUTPUT); //A1
pinMode(3, OUTPUT); //B1
pinMode(4, OUTPUT); //C1
pinMode(5, OUTPUT); //D1
pinMode(6, OUTPUT); //E1
pinMode(7, OUTPUT); //F1
pinMode(8, OUTPUT); //G1
pinMode(9, OUTPUT); //B2
pinMode(10, OUTPUT); //C2
pinMode(11, OUTPUT); //D2
pinMode(12, OUTPUT); //E2
pinMode(13, OUTPUT); //F2
pinMode(A0, OUTPUT); //A2
pinMode(A1, OUTPUT); //G2}
void loop() {
speedValue = analogRead(speedPin);
digitalWrite(2, 1); //-------------
digitalWrite(3, 1);
digitalWrite(4, 1);
digitalWrite(5, 1); // Display 0 in ones place
digitalWrite(6, 1);
digitalWrite(7, 1);
digitalWrite(8, 0); //-------------
delay(speedValue);
digitalWrite(2, 0); //-------------
digitalWrite(3, 1);
digitalWrite(4, 1);
digitalWrite(5, 0); // Display 1 in ones place
digitalWrite(6, 0);
digitalWrite(7, 0);
digitalWrite(8, 0); //-------------
delay(speedValue);
digitalWrite(2, 1); //-------------
digitalWrite(3, 1);
digitalWrite(4, 0);
digitalWrite(5, 1); // Display 2 in ones place
digitalWrite(6, 1);
digitalWrite(7, 0);
digitalWrite(8, 1); //-------------
delay(speedValue);
digitalWrite(2, 1); //-------------
digitalWrite(3, 1);
digitalWrite(4, 1);
digitalWrite(5, 1); // Display 3 in ones place
digitalWrite(6, 0);
digitalWrite(7, 0);
digitalWrite(8, 1); //-------------
delay(speedValue);
digitalWrite(2, 0); //-------------
digitalWrite(3, 1);
digitalWrite(4, 1);
digitalWrite(5, 0); // Display 4 in ones place
digitalWrite(6, 0);
digitalWrite(7, 1);
digitalWrite(8, 1); //-------------
delay(speedValue);
digitalWrite(2, 1); //-------------
digitalWrite(3, 0);
digitalWrite(4, 1);
digitalWrite(5, 1); // Display 5 in ones place
digitalWrite(6, 0);
digitalWrite(7, 1);
digitalWrite(8, 1); //-------------
delay(speedValue);
digitalWrite(2, 1); //-------------
digitalWrite(3, 0);
digitalWrite(4, 1);
digitalWrite(5, 1); // Display 6 in ones place
digitalWrite(6, 1);
digitalWrite(7, 1);
digitalWrite(8, 1); //-------------
delay(speedValue);
digitalWrite(2, 1); //-------------
digitalWrite(3, 1);
digitalWrite(4, 1);
digitalWrite(5, 0); // Display 7 in ones place
digitalWrite(6, 0);
digitalWrite(7, 0);
digitalWrite(8, 0); //-------------
delay(speedValue);
digitalWrite(2, 1); //-------------
digitalWrite(3, 1);
digitalWrite(4, 1);
digitalWrite(5, 1); // Display 8 in ones place
digitalWrite(6, 1);
digitalWrite(7, 1);
digitalWrite(8, 1); //-------------
delay(speedValue);
digitalWrite(2, 1); //-------------
digitalWrite(3, 1);
digitalWrite(4, 1);
digitalWrite(5, 0); // Display 9 in ones place
digitalWrite(6, 0);
digitalWrite(7, 1);
digitalWrite(8, 1); //-------------
delay(speedValue);This keep count of the tens place.
count++;
if (count == 1){ // When count is 1 it displays 1 in tens place
digitalWrite(9, 1);
digitalWrite(10, 1);
}
if (count == 2){ // When count is 2 it displays 2 in tens place
digitalWrite(10, 0);
digitalWrite(A0, 1);
digitalWrite(A1, 1);
digitalWrite(12, 1);
digitalWrite(11, 1);
}
if (count == 3){ // When count is 3 it displays 3 in tens place
digitalWrite(10, 1);
digitalWrite(12, 0);
}
if (count == 4){ // When count is 4 it displays 4 in tens place
digitalWrite(A0, 0);
digitalWrite(11, 0);
digitalWrite(13, 1);
}
if (count == 5){ // When count is 5 it displays 5 in tens place
digitalWrite(9, 0);
digitalWrite(A0, 1);
digitalWrite(11, 1);
}
if (count == 6){ // When count is 6 it displays 6 in tens place
digitalWrite(12, 1);
}
if (count == 7){ // When count is 7 it displays 7 in tens place
digitalWrite(10, 1);
digitalWrite(13, 0);
digitalWrite(9, 1);
digitalWrite(A1, 0);
digitalWrite(12, 0);
digitalWrite(11, 0);
}
if (count == 8){ // When count is 8 it displays 8 in tens place
digitalWrite(A1, 1);
digitalWrite(12, 1);
digitalWrite(11, 1);
digitalWrite(13, 1);
digitalWrite(11, 1);
}
if (count == 9){ // When count is 9 it displays 9 in tens place
digitalWrite(12, 0);
digitalWrite(11, 0);
}
if (count == 10){ // When count is 10. tens place becomes blank
digitalWrite(9, 0);
digitalWrite(10, 0);
digitalWrite(11, 0);
digitalWrite(12, 0);
digitalWrite(13, 0);
digitalWrite(A0, 0);
digitalWrite(A1, 0);
count = 0; // Reset count back to 0
}}
Copyright (c) 2015 Michael Parson
This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. See the file COPYING included with this distribution for more information.